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CCNA 2 v7 FINAL Exam Answers
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- Answered
- Review
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Question 1 of 173
1. Question
1 pointsRefer to the exhibit. What will router R1 do with a packet that has a destination IPv6 address of 2001:db8:cafe:5::1?Correct
Incorrect
Hint
The route ::/0 is the compressed form of the 0000:0000:0000:0000:0000:0000:0000:0000/0 default route. The default route is used if a more specific route is not found in the routing table. -
Question 2 of 173
2. Question
1 pointsRefer to the exhibit. Currently router R1 uses an EIGRP route learned from Branch2 to reach the 10.10.0.0/16 network. Which floating static route would create a backup route to the 10.10.0.0/16 network in the event that the link between R1 and Branch2 goes down?Correct
Incorrect
Hint
A floating static route needs to have an administrative distance that is greater than the administrative distance of the active route in the routing table. Router R1 is using an EIGRP route which has an administrative distance of 90 to reach the 10.10.0.0/16 network. To be a backup route the floating static route must have an administrative distance greater than 90 and have a next hop address corresponding to the serial interface IP address of Branch1. -
Question 3 of 173
3. Question
1 pointsRefer to the exhibit. R1 was configured with the static route command ip route 209.165.200.224 255.255.255.224 S0/0/0 and consequently users on network 172.16.0.0/16 are unable to reach resources on the Internet. How should this static route be changed to allow user traffic from the LAN to reach the Internet?Correct
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Hint
The static route on R1 has been incorrectly configured with the wrong destination network and mask. The correct destination network and mask is 0.0.0.0 0.0.0.0. -
Question 4 of 173
4. Question
1 pointsWhich option shows a correctly configured IPv4 default static route?Correct
Incorrect
Hint
The static route ip route 0.0.0.0 0.0.0.0 S0/0/0 is considered a default static route and will match all destination networks. -
Question 5 of 173
5. Question
1 pointsRefer to the exhibit. Which static route command can be entered on R1 to forward traffic to the LAN connected to R2?Correct
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Question 6 of 173
6. Question
1 pointsWhat is a method to launch a VLAN hopping attack?Correct
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Question 7 of 173
7. Question
1 pointsA cybersecurity analyst is using the macof tool to evaluate configurations of switches deployed in the backbone network of an organization. Which type of LAN attack is the analyst targeting during this evaluation?Correct
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Hint
Macof is a network attack tool and is mainly used to flood LAN switches with MAC addresses. -
Question 8 of 173
8. Question
1 pointsRefer to the exhibit. A network administrator is configuring a router as a DHCPv6 server. The administrator issues a show ipv6 dhcp pool command to verify the configuration. Which statement explains the reason that the number of active clients is 0?Correct
Incorrect
Hint
Under the stateless DHCPv6 configuration, indicated by the command ipv6 nd other-config-flag, the DHCPv6 server does not maintain the state information, because client IPv6 addresses are not managed by the DHCP server. Because the clients will configure their IPv6 addresses by combining the prefix/prefix-length and a self-generated interface ID, the ipv6 dhcp pool configuration does not need to specify the valid IPv6 address range. And because clients will use the link-local address of the router interface as the default gateway address, the default gateway address is not necessary. -
Question 9 of 173
9. Question
1 pointsRefer to the exhibit. A network administrator configured routers R1 and R2 as part of HSRP group 1. After the routers have been reloaded, a user on Host1 complained of lack of connectivity to the Internet The network administrator issued the show standby brief command on both routers to verify the HSRP operations. In addition, the administrator observed the ARP table on Host1. Which entry should be seen in the ARP table on Host1 in order to gain connectivity to the Internet?Correct
Incorrect
Hint
Hosts will send an ARP request to the default gateway which is the virtual IP address. ARP replies from the HSRP routers contain the virtual MAC address. The host ARP tables will contain a mapping of the virtual IP to the virtual MAC. – the IP address and the MAC address of R1 -
Question 10 of 173
10. Question
1 pointsMatch the forwarding characteristic to its type. (Not all options are used.)Correct
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Question 11 of 173
11. Question
1 pointsWhich statement is correct about how a Layer 2 switch determines how to forward frames?Correct
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Hint
Cut-through frame forwarding reads up to only the first 22 bytes of a frame, which excludes the frame check sequence and thus invalid frames may be forwarded. In addition to broadcast frames, frames with a destination MAC address that is not in the CAM are also flooded out all active ports. Unicast frames are not always forwarded. Received frames with a destination MAC address that is associated with the switch port on which it is received are not forwarded because the destination exists on the network segment connected to that port. -
Question 12 of 173
12. Question
1 pointsWhich statement describes a result after multiple Cisco LAN switches are interconnected?Correct
Incorrect
Hint
In Cisco LAN switches, the microsegmentation makes it possible for each port to represent a separate segment and thus each switch port represents a separate collision domain. This fact will not change when multiple switches are interconnected. However, LAN switches do not filter broadcast frames. A broadcast frame is flooded to all ports. Interconnected switches form one big broadcast domain. -
Question 13 of 173
13. Question
1 pointsMatch the link state to the interface and protocol status. (Not all options are used.)Correct
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Question 14 of 173
14. Question
1 pointsRefer to the exhibit. How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?Correct
Incorrect
Hint
When a switch powers on, the MAC address table is empty. The switch builds the MAC address table by examining the source MAC address of incoming frames. The switch forwards based on the destination MAC address found in the frame header. If a switch has no entries in the MAC address table or if the destination MAC address is not in the switch table, the switch will forward the frame out all ports except the port that brought the frame into the switch. -
Question 15 of 173
15. Question
1 pointsAn administrator is trying to remove configurations from a switch. After using the command erase startup-config and reloading the switch, the administrator finds that VLANs 10 and 100 still exist on the switch. Why were these VLANs not removed?Correct
Incorrect
Hint
Standard range VLANs (1-1005) are stored in a file that is called vlan.dat that is located in flash memory. Erasing the startup configuration and reloading a switch does not automatically remove these VLANs. The vlan.dat file must be manually deleted from flash memory and then the switch must be reloaded. -
Question 16 of 173
16. Question
1 pointsMatch the description to the correct VLAN type. (Not all options are used.)Correct
Incorrect
Hint
A data VLAN is configured to carry user-generated traffic. A default VLAN is the VLAN where all switch ports belong after the initial boot up of a switch loading the default configuration. A native VLAN is assigned to an 802.1Q trunk port, and untagged traffic is placed on it. A management VLAN is any VLAN that is configured to access the management capabilities of a switch. An IP address and subnet mask are assigned to it, allowing the switch to be managed via HTTP, Telnet, SSH, or SNMP. -
Question 17 of 173
17. Question
1 pointsRefer to the exhibit. A network administrator has connected two switches together using EtherChannel technology. If STP is running, what will be the end result?Correct
Incorrect
Hint
Cisco switches support two protocols for negotiating a channel between two switches: LACP and PAgP. PAgP is Cisco-proprietary. In the topology shown, the switches are connected to each other using redundant links. By default, STP is enabled on switch devices. STP will block redundant links to prevent loops. -
Question 18 of 173
18. Question
1 pointsWhat is a secure configuration option for remote access to a network device?Correct
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Question 19 of 173
19. Question
1 pointsWhich wireless encryption method is the most secure?Correct
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Question 20 of 173
20. Question
1 pointsAfter attaching four PCs to the switch ports, configuring the SSID and setting authentication properties for a small office network, a technician successfully tests the connectivity of all PCs that are connected to the switch and WLAN. A firewall is then configured on the device prior to connecting it to the Internet. What type of network device includes all of the described features?Correct
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Question 21 of 173
21. Question
1 pointsRefer to the exhibit. Which static route would an IT technician enter to create a backup route to the 172.16.1.0 network that is only used if the primary RIP learned route fails?Correct
Incorrect
Hint
A backup static route is called a floating static route. A floating static route has an administrative distance greater than the administrative distance of another static route or dynamic route. -
Question 22 of 173
22. Question
1 pointsRefer to the exhibit. Host A has sent a packet to host B. What will be the source MAC and IP addresses on the packet when it arrives at host B?Correct
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Hint
As a packet traverses the network, the Layer 2 addresses will change at every hop as the packet is de-encapsulated and re-encapsulated, but the Layer 3 addresses will remain the same. -
Question 23 of 173
23. Question
1 pointsRefer to the exhibit. In addition to static routes directing traffic to networks 10.10.0.0/16 and 10.20.0.0/16, Router HQ is also configured with the following command:ip route 0.0.0.0 0.0.0.0 serial 0/1/1
What is the purpose of this command?Correct
Incorrect
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Question 24 of 173
24. Question
1 pointsWhat protocol or technology disables redundant paths to eliminate Layer 2 loops?Correct
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Question 25 of 173
25. Question
1 pointsWhich two VTP modes allow for the creation, modification, and deletion of VLANs on the local switch? (Choose two.)Correct
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Question 26 of 173
26. Question
1 pointsRefer to the exhibit. Based on the exhibited configuration and output, why is VLAN 99 missing?Correct
Incorrect
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Question 27 of 173
27. Question
1 pointsWhich three steps should be taken before moving a Cisco switch to a new VTP management domain? (Choose three.)Correct
Incorrect
Hint
When adding a new switch to a VTP domain, it is critical to configure the switch with a new domain name, the correct VTP mode, VTP version number, and password. A switch with a higher revision number can propagate invalid VLANs and erase valid VLANs thus preventing connectivity for multiple devices on the valid VLANs. -
Question 28 of 173
28. Question
1 pointsA network administrator is preparing the implementation of Rapid PVST+ on a production network. How are the Rapid PVST+ link types determined on the switch interfaces?Correct
Incorrect
Hint
When Rapid PVST+ is being implemented, link types are automatically determined but can be specified manually. Link types can be either point-to-point, shared, or edge. -
Question 29 of 173
29. Question
1 pointsRefer to the exhibit. All the displayed switches are Cisco 2960 switches with the same default priority and operating at the same bandwidth. Which three ports will be STP designated ports? (Choose three.)Correct
Incorrect
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Question 30 of 173
30. Question
1 pointsHow will a router handle static routing differently if Cisco Express Forwarding is disabled?Correct
Incorrect
Hint
In most platforms running IOS 12.0 or later, Cisco Express Forwarding is enabled by default. Cisco Express Forwarding eliminates the need for the recursive lookup. If Cisco Express Forwarding is disabled, multiaccess network interfaces require fully specified static routes in order to avoid inconsistencies in their routing tables. Point-to-point interfaces do not have this problem, because multiple end points are not present. With or without Cisco Express Forwarding enabled, using an exit interface when configuring a static route is a viable option. -
Question 31 of 173
31. Question
1 pointsRefer to the exhibit. Which route was configured as a static route to a specific network using the next-hop address?Correct
Incorrect
Hint
The C in a routing table indicates an interface that is up and has an IP address assigned. The S in a routing table signifies that a route was installed using the ip route command. Two of the routing table entries shown are static routes to a specific destination (the 192.168.2.0 network). The entry that has the S denoting a static route and [1/0] was configured using the next-hop address. The other entry (S 192.168.2.0/24 is directly connected, Serial 0/0/0) is a static route configured using the exit interface. The entry with the 0.0.0.0 route is a default static route which is used to send packets to any destination network that is not specifically listed in the routing table. -
Question 32 of 173
32. Question
1 pointsCompared with dynamic routes, what are two advantages of using static routes on a router? (Choose two.)Correct
Incorrect
Hint
Static routes are manually configured on a router. Static routes are not automatically updated and must be manually reconfigured if the network topology changes. Thus static routing improves network security because it does not make route updates among neighboring routers. Static routes also improve resource efficiency by using less bandwidth, and no CPU cycles are used to calculate and communicate routes. -
Question 33 of 173
33. Question
1 pointsWhat is the IPv6 prefix that is used for link-local addresses?Correct
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Hint
The IPv6 link-local prefix is FE80::/10 and is used to create a link-local IPv6 address on an interface. -
Question 34 of 173
34. Question
1 pointsWhat is the effect of entering the spanning-tree portfast configuration command on a switch?Correct
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Question 35 of 173
35. Question
1 pointsWhich two statements are characteristics of routed ports on a multilayer switch? (Choose two.)Correct
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Question 36 of 173
36. Question
1 pointsSuccessful inter-VLAN routing has been operating on a network with multiple VLANs across multiple switches for some time. When an inter-switch trunk link fails and Spanning Tree Protocol brings up a backup trunk link, it is reported that hosts on two VLANs can access some, but not all the network resources that could be accessed previously. Hosts on all other VLANS do not have this problem. What is the most likely cause of this problem?Correct
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Question 37 of 173
37. Question
1 pointsWhich command will start the process to bundle two physical interfaces to create an EtherChannel group via LACP?Correct
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Question 38 of 173
38. Question
1 pointsWhat action takes place when a frame entering a switch has a multicast destination MAC address?Correct
Incorrect
Hint
If the destination MAC address is a broadcast or a multicast, the frame is also flooded out all ports except the incoming port. -
Question 39 of 173
39. Question
1 pointsA junior technician was adding a route to a LAN router. A traceroute to a device on the new network revealed a wrong path and unreachable status. What should be done or checked?Correct
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Question 40 of 173
40. Question
1 pointsSelect the three PAgP channel establishment modes. (Choose three.)Correct
Incorrect
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Question 41 of 173
41. Question
1 pointsA static route has been configured on a router. However, the destination network no longer exists. What should an administrator do to remove the static route from the routing table?Correct
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Hint
When the destination network specified in a static route does not exist anymore, the static route stays in the routing table until it is manually removed by using the no ip route command. -
Question 42 of 173
42. Question
1 pointsRefer to the exhibit. What can be concluded about the configuration shown on R1?Correct
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Question 43 of 173
43. Question
1 pointsMatch the step to each switch boot sequence description. (Not all options are used.)Correct
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Question 44 of 173
44. Question
1 pointsRefer to the exhibit. R1 has been configured as shown. However, PC1 is not able to receive an IPv4 address. What is the problem?Correct
Incorrect
Hint
The ip helper-address command has to be applied on interface Gi0/0. This command must be present on the interface of the LAN that contains the DHCPv4 client PC1 and must be directed to the correct DHCPv4 server. -
Question 45 of 173
45. Question
1 pointsWhat two default wireless router settings can affect network security? (Choose two.)Correct
Incorrect
Hint
Default settings on wireless routers often include broadcasting the SSID and using a well-known administrative password. Both of these pose a security risk to wireless networks. WEP encryption and MAC address filtering are not set by default. The automatic selection of the wireless channel poses no security risks. -
Question 46 of 173
46. Question
1 pointsWhat is the common term given to SNMP log messages that are generated by network devices and sent to the SNMP server?Correct
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Question 47 of 173
47. Question
1 pointsA network administrator is adding a new WLAN on a Cisco 3500 series WLC. Which tab should the administrator use to create a new VLAN interface to be used for the new WLAN?Correct
Incorrect
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Question 48 of 173
48. Question
1 pointsA network administrator is configuring a WLAN. Why would the administrator change the default DHCP IPv4 addresses on an AP?Correct
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Question 49 of 173
49. Question
1 pointsWhich two functions are performed by a WLC when using split media access control (MAC)? (Choose two.)Correct
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Question 50 of 173
50. Question
1 pointsOn what switch ports should BPDU guard be enabled to enhance STP stability?Correct
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Question 51 of 173
51. Question
1 pointsWhich network attack is mitigated by enabling BPDU guard?Correct
Incorrect
Hint
There are several recommended STP stability mechanisms to help mitigate STP manipulation attacks: PortFast – used to immediately bring an interface configured as an access or trunk port to the forwarding state from a blocking state. Applied to all end-user ports. BPDU guard – immediately error-disables a port that receives a BPDU. Applied to all end-user ports.The receipt of BPDUs may be part of an unauthorized attempt to add a switch to the network. Root guard – prevents a switch from becoming the root switch. Applied to all ports where the root switch should not be located. Loop guard – detects unidirectional links to prevent alternate or root ports from becoming designated ports. Applied to all ports that are or can become nondesignated. -
Question 52 of 173
52. Question
1 pointsWhy is DHCP snooping required when using the Dynamic ARP Inspection feature?Correct
Incorrect
Hint
DAI relies on DHCP snooping. DHCP snooping listens to DHCP message exchanges and builds a bindings database of valid tuples (MAC address, IP address, VLAN interface). When DAI is enabled, the switch drops ARP packet if the sender MAC address and sender IP address do not match an entry in the DHCP snooping bindings database. However, it can be overcome through static mappings. Static mappings are useful when hosts configure static IP addresses, DHCP snooping cannot be run, or other switches in the network do not run dynamic ARP inspection. A static mapping associates an IP address to a MAC address on a VLAN. -
Question 53 of 173
53. Question
1 pointsRefer to the exhibit. Router R1 has an OSPF neighbor relationship with the ISP router over the 192.168.0.32 network. The 192.168.0.36 network link should serve as a backup when the OSPF link goes down. The floating static route command ip route 0.0.0.0 0.0.0.0 S0/0/1 100 was issued on R1 and now traffic is using the backup link even when the OSPF link is up and functioning. Which change should be made to the static route command so that traffic will only use the OSPF link when it is up?Correct
Incorrect
Hint
The problem with the current floating static route is that the administrative distance is set too low. The administrative distance will need to be higher than that of OSPF, which is 110, so that the router will only use the OSPF link when it is up. -
Question 54 of 173
54. Question
1 pointsRefer to the exhibit. What is the metric to forward a data packet with the IPv6 destination address 2001:DB8:ACAD:E:240:BFF:FED4:9DD2?Correct
Incorrect
Hint
The IPv6 destination address 2001:DB8:ACAD:E:240:BFF:FED4:9DD2 belongs to the network of 2001:DB8:ACAD:E::/64. In the routing table, the route to forward the packet has Serial 0/0/1 as an exit interface and 2682112 as the cost. -
Question 55 of 173
55. Question
1 pointsA network administrator is configuring a new Cisco switch for remote management access. Which three items must be configured on the switch for the task? (Choose three.)Correct
Incorrect
Hint
To enable the remote management access, the Cisco switch must be configured with an IP address and a default gateway. In addition, vty lines must configured to enable either Telnet or SSH connections. A loopback address, default VLAN, and VTP domain configurations are not necessary for the purpose of remote switch management. -
Question 56 of 173
56. Question
1 pointsRefer to the exhibit. Which statement shown in the output allows router R1 to respond to stateless DHCPv6 requests?Correct
Incorrect
Hint
The interface command ipv6 nd other-config-flag allows RA messages to be sent on this interface, indicating that additional information is available from a stateless DHCPv6 server. -
Question 57 of 173
57. Question
1 pointsRefer to the exhibit. A Layer 3 switch routes for three VLANs and connects to a router for Internet connectivity. Which two configurations would be applied to the switch? (Choose two.)Correct
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Question 58 of 173
58. Question
1 pointsA technician is troubleshooting a slow WLAN and decides to use the split-the-traffic approach. Which two parameters would have to be configured to do this? (Choose two.)Correct
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Question 59 of 173
59. Question
1 pointsA company has just switched to a new ISP. The ISP has completed and checked the connection from its site to the company. However, employees at the company are not able to access the internet. What should be done or checked?Correct
Incorrect
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Question 60 of 173
60. Question
1 pointsWhich information does a switch use to populate the MAC address table?Correct
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Hint
To maintain the MAC address table, the switch uses the source MAC address of the incoming packets and the port that the packets enter. The destination address is used to select the outgoing port. -
Question 61 of 173
61. Question
1 pointsRefer to the exhibit. A network administrator is reviewing the configuration of switch S1. Which protocol has been implemented to group multiple physical ports into one logical link?Correct
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Question 62 of 173
62. Question
1 pointsWhich type of static route is configured with a greater administrative distance to provide a backup route to a route learned from a dynamic routing protocol?Correct
Incorrect
Hint
There are four basic types of static routes. Floating static routes are backup routes that are placed into the routing table if a primary route is lost. A summary static route aggregates several routes into one, reducing the of the routing table. Standard static routes are manually entered routes into the routing table. Default static routes create a gateway of last resort. -
Question 63 of 173
63. Question
1 pointsWhat action takes place when a frame entering a switch has a unicast destination MAC address appearing in the MAC address table?Correct
Incorrect
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Question 64 of 173
64. Question
1 pointsThe exhibit shows two PCs called PC A and PC B, two routes called R1 and R2, and two switches. PC A has the address 172.16.1.1/24 and is connected to a switch and into an interface on R1 that has the IP address 172.16.1.254. PC B has the address 172.16.2.1/24 and is connected to a switch that is connected to another interface on R1 with the IP address 172.16.2.254. The serial interface on R1 has the address 172.16.3.1 and is connected to the serial interface on R2 that has the address 172.16.3.2/24. R2 is connected to the internet cloud. Which command will create a static route on R2 in order to reach PC B?Correct
Incorrect
Hint
The correct syntax is: router(config)# ip route destination-network destination-mask {next-hop-ip-address | exit-interface} If the local exit interface instead of the next-hop IP address is used then the route will be displayed as a directly connected route instead of a static route in the routing table. Because the network to be reached is 172.16.2.0 and the next-hop IP address is 172.16.3.1, the command is R2(config)# ip route 172.16.2.0 255.255.255.0 172.16.3.1 -
Question 65 of 173
65. Question
1 pointsWhat protocol or technology allows data to transmit over redundant switch links?Correct
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Question 66 of 173
66. Question
1 pointsRefer to the exhibit. Which three hosts will receive ARP requests from host A, assuming that port Fa0/4 on both switches is configured to carry traffic for multiple VLANs? (Choose three.)Correct
Incorrect
Hint
ARP requests are sent out as broadcasts. That means the ARP request is sent only throughout a specific VLAN. VLAN 1 hosts will only hear ARP requests from hosts on VLAN 1. VLAN 2 hosts will only hear ARP requests from hosts on VLAN 2. -
Question 67 of 173
67. Question
1 pointsRefer to the exhibit. The network administrator configures both switches as displayed. However, host C is unable to ping host D and host E is unable to ping host F. What action should the administrator take to enable this communication?Correct
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Question 68 of 173
68. Question
1 pointsWhat is the effect of entering the shutdown configuration command on a switch?Correct
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Question 69 of 173
69. Question
1 pointsWhat would be the primary reason an attacker would launch a MAC address overflow attack?Correct
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Question 70 of 173
70. Question
1 pointsDuring the AAA process, when will authorization be implemented?Correct
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Hint
AAA authorization is implemented immediately after the user is authenticated against a specific AAA data source. -
Question 71 of 173
71. Question
1 pointsA company security policy requires that all MAC addressing be dynamically learned and added to both the MAC address table and the running configuration on each switch. Which port security configuration will accomplish this?Correct
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Hint
With sticky secure MAC addressing, the MAC addresses can be either dynamically learned or manually configured and then stored in the address table and added to the running configuration file. In contrast, dynamic secure MAC addressing provides for dynamically learned MAC addressing that is stored only in the address table. -
Question 72 of 173
72. Question
1 pointsWhich three Wi-Fi standards operate in the 2.4GHz range of frequencies? (Choose three.)Correct
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Hint
802.11b and 802.11g operate in the 2.4GHz range, and 802.11n can operate in either the 2.4GHz or the 5GHz range. 802.11a and 802.11ac operate only in the 5GHz range of frequencies. -
Question 73 of 173
73. Question
1 pointsTo obtain an overview of the spanning tree status of a switched network, a network engineer issues the show spanning-tree command on a switch. Which two items of information will this command display? (Choose two.)Correct
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Question 74 of 173
74. Question
1 pointsRefer to the exhibit. Which trunk link will not forward any traffic after the root bridge election process is complete?Correct
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Question 75 of 173
75. Question
1 pointsWhich method of IPv6 prefix assignment relies on the prefix contained in RA messages?Correct
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Question 76 of 173
76. Question
1 pointsWhich two protocols are used to provide server-based AAA authentication? (Choose two.)Correct
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Hint
Server-based AAA authentication uses an external TACACS or RADIUS authentication server to maintain a username and password database. When a client establishes a connection with an AAA enabled device, the device authenticates the client by querying the authentication servers. -
Question 77 of 173
77. Question
1 pointsA network administrator is configuring a WLAN. Why would the administrator disable the broadcast feature for the SSID?Correct
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Question 78 of 173
78. Question
1 pointsWhich mitigation technique would prevent rogue servers from providing false IP configuration parameters to clients?Correct
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Hint
Like Dynamic ARP Inspection (DAI), IP Source Guard (IPSG) needs to determine the validity of MAC-address-to-IP-address bindings. To do this IPSG uses the bindings database built by DHCP snooping. -
Question 79 of 173
79. Question
1 pointsA network administrator configures the port security feature on a switch. The security policy specifies that each access port should allow up to two MAC addresses. When the maximum number of MAC addresses is reached, a frame with the unknown source MAC address is dropped and a notification is sent to the syslog server. Which security violation mode should be configured for each access port?Correct
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Question 80 of 173
80. Question
1 pointsWhat protocol or technology defines a group of routers, one of them defined as active and another one as standby?Correct
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Question 81 of 173
81. Question
1 pointsRefer to the exhibit. After attempting to enter the configuration that is shown in router RTA, an administrator receives an error and users on VLAN 20 report that they are unable to reach users on VLAN 30. What is causing the problem?Correct
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Question 82 of 173
82. Question
1 pointsWhich three pairs of trunking modes will establish a functional trunk link between two Cisco switches? (Choose three.)Correct
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Question 83 of 173
83. Question
1 pointsA technician is configuring a router for a small company with multiple WLANs and doesn’t need the complexity of a dynamic routing protocol. What should be done or checked?Correct
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Question 84 of 173
84. Question
1 pointsA company is deploying a wireless network in the distribution facility in a Boston suburb. The warehouse is quite large and it requires multiple access points to be used. Because some of the company devices still operate at 2.4GHz, the network administrator decides to deploy the 802.11g standard. Which channel assignments on the multiple access points will make sure that the wireless channels are not overlapping?Correct
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Hint
In the North America domain, 11 channels are allowed for 2.4GHz wireless networking. Among these 11 channels, the combination of channels 1, 6, and 11 are the only non-overlapping channel combination. -
Question 85 of 173
85. Question
1 pointsA network administrator of a small advertising company is configuring WLAN security by using the WPA2 PSK method. Which credential do office users need in order to connect their laptops to the WLAN?Correct
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Hint
When a WLAN is configured with WPA2 PSK, wireless users must know the pre-shared key to associate and authenticate with the AP. -
Question 86 of 173
86. Question
1 pointsRefer to the exhibit. What are the possible port roles for ports A, B, C, and D in this RSTP-enabled network?Correct
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Hint
Because S1 is the root bridge, B is a designated port, and C and D root ports. RSTP supports a new port type, alternate port in discarding state, that can be port A in this scenario. -
Question 87 of 173
87. Question
1 pointsRefer to the exhibit. Which static route would an IT technician enter to create a backup route to the 172.16.1.0 network that is only used if the primary RIP learned route fails?Correct
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Hint
A backup static route is called a floating static route. A floating static route has an administrative distance greater than the administrative distance of another static route or dynamic route. -
Question 88 of 173
88. Question
1 pointsWhat mitigation plan is best for thwarting a DoS attack that is creating a MAC address table overflow?Correct
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Hint
A MAC address (CAM) table overflow attack, buffer overflow, and MAC address spoofing can all be mitigated by configuring port security. A network administrator would typically not want to disable STP because it prevents Layer 2 loops. DTP is disabled to prevent VLAN hopping. Placing unused ports in an unused VLAN prevents unauthorized wired connectivity. -
Question 89 of 173
89. Question
1 pointsA network engineer is troubleshooting a newly deployed wireless network that is using the latest 802.11 standards. When users access high bandwidth services such as streaming video, the wireless network performance is poor. To improve performance the network engineer decides to configure a 5 Ghz frequency band SSID and train users to use that SSID for streaming media services. Why might this solution improve the wireless network performance for that type of service?Correct
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Hint
Wireless range is determined by the access point antenna and output power, not the frequency band that is used. In this scenario it is stated that all users have wireless NICs that comply with the latest standard, and so all can access the 5 GHz band. Although some users may find it inconvenient to switch to the 5 Ghz band to access streaming services, it is the greater number of channels, not just fewer users, that will improve network performance. -
Question 90 of 173
90. Question
1 pointsWhich DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server?Correct
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Hint
When a DHCP client receives DHCPOFFER messages, it will send a broadcast DHCPREQUEST message for two purposes. First, it indicates to the offering DHCP server that it would like to accept the offer and bind the IP address. Second, it notifies any other responding DHCP servers that their offers are declined. -
Question 91 of 173
91. Question
1 pointsRefer to the exhibit. Which destination MAC address is used when frames are sent from the workstation to the default gateway?Correct
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Hint
The IP address of the virtual router acts as the default gateway for all the workstations. Therefore, the MAC address that is returned by the Address Resolution Protocol to the workstation will be the MAC address of the virtual router. -
Question 92 of 173
92. Question
1 pointsAfter a host has generated an IPv6 address by using the DHCPv6 or SLAAC process, how does the host verify that the address is unique and therefore usable?Correct
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Hint
Before a host can actually configure and use an IPv6 address learned through SLAAC or DHCP, the host must verify that no other host is already using that address. To verify that the address is indeed unique, the host sends an ICMPv6 neighbor solicitation to the address. If no neighbor advertisement is returned, the host considers the address to be unique and configures it on the interface. -
Question 93 of 173
93. Question
1 pointsMatch the purpose with its DHCP message type. (Not all options are used.)Correct
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Question 94 of 173
94. Question
1 pointsWhich protocol adds security to remote connections?Correct
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Hint
SSH allows a technician to securely connect to a remote network device for monitoring and troubleshooting. HTTP establishes web page requests. FTP manages file transfer. NetBEUI is not routed on the Internet. POP downloads email messages from email servers. -
Question 95 of 173
95. Question
1 pointsRefer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?Correct
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Question 96 of 173
96. Question
1 pointsRefer to the exhibit. A network administrator is configuring inter-VLAN routing on a network. For now, only one VLAN is being used, but more will be added soon. What is the missing parameter that is shown as the highlighted question mark in the graphic?Correct
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Question 97 of 173
97. Question
1 pointsMatch each DHCP message type with its description. (Not all options are used.)Correct
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Question 98 of 173
98. Question
1 pointsWhat network attack seeks to create a DoS for clients by preventing them from being able to obtain a DHCP lease?Correct
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Hint
DCHP starvation attacks are launched by an attacker with the intent to create a DoS for DHCP clients. To accomplish this goal, the attacker uses a tool that sends many DHCPDISCOVER messages in order to lease the entire pool of available IP addresses, thus denying them to legitimate hosts. -
Question 99 of 173
99. Question
1 pointsRefer to the exhibit. If the IP addresses of the default gateway router and the DNS server are correct, what is the configuration problem?Correct
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Hint
In this configuration, the excluded address list should include the address that is assigned to the default gateway router. So the command should be ip dhcp excluded-address 192.168.10.1 192.168.10.9. -
Question 100 of 173
100. Question
1 pointsRefer to the exhibit. A network administrator has added a new subnet to the network and needs hosts on that subnet to receive IPv4 addresses from the DHCPv4 server. What two commands will allow hosts on the new subnet to receive addresses from the DHCP4 server? (Choose two.)Correct
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Hint
You need the router interface that is connected to the new subnet and the dhcp server address. The ip helper-address command is used to configure a router to be a DHCPv4 relay. The command should be placed on the interface facing the DHCPv4 clients. When the command is applied on the router interface, the interface will receive DHCPv4 broadcast messages and forward them as unicast to the IP address of the DHCPv4 server. -
Question 101 of 173
101. Question
1 pointsWhat protocol or technology uses source IP to destination IP as a load-balancing mechanism?Correct
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Question 102 of 173
102. Question
1 pointsWhat protocol should be disabled to help mitigate VLAN attacks?Correct
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Question 103 of 173
103. Question
1 pointsWhat protocol or technology requires switches to be in server mode or client mode?Correct
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Question 104 of 173
104. Question
1 pointsWhat are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)Correct
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Hint
A switch has the ability of creating temporary point-to-point connections between the directly-attached transmitting and receiving network devices. The two devices have full-bandwidth full-duplex connectivity during the transmission. -
Question 105 of 173
105. Question
1 pointsWhat command will enable a router to begin sending messages that allow it to configure a link-local address without using an IPv6 DHCP server?Correct
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Hint
To enable IPv6 on a router you must use the ipv6 unicast-routing global configuration command or use the ipv6 enable interface configuration command. This is equivalent to entering ip routing to enable IPv4 routing on a router when it has been turned off. Keep in mind that IPv4 is enabled on a router by default. IPv6 is not enabled by default. -
Question 106 of 173
106. Question
1 pointsA network administrator is using the router-on-a-stick model to configure a switch and a router for inter-VLAN routing. What configuration should be made on the switch port that connects to the router?Correct
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Hint
The port on the switch that connects to the router interface should be configured as a trunk port. Once it becomes a trunk port, it does not belong to any particular VLAN and will forward traffic from various VLANs. -
Question 107 of 173
107. Question
1 pointsWhat are three techniques for mitigating VLAN attacks? (Choose three.)Correct
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Hint
Mitigating a VLAN attack can be done by disabling Dynamic Trunking Protocol (DTP), manually setting ports to trunking mode, and by setting the native VLAN of trunk links to VLANs not in use. -
Question 108 of 173
108. Question
1 pointsMatch the DHCP message types to the order of the DHCPv4 process. (Not all options are used.)Correct
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Hint
The broadcast DHCPDISCOVER message finds DHCPv4 servers on the network. When the DHCPv4 server receives a DHCPDISCOVER message, it reserves an available IPv4 address to lease to the client and sends the unicast DHCPOFFER message to the requesting client. When the client receives the DHCPOFFER from the server, it sends back a DHCPREQUEST. On receiving the DHCPREQUEST message the server replies with a unicast DHCPACK message. DHCPREPLY and DHCPINFORMATION-REQUEST are DHCPv6 messages. -
Question 109 of 173
109. Question
1 pointsIn which situation would a technician use the show interfaces switch command?Correct
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Hint
The show interfaces command is useful to detect media errors, to see if packets are being sent and received, and to determine if any runts, giants, CRCs, interface resets, or other errors have occurred. Problems with reachability to a remote network would likely be caused by a misconfigured default gateway or other routing issue, not a switch issue. The show mac address-table command shows the MAC address of a directly attached device. -
Question 110 of 173
110. Question
1 pointsWhat is a drawback of the local database method of securing device access that can be solved by using AAA with centralized servers?Correct
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Hint
The local database method of securing device access utilizes usernames and passwords that are configured locally on the router. This allows administrators to keep track of who logged in to the device and when. The passwords can also be encrypted in the configuration. However, the account information must be configured on each device where that account should have access, making this solution very difficult to scale. -
Question 111 of 173
111. Question
1 pointsWhat action does a DHCPv4 client take if it receives more than one DHCPOFFER from multiple DHCP servers?Correct
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Question 112 of 173
112. Question
1 pointsRefer to the exhibit. The network administrator is configuring the port security feature on switch SWC. The administrator issued the command show port-security interface fa 0/2 to verify the configuration. What can be concluded from the output that is shown? (Choose three.)Correct
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Hint
Because the security violation count is at 0, no violation has occurred. The system shows that 3 MAC addresses are allowed on port fa0/2, but only one has been configured and no sticky MAC addresses have been learned. The port is up because of the port status of secure-up. The violation mode is what happens when an unauthorized device is attached to the port. A port must be in access mode in order to activate and use port security. -
Question 113 of 173
113. Question
1 pointsWhat method of wireless authentication is dependent on a RADIUS authentication server?Correct
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Question 114 of 173
114. Question
1 pointsA network administrator has found a user sending a double-tagged 802.1Q frame to a switch. What is the best solution to prevent this type of attack?Correct
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Question 115 of 173
115. Question
1 pointsRefer to the exhibit. Which two conclusions can be drawn from the output? (Choose two.)Correct
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Question 116 of 173
116. Question
1 pointsMatch the step number to the sequence of stages that occur during the HSRP failover process. (Not all options are used.)Correct
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Hint
Hot Standby Router Protocol (HSRP) is a Cisco-proprietary protocol that is designed to allow for transparent failover of a first-hop IPv4 device. -
Question 117 of 173
117. Question
1 pointsOn a Cisco 3504 WLC Summary page ( Advanced > Summary ), which tab allows a network administrator to configure a particular WLAN with a WPA2 policy?Correct
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Hint
The WLANs tab in the Cisco 3504 WLC advanced Summary page allows a user to access the configuration of WLANs including security, QoS, and policy-mapping. -
Question 118 of 173
118. Question
1 pointsRefer to the exhibit. A network engineer is configuring IPv6 routing on the network. Which command issued on router HQ will configure a default route to the Internet to forward packets to an IPv6 destination network that is not listed in the routing table?Correct
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Question 119 of 173
119. Question
1 pointsUsers are complaining of sporadic access to the internet every afternoon. What should be done or checked?Correct
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Question 120 of 173
120. Question
1 pointsWhat action takes place when the source MAC address of a frame entering a switch appears in the MAC address table associated with a different port?Correct
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Question 121 of 173
121. Question
1 pointsA network administrator is configuring a WLAN. Why would the administrator use a WLAN controller?Correct
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Question 122 of 173
122. Question
1 pointsA new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)Correct
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Hint
Explanation: Steps to configure Layer 3 switch to route with a router: Step 1. Configure the routed port. Step 2. Enable routing. Step 3. Configure routing. Step 4. Verify routing. Step 5. Verify connectivity. Reference: 4.3.8 Packet Tracer Configure Layer 3 Switching and inter VLAN Routing -
Question 123 of 173
123. Question
1 pointsWhich three statements accurately describe duplex and speed settings on Cisco 2960 switches? (Choose three.)Correct
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Question 124 of 173
124. Question
1 pointsRefer to the exhibit. A network administrator configures R1 for inter-VLAN routing between VLAN 10 and VLAN 20. However, the devices in VLAN 10 and VLAN 20 cannot communicate. Based on the configuration in the exhibit, what is a possible cause for the problem?Correct
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Question 125 of 173
125. Question
1 pointsA network administrator uses the spanning-tree portfast bpduguard default global configuration command to enable BPDU guard on a switch. However, BPDU guard is not activated on all access ports. What is the cause of the issue?Correct
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Question 126 of 173
126. Question
1 pointsWhich two types of spanning tree protocols can cause suboptimal traffic flows because they assume only one spanning-tree instance for the entire bridged network? (Choose two.)Correct
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Question 127 of 173
127. Question
1 pointsRefer to the exhibit. A network administrator is configuring the router R1 for IPv6 address assignment. Based on the partial configuration, which IPv6 global unicast address assignment scheme does the administrator intend to implement?Correct
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Question 128 of 173
128. Question
1 pointsA WLAN engineer deploys a WLC and five wireless APs using the CAPWAP protocol with the DTLS feature to secure the control plane of the network devices. While testing the wireless network, the WLAN engineer notices that data traffic is being exchanged between the WLC and the APs in plain-text and is not being encrypted. What is the most likely reason for this?Correct
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Hint
DTLS is a protocol which provides security between the AP and the WLC. It allows them to communicate using encryption and prevents eavesdropping or tampering. DTLS is enabled by default to secure the CAPWAP control channel but is disabled by default for the data channel. All CAPWAP management and control traffic exchanged between an AP and WLC is encrypted and secured by default to provide control plane privacy and prevent Man-In-the-Middle (MITM) attacks. -
Question 129 of 173
129. Question
1 pointsA new switch is to be added to an existing network in a remote office. The network administrator does not want the technicians in the remote office to be able to add new VLANs to the switch, but the switch should receive VLAN updates from the VTP domain. Which two steps must be performed to configure VTP on the new switch to meet these conditions? (Choose two.)Correct
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Hint
Before the switch is put in the correct VTP domain and in client mode, the switch must be connected to any other switch in the VTP domain through a trunk in order to receive/transmit VTP information. -
Question 130 of 173
130. Question
1 pointsRefer to the exhibit. Consider that the main power has just been restored. PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?Correct
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Question 131 of 173
131. Question
1 pointsWhat action takes place when the source MAC address of a frame entering a switch is not in the MAC address table?Correct
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Question 132 of 173
132. Question
1 pointsEmployees are unable to connect to servers on one of the internal networks. What should be done or checked?Correct