16. Refer to the exhibit. When considering the route map configuration for BGP, what is the result when inbound traffic is received with a source IP that matches ACL1?
- The incoming network traffic will go through the whole route map.
- The optional action is processed, and the route map completes.
- If the incoming network traffic does not match ACL2 and ACL3, it will be dropped.
- The optional action is processed, and route map continues to test with ACL2.
17. A company is deploying BGP multihoming to provide network connection redundancy for several branch sites. Which method can be used to avoid the branch transit routing situation?
- ensuring that no IGP session is running on branch site BGP routers
- designating a data center or a specific location to handle the transit traffic
- applying inbound BGP route policies so that only data packets from other branch sites can enter local networks
- applying outbound BGP route policies so that branch sites do not advertise routes learned from the WAN connection
18. A BGP routing policy has been created using route maps. The command
route-map TEST permit 10 is part of the configuration. What does the argument 10 indicate?
- It identifies the access list number to be used by the route map statement.
- It identifies the position of the route map in relation to other instances.
- It indicates the local preference to be set for routes that match the route map.
- It indicates the metric to be set for routes that match the route map.
- It specifies the route map to be used on autonomous system 10.
19. A network administrator is configuring an ACL to match networks for BGP route filtering. The administrator creates an ACE permit ip 10.0.128.0 0.0.63.0 255.255.255.0 0.0.0.0. Which network matches the ACE?
20. A network administrator is configuring a prefix list to match networks for BGP route filtering. Which network matches the prefix match specification 10.160.0.0/14 ge 22?
21. Refer to the exhibit. A network administrator is troubleshooting BGP configuration and wants to verify routes that carry the 100 AS in the AS_Path value. Which regular expression should the administrator use in the command show bgp ipv4 unicast regex regex-pattern?
- show bgp ipv4 unicast regex .100.
- show bgp ipv4 unicast regex $100
- show bgp ipv4 unicast regex 100_
- show bgp ipv4 unicast regex ^100^
22. What is the first attribute to be used in determining the best path when a BGP router has multiple paths for the same network prefix length?
- lowest MED
- local originated
- local preference
23. Refer to the exhibit. A network administrator is configuring BGP route filtering on R1. The router ID for R1 is configured with lookback address 192.168.1.1. Which three routes are allowed from the BGP neighbor router 10.12.1.2 to inject into the BGP table of R1? (Choose three.)
24. A network administrator is configuring a prefix list with the
ip prefix-list command. How does the IOS process the prefix list if the administrator does not specify a sequence number?
- It will present a prompt to ask the administrator to enter one.
- It will present an error message that indicates the entry fails.
- It automatically increments by 5 based on the highest sequence number.
- It automatically increments by 10 based on the highest sequence number.
1. IGMP snooping examines traffic at which OSI layer(s)?
- Layer 2
- Layer 3
- Layer 2 and Layer 3
- Layer 2, Layer 3, and Layer 4
2. An IPv6 enabled device sends a data packet with the destination address of FF02::1. What is the target of this packet?
- all IPv6 DHCP servers
- all IPv6 enabled nodes on the local link
- all IPv6 configured routers on the local link
- all IPv6 configured routers across the network
3. What is the hexadecimal representation of the first 24 bits of any multicast MAC address?
4. What is the IP address for the Cisco-RP-discovery multicast group?
5. Which IP address does the BSR mechanism use to send all BSR messages?
6. What is the default maximum response time for a general membership query message sent to the all-host group address 126.96.36.199 in an attached subnet?
- 5 seconds
- 8 seconds
- 10 seconds
- 12 seconds
7. Which version of IGMP supports Source Specific Multicast (SSM)?
8. What message type would a receiver in a multicast environment send in order to receive a specific multicast feed?
- IGMP include
- IGMP exclude
- IGMP join
- IGMP Version 2 specific query
9. What is a benefit of shared trees over source trees when comparing multicast distribution trees?
- Shared trees receive traffic from all sources that send traffic to the multicast group.
- They require fewer multicast entries.
- They can allow multiple sources in an IP multicast group.
- They can be pruned.
10. Which two statements describe IGMP? (Choose two.)
- IGMPv2 supports multicast source filtering.
- IGMPv3 provides support for SSM.
- Multicast flooding on a LAN segment can be mitigated by using IGMP snooping.
- An IGMPv2 router will only allow IGMPv2 hosts to execute a join request.
- IGMPv1 only supports queries sent to a predefined group.
11. Which two statements about Protocol Independent Multicast (PIM) are true? (Choose two.)
- PIM does not require an IGP protocol to be configured in the network.
- PIM should be configured only on the first and the last hop routers in the multicast tree.
- PIM should be configured on the device that hosts the source of the muticast traffic.
- PIM sparse mode is most useful when there are few senders, many receivers, and the volume of multicast traffic is high.
- PIM is a multicast routing protocol that makes packet-forwarding decisions independent of the unicast IP routing protocol that is running in the network.
- Three of the forwarding modes for PIM are PIM dense mode (PIM-DM), PIM sparse mode (PIMSM), and PIM sparse-dense mode.
12. For configuring IP multicast routing, what is the purpose of the global configuration mode command
ip pim send-rp-announce 10.1.1.1?
- enables IP multicast routing with router ID 10.1.1.1
- assigns the role of rendezvous point mapping agent to the router with IP address 10.1.1.1
- announces the candidacy of the router with IP address 10.1.1.1 as the rendezvous point for all multicast groups
- enables protocol independent multicast (PIM) with router ID 10.1.1.1
“Do I Know This Already?” Quiz Answers:
1. Which of the following transmission methods is multicast known for?
2. Which protocols are essential to multicast operation? (Choose two.)
- Open Shortest Path First (OSPF)
- Protocol Independent Multicast (PIM)
- Internet Group Management Protocol (IGMP)
- Auto-RP and BSR
3. Which of the following multicast address ranges match the administratively scoped block? (Choose two.)
- 188.8.131.52 to 184.108.40.206
- 220.127.116.11 to 18.104.22.168
- 22.214.171.124 to 126.96.36.199
4. The first 24 bits of a multicast MAC address always start with ______.
- none of the above
5. What does a host need to do to start receiving multicast traffic?
- Send an IGMP join
- Send an unsolicited membership report
- Send an unsolicited membership query
- Send an unsolicited group specific query
6. What is the main difference between IGMPv2 and IGMPv3?
- IGMPv3’s max response time is 10 seconds by default.
- IGMPv3 sends periodic IGMP membership queries.
- IGMPv3 introduced a new IGMP membership report with source filtering support.
- IGMPv3 can only work with SSM, while IGMPv2 can only work with PIM-SM/DM.
7. True or false: IGMPv3 was designed to work exclusively with SSM and is not backward compatible with PIM-SM.
8. How can you avoid flooding of multicast frames in a Layer 2 network?
- Disable unknown multicast flooding
- Enable multicast storm control
- Enable IGMP snooping
- Enable control plane policing
9. Which of the following best describe SPT and RPT? (Choose two.)
- RPT is a source tree where the rendezvous point is the root of the tree.
- SPT is a source tree where the source is the root of the tree.
- RPT is a shared tree where the rendezvous point is the root of the tree.
- SPT is a shared tree where the source is the root of the tree.
10. What does an LHR do after it receives an IGMP join from a receiver?
- It sends a PIM register message toward the RP.
- It sends a PIM join toward the RP.
- It sends a PIM register message toward the source.
- It sends a PIM join message toward the source.
11. What does an FHR do when an attached source becomes active and there are no interested receivers?
- It unicasts register messages to the RP and stops after a register stop from the RP.
- It unicasts encapsulated register messages to the RP and stops after a register stop from the RP.
- It waits for the RP to send register message indicating that there are interested receivers.
- It multicasts encapsulated register messages to the RP and stops after a register stop from the RP.
- It unicasts encapsulated register messages to the RP until there are interested receivers.
12. Which of the following is a group-to-RP mapping mechanism developed by Cisco?
- Static RP
- Phantom RP
13. True or false: When PIM is configured in dense mode, it is mandatory to choose one or more routers to operate as rendezvous points (RPs)