Module 3.3.3 Network Layer Quiz Answers
Network Addressing and Basic Troubleshooting – Module 3.3.3 Network Layer Quiz Answers
1. A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?
- The cable is not connected properly to the NIC.
- The computer has an invalid IP address.
- The computer has an incorrect subnet mask.
- The computer has an invalid default gateway address.
2. What information does the loopback test provide?
- The TCP/IP stack on the device is working correctly.
- The device has end-to-end connectivity.
- DHCP is working correctly.
- The Ethernet cable is working correctly.
- The device has the correct IP address on the network.
3. Which two commands can be used on a Windows host to display the routing table? (Choose two.)
- netstat -s
- route print
- show ip route
- netstat -r
4. During the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?
- discard the traffic after consulting the route table
- look up the next-hop address for the packet
- switch the packet to the directly connected interface
- analyze the destination IP address
5. A router receives a packet from the Gigabit 0/0 interface and determines that the packet needs to be forwarded out the Gigabit 0/1 interface. What will the router do next?
- route the packet out the Gigabit 0/1 interface
- create a new Layer 2 Ethernet frame to be sent to the destination
- look into the ARP cache to determine the destination IP address
- look into the routing table to determine if the destination network is in the routing table
6. What type of route is indicated by the code C in an IPv4 routing table on a Cisco router?
- static route
- default route
- directly connected route
- dynamic route that is learned through EIGRP
7. When a router receives a packet, what information must be examined in order for the packet to be forwarded to a remote destination?
- destination MAC address
- source IP address
- destination IP address
- source MAC address
8. What type of route is created when a network administrator manually configures a route that has an active exit interface?
- directly connected
9. If a company has decided not to use static routing for the four routers inside the company, what would be an alternative solution?
- Use DHCP.
- Install a routing protocol.
- Use automatic flow labels.
- Allow the internet provider to do the routing.
10. Which two statements describe features of an IPv4 routing table on a router? (Choose two.)
- The netstat -r command can be used to display the routing table of a router.
- Directly connected interfaces will have two route source codes in the routing table: C and S.
- The routing table stores information about routes derived from the active router interfaces.
- If a default static route is configured in the router, an entry will be included in the routing table with source code S.
- The routing table lists the MAC addresses of each active interface.
11. A router is receiving a stream of incoming packets that does not contain a route to the remote destination network. What configuration can a network administrator issue in order to successfully forward the incoming packets?
- Add a default route.
- Enable a dynamic routing protocol.
- Share the routing table with the hosts on the local network.
- Change the IP address of the ingress interface to match the targeted destination network.
12. Which address should be configured as the default gateway address of a client device?
- the Layer 2 address of the switch management interface
- the Layer 2 address of the switch port that is connected to the workstation
- the IPv4 address of the router interface that is connected to the same LAN
- the IPv4 address of the router interface that is connected to the internet