CCNA 2 v7

Modules 14 – 16: Routing Concepts and Configuration Exam Answers

1. A network administrator notices that a correctly entered static route is not in the routing table. What two router commands would an administrator use to determine if the exit interface was up and the next hop address is available? (Choose two.)

  • ping
  • show ip protocols
  • show ip interface brief
  • show ip route
  • tracert

2. A network administrator has entered the following command:

ip route 192.168.10.64 255.255.255.192 serial0/0/1

When the network administrator enters the command show ip route, the route is not in the routing table. What should the administrator do next?

  • Re-enter the command using the correct mask.
  • Verify that the serial 0/0/1 interface is active and available.
  • Verify that the 192.168.10.64 network is active within the network infrastructure.
  • Re-enter the command using a network number rather than a usable IP address.

3. What will a router do if it does not have a default route configured and a packet needs to be forwarded to a destination network that is not listed in the routing table?

  • forward it to another router
  • drop it
  • send it back to the source

4. What does the letter C mean next to an entry in the output of the show ip route command?

  • It identifies a network that is a static route.
  • It identifies a network that is learned through OSPF.
  • It identifies a network that is learned through EIGRP.
  • It identifies a network that is directly connected to the router.

5. Which value represents the “trustworthiness” of a route and is used to determine which route to install into the routing table when there are multiple routes toward the same destination?

  • routing protocol
  • outgoing interface
  • metric
  • administrative distance

6. Which packet-forwarding method does a router use to make switching decisions when it is using a forwarding information base and an adjacency table?

  • fast switching
  • Cisco Express Forwarding
  • process switching
  • flow process

7. Which type of route would typically be used on a border router so that devices inside the company could access the Internet?

  • static
  • default
  • summary
  • directly connected

8. What are two functions of a router? (Choose two.)

  • A router connects multiple IP networks.
  • It controls the flow of data via the use of Layer 2 addresses.
  • It determines the best path to send packets.
  • It provides segmentation at Layer 2.
  • It builds a routing table based on ARP requests.

9. When a router learns that multiple paths are available to a destination network from the same routing protocol, which factor is considered by a router to choose the best path to forward a packet?

  • the lowest metric
  • the order of paths on the routing table
  • the fastest bandwidth of exiting interfaces
  • the reliability value of the neighboring routers

10. Which two route source codes are automatically created within a routing table whenever a router interface is configured with an IP address and activated? (Choose two.)

  • C
  • O
  • L
  • S
  • D

11. The output of the show ip route command contains the following entry:

S 10.2.0.0 [1/0] via 172.16.2.2.

What value is indicated by the 1 in the [1/0] portion of the output?

  • metric
  • number of hops
  • administrative distance
  • interface ID through which the network can be reached

12. Which type of static route creates a gateway of last resort?

  • default static route
  • floating static route
  • standard static route
  • summary static route

13. What are two common types of static routes in routing tables? (Choose two)

  • a default static route
  • a built-in static route by IOS
  • a static route to a specific network
  • a static route shared between two neighboring routers
  • a static route converted from a route that is learned through a dynamic routing protocol

14. What are two reasons why an administrator might choose to use static routing rather than dynamic routing? (Choose two.)

  • Static routing is easier to maintain in large networks.
  • Static routing is more secure.
  • Static routing is more scalable.
  • Static routing uses less router processing and bandwidth.
  • Static routing does not require complete knowledge of the whole network.

15. What address and prefix length is used when configuring an IPv6 default static route?

  • ::/0
  • ::1/128
  • 0.0.0.0/0
  • FF02::1/8

16. A network administrator configures a router by the command ip route 0.0.0.0 0.0.0.0 209.165.200.226. What is the purpose of this command?

  • to forward all packets to the device with IP address 209.165.200.226
  • to add a dynamic route for the destination network 0.0.0.0 to the routing table
  • to forward packets destined for the network 0.0.0.0 to the device with IP address 209.165.200.226
  • to provide a route to forward packets for which there is no route in the routing table

17. Which type of static route that is configured on a router uses only the exit interface?

  • recursive static route
  • directly connected static route
  • fully specified static route
  • default static route

18. A network administrator uses the command ip route 172.18.0.0 255.255.0.0 S0/0/1 to configure a floating static route on a router. That route will function as a backup route to reach the EIGRP learned network 172.18.0.0/16. After this configuration, the EIGRP route is removed from the routing table even though EIGRP is still functioning properly. Why is the static route not functioning as intended?

  • The next hop neighbor IP address is not configured.
  • The administrative distance value is not high enough on the static route.
  • The destination network is incorrectly configured.
  • The network mask is incorrectly configured.

19. What type of static route is created when the next-hop IP address and exit interface are specified?

  • recursive static route
  • directly connected static route
  • fully specified static route
  • floating static route

20. What is the correct syntax of a floating static route?

  • ip route 209.165.200.228 255.255.255.248 serial 0/0/0
  • ip route 209.165.200.228 255.255.255.248 10.0.0.1 120
  • ip route 0.0.0.0 0.0.0.0 serial 0/0/0
  • ip route 172.16.0.0 255.248.0.0 10.0.0.1

21. Which static route statement shows a recursive IPv6 static route?

  • ipv6 route 0::/0 S0/0/0
  • ipv6 route 0::/0 S0/0/0 254
  • ipv6 route 2001:db8:cafe:1::/56 S0/0/0
  • ipv6 route 2001:db8:cafe:1::/56 2001:db8:1000:10::1
  • ipv6 route 2001:db8:cafe:1::/56 S0/0/0 2001:db8:1000:10::1

22. A network administrator is configuring a route to forward packets to a specific web server. What type of route should be configured by the administrator?

  • a host route
  • an OSPF route
  • an EIGRP route
  • a default route
  • a static route with an administrative distance higher than 1

23. Which command would create a valid IPv6 default route?

  • ipv6 route ::/0 fe80::1
  • ipv6 route 2001:db8:acad:1::/64 ::1
  • ipv6 route ::/0 2001:db8:acad:2::a
  • ipv6 route ::/128 2001:db8:acad:1::1

24. What is a characteristic of a default static route? ​

  • It backs up a route already discovered by a dynamic routing protocol.
  • It uses a single network address to send multiple static routes to one destination address.
  • It identifies the gateway IP address to which the router sends all IP packets for which it does not have a learned or static route.
  • It is configured with a higher administrative distance than is the original dynamic routing protocol.

25. What is the purpose of a floating static route?

  • It allows summarization of contiguous networks.
  • It allows an alternate connection to be used when the preferred link fails.
  • It is commonly used when a dynamic routing protocol is not being used.
  • It allows connectivity to remote destinations that are not contained in the routing table.

26. Which IPv6 static route would serve as a backup route to a dynamic route learned through OSPF?

  • Router1(config)# ipv6 route 2001:db8:acad:1::/32 2001:db8:acad:6::2 100
  • Router1(config)# ipv6 route 2001:db8:acad:1::/32 2001:db8:acad:6::100
  • Router1(config)# ipv6 route 2001:db8:acad:1::/32 2001:db8:acad:6::2 200
  • Router1(config)# ipv6 route 2001:db8:acad:1::/32 gigabitethernet0/0 2001:db8:acad:6::100 100

27. What command, or set of commands, would be used to determine if the following configuration on router HQ works as designed?

ip route 0.0.0.0 0.0.0.0 serial 0/0/0 10
ip route 0.0.0.0 0.0.0.0 serial 0/1/0

  • HQ(config)# interface serial 0/1/0
    HQ(config-if)# shutdown
    HQ(config-if)# end
    HQ# show ip route
  • HQ# traceroute 128.107.0.99
  • HQ# show ip interface brief
  • HQ# ping 128.107.0.99
    HQ# ping 64.100.0.5
  • HQ# show ip route

28. Which type of static route typically uses the distance parameter in the ip route global configuration command?

  • summary static route
  • default static route
  • floating static route
  • standard static route

29. Why would a floating static route be configured with an administrative distance that is higher than the administrative distance of a dynamic routing protocol that is running on the same router?

  • to be used as a backup route
  • to load-balance the traffic
  • to act as a gateway of last resort
  • to be the priority route in the routing table

30. What network address and subnet mask combination would be used to create a default static route that matches any IPv4 destination?

  • 0.0.0.0 0.0.0.0
  • 0.0.0.0 255.255.255.255
  • 255.255.255.255 255.255.255.255
  • 255.255.255.255 0.0.0.0

31. Which sequence correctly identifies the order of the steps that a router will perform when it receives a packet on an Ethernet interface?

  • The router examines the destination IP address.
    The router examines the destination MAC address.
    The router identifies the Ethernet Type field.
    The router de-encapsulates the Ethernet frame.
  • The router examines the destination MAC address.
    The router identifies the Ethernet Type field.
    The router de-encapsulates the Ethernet frame.
    The router examines the destination IP address.
  • The router examines the destination IP address.
    The router examines the destination MAC address.
    The router de-encapsulates the Ethernet frame.
    The router identifies the Ethernet Type field.
  • The router de-encapsulates the Ethernet frame.
    The router examines the destination MAC address.
    The router identifies the Ethernet Type field.
    The router examines the destination IP address.
  • The router examines the destination MAC address.
    The router identifies the Ethernet Type field.
    The router examines the destination IP address.
    The router de-encapsulates the Ethernet frame.

32. Which three IOS troubleshooting commands can help to isolate problems with a static route? (Choose three.)

  • show version
  • ping
  • tracert
  • show ip route
  • show ip interface brief
  • show arp

33. A network administrator has entered a static route to an Ethernet LAN that is connected to an adjacent router. However, the route is not shown in the routing table. Which command would the administrator use to verify that the exit interface is up?

  • show ip interface brief
  • show ip protocols
  • show ip route
  • tracert

34. A 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?

  • Change the routing metric for that route.
  • Nothing. The static route will go away on its own.
  • Change the administrative distance for that route.
  • Remove the route using the no ip route command.

35. Which statement describes the sequence of processes executed by a router when it receives a packet from a host to be delivered to a host on another network?

  • It receives the packet and forwards it directly to the destination host.
  • It de-encapsulates the packet, selects the appropriate path, and encapsulates the packet to forward it toward the destination host.
  • It de-encapsulates the packet and forwards it toward the destination host.
  • It selects the path and forwards it toward the destination host.

36. A network engineer issues the show cdp neighbor command on several network devices during the process of network documentation. What is the purpose of performing this command?

  • to obtain information about directly connected Cisco devices
  • to check the networks that are advertised by the neighboring routers
  • to verify the network addresses that are attached to the network devices
  • to check the connectivity of PCs that are connected to the network devices

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