14.4.13 Check Your Understanding – IP Routing Table Answers

1. Which routing table principle is not correct?

  • Every router makes its decision alone, based on the information it has in its own routing table.
  • The fact that one router has certain information in its routing table does not mean that other routers have the same information.
  • Routing information about a path from one network to another also provides routing information about the reverse, or return, path.

Explanation: The following two routing table principles are correct: every router makes its decision alone, based on the information it has in its own routing table, and the fact that one router has certain information in its routing table does not mean that other routers have the same information.

2. Which route entry would be used for a packet with a destination IP address that matches an IP address of one of the router interfaces?

  • C for Directly Connected
  • L for Local
  • S for Static
  • depends on the source of the route

Explanation: The L (Local) route entry would be used for a packet with a destination IP address that matches an IP address of one of the router interfaces.

3. What type of network is accessed by a single route and the router has only one neighbor?

  • Stub network
  • Directly connected network
  • Next-hop network
  • Local network

Explanation: The stub network is accessed by a single route and the router has only one neighbor.

4. Which two route sources have the ability to automatically discover a new best path when there is a change in the topology? (Choose two.)

  • Static route
  • OSPF
  • EIGRP
  • Default route

Explanation: OSPF and EIGRP have the ability to automatically discover a new best path when there is a change in the topology.

5. True or False? A default route can only be a static route.

  • True
  • False

Explanation: The correct answer is False. A default route does not have to be a static route.

6. A network administrator configures a static route for the same destination network that was learned automatically by the router using OSPF. Which route will be installed and why?

  • Static route because it has a lower metric
  • Static route because it has a lower administrative distance
  • OSPF route because it has a lower metric
  • OSPF route because it has a lower administrative distance

Explanation: Static routes have a lower administrative distance than OSPF routes, so the static route is installed.

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