5 Nov, 2022 Liam Brooks

Practice–Cisco Routing Between Networks Layer

The following activities provide practice with the topics introduced in this chapter.

Labs

Lab—IPv4 Addresses and Network Communication (7.1.4)

Lab—Connect to a Wireless Router (7.3.4)

Packet Tracer Activities

Packet Tracer—Observe Data Flow in a LAN (7.3.3)

Check Your Understanding Questions

Complete all the review questions listed here to test your understanding of the topics and concepts in this chapter. Appendix A, “Answers to the ‘Check Your Understanding‛ Questions,” lists the answers.

1. Which information do routers use to forward a data packet toward its destination?

  1. Destination IP address
  2. Destination data-link address
  3. Source IP address
  4. Source data-link address

2. A router receives a packet from the GigabitEthernet 0/0 interface and determines that the packet needs to be forwarded out the GigabitEthernet 0/1 interface. What does the router do next?

  1. Create a new Layer 2 Ethernet frame to be sent to the destination
  2. Route the packet out the GigabitEthernet 0/1 interface
  3. Look into the routing table to determine whether the destination network is in the routing table
  4. Look into the ARP cache to determine the destination IP address

3. Refer to the exhibit. The IP address of which device interface should be used as the default gateway setting of host H1?

  1. R2: S0/0/1
  2. R1: G0/0
  3. R2: S0/0/0
  4. R1: S0/0/0

4. During the process of forwarding traffic, what does the router do immediately after matching the destination IP address to a network on a directly connected routing table entry?

  1. Switch the packet to the directly connected interface
  2. Look up the next-hop address of the packet
  3. Discard the traffic after consulting the routing table
  4. Analyze the destination IP address

5. What does a router do if it cannot determine where to forward an incoming packet?

  1. The router sends an incident message to the network administrator.
  2. The router saves it in the sending queue and tries to forward it again later.
  3. The router forwards it out all interfaces.
  4. The router drops it.

6. In implementing a LAN in a corporation, what are the advantages of dividing hosts between multiple networks connected by a distribution layer? (Choose three.)

  1. It provides increased security.
  2. Only LAN switches are needed.
  3. It reduces complexity and expense by using LAN switch devices.
  4. It increases traffic bandwidth between segments through distribution layer devices.
  5. It makes the hosts invisible to those on other local network segments.
  6. It splits up broadcast domains and decreases traffic.

7. What type of route is indicated by the code C in an IPv4 routing table on a Cisco router?

  1. Static route
  2. Directly connected route
  3. Dynamic route that is learned through EIGRP
  4. Default route

8. Which portion of the network layer address does a router use to forward packets?

  1. Gateway address
  2. Network portion
  3. Host portion
  4. Broadcast address

9. What role does a router play on a network?

  1. Forwarding frames based on a MAC address
  2. Selecting the path to destination networks
  3. Forwarding Layer 2 broadcasts
  4. Connecting smaller networks into a single broadcast domain

10. A router receives an incoming packet and determines that the destination host is located on a LAN directly attached to one of the router interfaces. Which destination address does the router use to encapsulate the Ethernet frame when forwarding the packet?

  1. MAC address of the SVI on the switch
  2. MAC address of the default gateway of the LAN
  3. MAC address of the destination host
  4. MAC address of the interface of the connected router

11. Which address should be configured as the default gateway address of a client device?

  1. The IPv4 address of the router interface that is connected to the Internet
  2. The IPv4 address of the router interface that is connected to the same LAN
  3. The Layer 2 address of the switch management interface
  4. The Layer 2 address of the switch port that is connected to the workstation