Troubleshoot Static and Default Routes

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

• 1. The router examines the destination IP address.

  2. The router examines the destination MAC address.

  3. The router identifies the Ethernet Type field.

  4. The router de-encapsulates the Ethernet frame.

• 1. The router examines the destination MAC address.

  2. The router identifies the Ethernet Type field.

  3. The router de-encapsulates the Ethernet frame.

  4. The router examines the destination IP address.

• 1. The router examines the destination IP address.

  2. The router examines the destination MAC address.

  3. The router de-encapsulates the Ethernet frame.

  4. The router identifies the Ethernet Type field.

• 1. The router de-encapsulates the Ethernet frame.

  2. The router examines the destination MAC address.

  3. The router identifies the Ethernet Type field.

  4. The router examines the destination IP address.

• 1. The router examines the destination MAC address.

  2. The router identifies the Ethernet Type field.

  3. The router examines the destination IP address.

  4. The router de-encapsulates the Ethernet frame.

Which three IOS troubleshooting commands can help to isolate problems with a static route?

• show version

• ping

• tracert

• show ip route

• show ip interface brief

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

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.

• Northing, 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.

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 towards 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.

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 neighbouring 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.

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?

• ping

• show ip protocols

• show ip interface brief

• show ip route

• tracert

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 useable IP address.

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.

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.