NET 126 ch 16

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

-Verify that the serial 0/0/1 interface is active and available.

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 verify the network addresses that are attached to the network devices -to check the networks that are advertised by the neighboring routers -to check the connectivity of PCs that are connected to the network devices

-to obtain information about directly connected Cisco devices

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 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.

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

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

It identifies a network that is learned through OSPF.

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

Remove the route using the no ip route command.

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 send it back to the source drop it

drop it

Which three IOS troubleshooting commands can help to isolate problems with a static route? (Choose three.) tracert show version show ip interface brief show arp ping show ip route

ping show ip route show ip interface brief

Refer to the exhibit. What action will R3 take to forward a frame if it does not have an entry in the ARP table to resolve a destination MAC address? sends a DNS request drops the frame sends an ARP request sends frame to the default gateway

sends an ARP request

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 protocols show ip interface brief tracert show ip route

show ip interface brief

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.) show ip interface brief tracert ping show ip route show ip protocols

show ip interface brief ping

Refer to the exhibit. True or False? R1 must encapsulate received packets into new frames before forwarding them to R2.

true

Refer to the exhibit. True or False? R2 will forward frames to R3 with an all 1s Layer 2 address.

true, point to point link between R2 and R3 uses the destination address of all 1's