Troubleshooting Static Routes and Network Connectivity
Troubleshooting Network Connectivity
The output of the show interfaces serial 0 / 1 Router # show the following:
Serial0 / 1 is up, line protocol is down
What is the most likely cause of that line protocol being disabled?
Serial0 / 1 is disabled. There is no cable connecting the routers. The remote router is using serial 0 / 0. No clock frequency has been established.
What addresses can be used to summarize networks from 172.16.0.0/24 to 172.16.7.0/24?
172.16.0.0/21, 172.16.1.0/22, 172.16.0.0 255,255,255,248, 172.16.0.0 255.255.252.0
Refer to the exhibit. How are packets destined for the 172.16.0.0 network forwarded?
Router1 will perform a search of the appellant and the packet will exit S0 / 0. Router1 will do a search of the appellant and the packet will exit S0 / 1. There is no matching interface associated with network 172.16.0.0, so the packets are discarded. There is no matching interface associated with network 172.16.0.0 so packets will take the gateway of last resort and leave S0 / 2.
What administrative distance and metric in the routing table will have a static route pointing to the next hop IP?
- Administrative distance of 0 and metric of 0
- Administrative distance of 0 and metric of 1
- Administrative distance of 1 and metric of 0
- Administrative distance of 1 and metric of 1
Hosts in two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables.
What are the commands that can be used to aid in troubleshooting Layer 3 connectivity? (Choose two.)
- Ping
- Show arp
- Traceroute
- Show ip route
- Show controllers
- Show cdp neighbor
Refer to the exhibit.
What static route must be configured on Router1 so that host A can reach host B on the 172.16.0.0 network?
- Ip route 192.168.0.0 172.16.0.0 255.255.0.0
- ip route 172.16.0.0 255.255.0.0 192.168.0.1
- ip S0/0/1 route 172.16.0.0 255.255.0.0
- ip route 172.16.0.0 255.255.0.0 S0/0/0
Which of the following shows the command Router #show cdp neighbors? (Choose two.)
- load
- platform
- reliability
- timeout
- local interface
Why are you advised to enter a next-hop IP address when creating a static route whose exit interface is an Ethernet network? | |
| Adding the address of the next-hop router eliminates the need to conduct any search in the routing table before forwarding a packet. | |
| In a multiple-access network, the router cannot determine the MAC address of the next hop for the Ethernet frame without a next-hop address. | |
| Using a next-hop address in a static route provides a route with a lower metric. | |
| In multiple-access networks, using a next-hop address in a static route makes this a possible default route. | |
 | |
Refer to the exhibit. What set of commands will configure static routes that will allow WinterPark and Altamonte routers to send packets from each LAN and direct all other traffic to the Internet? | |
| WinterPark (config) # ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte (config) # ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte (config) # ip route 0.0.0.0 0.0.0.0 s0 / 1 | |
| WinterPark (config) # ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte (config) # ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte (config) # ip route 198.18.222.0 255,255,255,255 s0 / 1 | |
| WinterPark (config) # ip route 172.191.67.0 255.255.255.0 192.168.146.1 WinterPark (config) # ip route 0.0.0.0 0.0.0.0 192.168.146.1 Altamonte (config) # ip route 10.0.234.0 255.255.255.0 192.168.146.2 | |
| WinterPark (config) # ip route 172.191.67.0 255.255.255.0 192.168.146.1 Altamonte (config) # ip route 10.0.234.0 255.255.255.0 192.168.146.2 Altamonte (config) # ip route 0.0.0.0 0.0.0.0 s0 / 0 | |
What happens to a static route entry in a routing table when the outgoing interface is not available? | |
| The route is removed from the table. | |
| The router interrogates neighbors in search of a replacement route. | |
| The route remains on the table because it was defined as static. | |
| The router redirects the static route to compensate for the loss of the next-hop device. | |
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The routers shown in the diagram use the subnet assignments are illustrated. What is the most efficient route summary that can be configured in Router3 to publish internal networks to the cloud? | |
| 192.1.1.0/26 and 192.1.1.64/27 | |
| 192.1.1.128/25 | |
| 192.1.1.0/23 and 192.1.1.64/23 | |
| 192.1.1.0/24 | |
| 192.1.1.0/25 | |
| 192.1.1.0/24 and 192.1.1.64/24 | |