To copy the running-config to NVRAM so that it will be used if the router is restarted, use the
copy running-config startup-config command (
copy run start for short).
2. Which of the following commands displays the configurable parameters and statistics of all interfaces on a router?
With the
show interfaces command, you can view the configurable parameters, get statistics for the interfaces on the router, verify if the interfaces are shut down, and see the IP address of each interface.
3. Which of the following commands will configure all the default VTY ports on a router?
To completely replace the running-config with the startup-config, you must reload the router. Note : You may have picked option C, which isn't a bad answer. Remember, though, it doesn't replace the configuration, it appends it.
6. You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?
The command
show ip protocols will actually show you the broadcast address for each interface - too bad it isn't a possible answer. Your best answer is
show interfaces, which will provide the IP address and mask for each interface.
7. If your routing table has a static, a RIP, and an IGRP route to the same network, which route will be used to route packets by default?
Static routes have an administrative distance of 1 by default. Unless you change this, a static route will always be used over any other found route. IGRP has an administrative distance of 100, and RIP has an administrative distance of 120, by default.
8. What command is used to stop RIP routing updates from exiting out an interface but still allow the interface to receive RIP route updates?
Correct Answer: It describes when a router sets the metric for a downed link to infinity.
Explanation:
Another way to avoid problems caused by inconsistent updates and to stop network loops is route poisoning. When a network goes down, the distance-vector routing protocol initiates route poisoning by advertising the network with a metric of 16, or unreachable (sometimes referred to as infinite).
10. Network 206.143.5.0 was assigned to the Acme Company to connect to its ISP. The administrator of Acme would like to configure one router with the commands to access the Internet. Which commands could be configured on the Gateway router to allow Internet access to the entire network?
Gateway(config)# ip route 0.0.0.0 0.0.0.0 206.143.5.2
There are actually three different ways to configure the same default route, but only two are shown in the answer. First, you can set a default route with the
0.0.0.0 0.0.0.0 mask and then specify the next hop, as in option A. Or you can use
0.0.0.0 0.0.0.0 and use the exit interface instead of the next hop. Finally, you can use option D with the
ip default-network command.