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21 Cards in this Set
- Front
- Back
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How would you disable DNS resolution on a router?
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no ip domain-lookup
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How would you view the routing table on a router?
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show ip route
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How would you set the IP address for the serial 0 interface to 8.0.1.1/24?
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interface serial 0
ip address 8.0.1.1 255.255.255.0 |
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How would you set the password for console connections to "cisco"?
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line console 0
password cisco login |
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How would you set the password for telnet connections to "cisco"?
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line vty 0 4
password cisco login |
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What does the show hosts command do?
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Lists all hostnames and IP addresses that are known, either static entries that were entered manually or dynamic entries learned through DNS lookups.
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How would you prevent a router from printing error and debug informational messages that obscure commands you are in the middle of typing?
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logging synchronous
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How would you set the name servers for a router to 1.1.1.1 and 2.2.2.2
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either:
ip name-server 1.1.1.1 2.2.2.2 or: ip name-server 1.1.1.1 ip name-server 2.2.2.2 |
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How would you tell a router to display subnet masks instead of using prefix notation?
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terminal ip netmask-format decimal
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In the output of the show ip route command, what does a "C" on the left side mean?
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That the router has a direct physical connection to that subnet, and the related interface is in Up and Up status.
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How would you bring down the Ethernet 0 interface for administration, and how would you verify that status once it was done?
How would you bring the interface back up when you were done? |
interface ethernet 0
shutdown show ip interface brief interface ethernet 0 no shutdown |
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What would the command "clock rate 128000" do? And under what conditions might it fail?
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It manually sets the transmission rate for an interface. There must be a DCE cable present for the command to succeed, if a DTE cable is present, for instance, it will fail.
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What does ICMP stand for?
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Internet Control Message Protocol
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What are the ICMP message types?
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Destination Unreachable
Time exceeded Redirect Echo |
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If you typed "ping 10.1.2.254" and received the following ouptut, what would it mean?
"....." |
There was no reply from that address.
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What are the different "Destination Unreachable" ICMP codes, and what kind of devices can send them?
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Network unreachable - router
Host unreachable - router Can't Fragment - router Protocol Unreachable - Endpoint host Port unreachable - Endpoint Host |
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What keystroke combination would you use to suspend an active telnet session?
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Ctrl-Shift-6 followed by "X"
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How could you see a list of currently suspended telnet sessions?
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show sessions
where |
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What is CDP?
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Cisco Discovery Protocol - it discovers basic information about other routers and switches without having to log in to them.
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What can CDP discover about neighboring network devices?
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IP and Data-Link Addresses
Hostname Platform Port Identifier Capabilities |
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How could you enter a static host definition on a router?
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ip host <name> <address>
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