Computer Networking
A network administrator is connecting hosts A and B directly through their Ethernet interfaces, as shown in the illustration. Ping attempts between the hosts are unsuccessful. What can be done to provide connectivity between the hosts?1. A crossover cable should be used in place of the straight-through cable.2. A rollover cable should be used in place of the straight-through cable.3. The subnet masks should be set to 255.255.255.192.4. A default gateway needs to be set on each host.5. The subnet masks should be set to 255.255.255.0.

1 only
2 only
3 and 4 only
2 and 5 only
1 and 5 only

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Computer Networking
Modulation is the process of

converting analog signals to digital signals
performing data encryption.
Multiplexing various signals into high speed line signals
converting digital signals to analog signals

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Computer Networking
RS-449/442-A/423-A is

the ratio of the number of data units in error to the total number of data units
a check bit appended to an array of binary digits to make the sum of the all the binary digits
a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression the resulting expression will not conform to the rules of construction and
a set of physical layer standards developed by EIA and intended to replace RS-232-
None of these

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Computer Networking
The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?

NVRAM should be erased and the router restarted.
The new configuration should be entered and saved.
Flash should be erased and the router restarted.
RAM should be erased and the router restarted.

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