Computer Networking
Which of the following communications lines is best suited to interactive processing applications?

simplex lines
full-duplex lines
narrowband channels
None of these
mixed band channels

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

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Computer Networking
A front-end processor is

a user computer system
preliminary processor of batch jobs.
a minicomputer that relieves main-frame computers at a computer centre of communications control functions
None of these
a processor in a large-scale computer that executes operating system instructions

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