Computer Networking
Which of the following does not allow multiple users or devices to share one communications line?

None of these
controller
concentrator
doubleplexer
multipplexer

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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.

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

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