Computer Networking
Which of the following are unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?1. Half-duplex Ethernet operates in a shared collision domain.2. Half-duplex Ethernet operates in a private collision domain.3. Half-duplex Ethernet has higher effective throughput.4. Half-duplex Ethernet has lower effective throughput.

4 only
1 and 4
2 only
1,2 and 3

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Computer Networking
HDLC (High-level Data Link Control) is

None of these
network access standard for connecting stations to a circuit-switched network
a very common bit-oriented data link protocol issued by ISO.
a method access control technique for multiple-access transmission media
a method of determining which device has access to the transmission medium at any time

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Computer Networking
CSMA (Carrier Sense Multiple Access) is

a method access control technique for multiple-access transmission media.
None of these
a very common bit-oriented data link protocol issued by ISO.
a method of determining which device has access to the transmission medium at any time
network access standard for connecting stations to a circuit-switched network

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