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Chapter: 6
259. How many wire pairs does half duplex and full duplex use?
A. One wire pair each B. Two wire pair each
C. Half uses two wire pair and full uses one wire pair
D. Full uses two wire pair and half uses one wire pair
Answer: D
Full duplex uses one set of wires to send and one set to receive, so it needs two wire pair. Half duplex
sends and receives on the same wire pair.
Chapter: 6
260. What is the maximum distance of 100BaseFX?
A. 400 meters B. 400 yards
C. 200 meters
D. 200 yards
Answer: A
The distance standards are in meters and 100BaseFX has a distance restriction of 400 meters.
Chapter: 6
261. If two Ethernet stations have a collision, what type of algorithm do they run to determine when the nodes can now transmit?
A. Who's First
B. BackUP
C. Backdown D. Backoff
Answer: D
When a collision occurs every device runs a backoff algorithm to determine a random wait period before
attempting to resend.
Chapter: 6