單項(xiàng)選擇題One type of frame switching uses low-latency forwarding and then switches to a higher-latency error checking mode when an error threshold is exceeded. What is the name of this frame switching mode?（）

A. store and forward
B. fragment-free
C. adaptive cut-through
D. fast-forward


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1.單項(xiàng)選擇題What is the advantage of using a multipoint interface instead of point-to-point subinterfaces when configuring a Frame Relay hub in a hub-and-spoke topology?（）

A. it avoids split-horizon issues with distance vector routing protocols.
B. IP addresses can be conserved if VLSM is not being used for subnetting.
C. A multipoint interface offers greater security compared to point-to-point subinterface configurations.
D. The multiple IP network addresses required for a multipoint interface provide greater addressing flexibility over point-to-point configurations.

2.多項(xiàng)選擇題What are the possible trunking modes for a switch port?（）

A.transparent
B.auto
C.on
D.desirable
E.client
F.forwarding

3.多項(xiàng)選擇題Which of the following are types of flow control?（）

A.buffering
B.cut-through
C.windowing
D.congestion avoidance
E.loadbalancing

4.單項(xiàng)選擇題Which statement about the ip classless router command is true?（）

A. The ip classless command is enabled by default in recent versions of IOS.
B. The ip classless command should only be enabled when static routing is being used instead of a routing protocol.
C. The ip classless command should be enabled by the network administrator whenever RIPv1 or IGRP is being used.
D. The ip classless command should be enabled by the network administrator whenever OSPF, RIPv2, or EIGRP is being used.