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多項(xiàng)選擇題

Which are valid modes for a switch port used as a VLAN trunk? (Choose three.)（）

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

單項(xiàng)選擇題

Which statement is true about full-duplex Ethernet in comparison to half-duplex Ethernet?（）

A.Full-duplex Ethernet consists of a shared cable segment. Half-duplex Ethernet provides a point-to-point link.
B.Full-duplex Ethernet uses a loopback circuit to detect collisions. Half-duplex Ethernet uses a jam signal.
C.Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth.
D.Full-duplex Ethernet uses two wires to send and receive. Half-duplex Ethernet uses one wire to send and receive.