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單項(xiàng)選擇題

Which of the following connectivity issues is likely to occur within a token ring network?（）

A. Crosstalk
B. Broadcast storm
C. Duplex mismatch
D. Collision

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單項(xiàng)選擇題

An administrator is trying to isolate the location of a persistent connectivity problem caused by a faulty NIC.
Which of the following diagrams would assist the technician in finding the machine that is causing the problem?（）

A. Physical and logical network
B. Physical network
C. Logical network
D. DHCP tables and DNS records

多項(xiàng)選擇題

Which of the following ports are used by default for web servers? （）(Select TWO)

A.80
B.110
C.123
D.143
E.443

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