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單項選擇題

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

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多項選擇題

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

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

單項選擇題

A technician needs to troubleshoot connectivity between two devices located on the same network.
Which of the following BEST describes the type of protocol being used?（）

A.IGP
B. EIGRP
C. EGP
D. BGP