单项选择题

An administrator is unable to ping a workstation. Which of the following tools would BEST help toresolve the issue?（）

A. Cable tester
B. Multimeter
C. Toner probe
D. Protocol analyzer

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多项选择题

A. Load balancing
B. Caching engines
C. Qos
D. Fault tolerance systems
E. Traffic shaping

单项选择题

A. 25 meters (82 feet)
B. 100 meters (328 feet)
C. 500 meters (1640 feet)
D. 1000 meters (3280 feet)

单项选择题

A. Remote console
B. Statefulness
C. Address translation
D. Zones