單項(xiàng)選擇題

Web users are reporting issues downloading various types of media. Which of the following shouldthe administrator do FIRST?（）

A. Find out what has recently changed on the network
B. Create an action plan and solution identifying potential effects.
C. Continue to gather information and see what other problems may exist.
D. Determine the most probable cause.

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單項(xiàng)選擇題

When debugging a routing problem, the time-to-live (TTL) value can be used to determine:（）

A. Number of routes available.
B. Number of router hops.
C. Time that an advertised route is valid.
D. Time to make a round trip.

單項(xiàng)選擇題

An administrator has found interference on a network. Which of the following cable types is thenetwork MOST likely composed of?（）

A. UTP
B. Fiber
C. RG-6
D. STP