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單項選擇題

Refer to the graphic.Computer 1 is consoles into switch A.Telnet connections and pings run from thecommand prompt on switch A fail.Which of the following could cause this problem?()

A.switch A dose not have a cdp entry for switch
B.or router JAXB.switch A dose not have an IP address
C.port 1 on switch A should be an access port rather than a trunk port
D.switch A is not directly connected to router JAX
E.switch A does not have a default gateway assigned

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