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單項選擇題

A second network card in a server that activates if the primary card fails is an example of which of the following network performance optimization?（）

A.Load balancing
B.QoS
C.High availability
D.Fault tolerance

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單項選擇題

Which of the following cables would a technician make in order to identify a physical interfaceproblem?（）

A.Serial
B.Loopback
C.Rollover
D.Console

單項選擇題

A network technician is installing a small wireless network. A requirement is that individual users must authenticate using usernames and passwords.
Which of the following technologies would support users authenticating with encrypted usernames and passwords?（）

A.WPA TLS
B.WPA PEAP
C.64-bit WEP
D.128-bit WEP