单项选择题

Link aggregation is also known as port:（）

A.distribution
B.mirroring
C.spanning
D.trunking

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单项选择题

When verifying a new wireless installation the administrator is unable to see a wireless signal withany wireless laptop. The MOST likely problem is:（）

A. The SSID is not set to broadcast
B. An incorrect channel is being used
C. Incorrect client security settings are configured
D. Incorrect client configuration on the laptops

单项选择题

Which of the following WAN protocols is a circuit switching technology?（）

A. ISDN
B. SONET
C. Frame Relay
D. ATM

单项选择题

Which of the following wireless standards has a MAXIMUM throughput, by default, of 11Mbps?（）

A.802.11g
B.802.11a
C.802.1n
D.802.11b