单项选择题

What is the maximum data rate specified for IEEE 802.11b WLANs?（）

A.10Mbps
B.11Mbps
C.54Mbps
D.100Mbps

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单项选择题

While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate?（）

A.The port is experiencing errors.
B.The port is administratively disabled.
C.The port is blocked by spanning tree.
D.The port has an active link with normal traffic activity.

单项选择题

On point-to-point networks, OSPF hello packets are addressed to which address?（）

A.127.0.0.1
B.172.16.0.1
C.192.168.0.5
D.223.0.0.1
E.224.0.0.5
F.254.255.255.255

单项选择题

In order to allow the establishment of a Telnet session with a router, which set of commands must be configured?（）

A.A
B.B
C.C
D.D
E.E
F.F