单项选择题

Which of the following network devices would MOST likely be installed on a network to helpreduce broadcast traffic and to allow individual virtual networks?（）

A.Switch
B.Repeater
C.Hub
D.WAP

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单项选择题

Users report an intermittent degradation of sound on their IP phones. Which of the following woulda network administrator do to alleviate the problem?（）

A. Use plenum cables
B. Provide fault tolerance for the switch
C. Configure VLAN trunking on the switch
D. Configure QoS

单项选择题

A technician is working on a SOHO wireless network and notices that the wireless adaptor in the
laptop shows excellent connection at 11Mbps.
The technician has a wireless N adaptor.
Which of the following would BEST describe this connection speed?（）

A. The laptop is too far away from the WAP.
B. The WAP is using 802.11a frequencies.
C. The laptop is only set to allow 802.11n connections.
D. The technician is on an 802.11b network.

单项选择题

Which of the following routing protocols involves all routers knowing the connections status ofother routers within the network?（）

A.RIPv2
B.OSPF
C.IGRP
D.BGP