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單項(xiàng)選擇題

For security reasons a network technician wants to install a Linux based email server, Microsoft
web services, and directory services on different servers.
Which of the following technologies would be BEST to reduce hard ware costs?（）

A. VPN concentrator
B. Virtual servers
C. Wireless
D. Multimode fiber

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單項(xiàng)選擇題

An administrator is troubleshooting wireless connectivity issues at a client’s office and discoversthat the machine loses connectivity when the wireless phone is being used. Which of the following WAPS should be installed to help resolve the issue?（）

A. 802.1 1g
B. 802.1X
C. 802.11n
D. 802.11b

單項(xiàng)選擇題

A technician wants to use an existing DHCP server for three additional VLANs. Which of the following features needs to be configured to allow for this addition?（）

A. DHCP server
B. Proxy server
C. Repeater
D. DHCP relay