单项选择题

Which of the following is a sign that a computer has been infected by a worm?（）

A. Screensaver changed on its own
B. Unauthorized outgoing emails being sent
C. Desktop background changed on its own
D. Left and right mouse buttons have been flipped

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热门试题

单项选择题

Users in the office report that the speed of the Internet has drastically decreased since the recent network hardware refresh. Which of the following could be attributed to the problem?（）

A. The firewall was not powered back on
B. The DHCP server is not working correctly
C. The cellular repeater installed is interfering with the network speed
D. The new switches are configured for 10MB

多项选择题

For added security, a network administrator has decided to lock down the wireless network. Which of the following are ways to accomplish this? （）(Select TWO).

A. Disable all 802.11 traffic
B. Disable the SSID from broadcasting
C. Disable WPA
D.Enable Bluetooth only communication
E. Change the default admin password
F. Disable WEP