单项选择题

Which of the following commands will show all active TCP/IP network connections?（）

A.PING
B.NETSTAT
C.NET
D.TRACERT

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单项选择题

A technician is able to connect to the Internet but cannot connect to a remote machine through Remote Desktop in Windows XP. Each time the technician attempts to connect to a remote location, the software times out. Which of the following is the MOST likely problem?（）

A. The Java applet is disabled in the web browser.
B. Deny all has not been configured in the firewall.
C. Wireless network drivers are corrupt.
D. Port forwarding settings are not correct

单项选择题

A technician is setting up a new inkjet printer and notices that the images appear hazy. Which of the following should the technician perform FIRST to resolve the issue?（）

A. Refill the cartridges
B. Replace the toner
C. Replace the network cable
D. Calibrate the inkjet printer