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
Which command will create a group called ’delivery’ and set the administrators to ’john’ and ’mary’？（）
A、mkgroup -A=john，mary delivery
B、groupadd -A=john，mary delivery
C、mkgroup adms=john，mary delivery
D、groupadd adms=john，mary delivery
如图所示，对该正六边形进行打断操作，系统要求指定第二打断点，这时输入了@，然后回车结束，操作后的图形周长为？（）
A、0
B、600
C、599
D、在0~600中随机分配
A user is unable to print to the network printer. A print job appears in their print queue and cannotbe deleted. The user has the correct permissions to modify and delete print jobs. All other users are able to print to the network printer. Which of the following procedures should the technician try FIRST?（）
A、Cycle the power on the network printer.
B、Verify the network cable is connected to the printer.
C、Reinstall the printer driver.
D、Restart the print spooler service.
在switch（expression）语句中，expression的数据类型不能是（）。
A、double
B、char
C、byte
D、short
HTML是指()
A.万维网
B.超文本标识语言
C.Java语言
D.统一资源定位器
