A user is connected on a DSL line and is using a PPP over Ethernet service.Which network device strips the ATM header from the datagram and investigates the PPP header?（）
A、DSLAM
B、DSL modem
C、ERX Edge Router
D、customer workstation
在Visual FoxPro中，以独占方式打开数据库文件的命令短语是（）。
A．EXCLUSIVE
B．SHARED
C．NOUPDATE
D．VALIDATE
下列有关浸泡消毒法的描述不妥的是（）
A、物品使用前必须洗净擦干
B、物品与药液应充分接触
C、对金属有腐蚀性作用的药液不宜用作器械消毒
D、经浸泡过的器械能直接使用
E、药液应定期更换
Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are getting the following error message： telnet： connect： A remote host refused an attempted connect operation Which of the following options could be the cause of this problem（）
A、The routing table on the AIX server is incorrect.
B、The IP address in the /etc/hosts file is incorrect，
C、The portmap daemon is not running on the AIX server.
D、The inetd daemon is not running on the AIX server.
免费软件下载，是利用了Internet提供的（）功能。
A、网上聊天
B、文件传输
C、电子邮件
D、电子商务
An AIX server will not boot in normal mode and the server must be booted into maintenance mode to rebuild the boot logical volume. A NIM master is not defined in this environment. How is the system booted into maintenance mode to perform this task （）
A、Apply power and when the SMS menus appear press 5 repeatedly to enter a maintenance boot automatically. The system will present a maintenance shell eventually.
B、Boot media such as CDROM or Tape is required to boot into maintenance mode. When inserted into the proper device the system automatically boots into maintenance mode when it can not boot into normal mode.
C、Apply power and the server automatically boots into maintenance mode where you can select your disk to rebuild the boot logical volume.
D、Boot media such as CDROM or Tape is required and an administrator must select the proper SMS menus to get into maintenance mode.
