Where does Layer2 de-encapsulation occur on the ERX Edge Router？（）
A、on the SRP
B、on the I/O adapter
C、on the egress line module
D、on the ingress line module
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Where does Layer2 de-encapsulation occur on the ERX Edge Router？（）
A、on the SRP
B、on the I/O adapter
C、on the egress line module
D、on the ingress line module
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
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.
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.
对于未中标的投标人，招标人应退还投标人的__(12)__。
(12)
A.参加投标的费用
B.购买招标文件的费用
C.投标保证金
D.编制投标书的费用
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
