What must an administrator do to prevent new telnet users from connecting to the system?（）
第1题：
A network administrator has configured source NAT, translating to an address that is on a locally connected subnet.The administrator sees the translation working, but traffic does not appear to come back.What is causing the problem?（）
A. The host needs to open the telnet port.
B. The host needs a route for the translated address.
C. The administrator must use a proxy-arp policy for the translated address.
D. The administrator must use a security policy, which will allow communication between the zones.
第2题：
30． What is the passage mainly about? 、
A． We must make more friends．
B． Don-t quarrel with our parents．
C． What should we do when our parents quarrel．
D． Sometimes we must stay away from our parents．
第3题：
A、I don’t know.
B、That’s not my business.
C、You must talk with him.
D、You’d better talk with him.
第4题：
A natural disaster has occurred and the administrator must return the network to a healthy status.Which of the following should the administrator do in this case?（）
第5题：
你想把引航员梯装在哪一舷？（）
第6题：
A.rmdev -l /dev/pts
B.touch /etc/nologin
C.chdev -l sys0 -a nologin
D.chuser -a login=false ALL
第7题：
第8题：
此题为判断题(对，错)。
第9题：
You are the network administrator at TestKing. You need to perform password recovery on Router TK1. What must you modify in the password recovery process?（）
第10题：
A system administrator would like to set a system to reboot after a crash. What is the best way to do this？（）