题目内容

DES加密算法采用的密码技术是(18),它采用(19)位密钥对传输的数据进行加密,著名的网络安全系统Kerberos采用的是(20)加密技术。公钥密码是(21),常用的公钥加密算法有(22),它可以实现加密和数字签名。

A. 对称密钥密码技术
B. 公钥密码技术
C. 数字签名技术
D. 访问控制技术

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A.Ping服务器名字B.http://服务器名字C.Nslookup服务器名字D.Netstat服务器名字

A. Ping服务器名字
B. http://服务器名字
C. Nslookup服务器名字
D. Netstat服务器名字

一级房地产估价机构资质由()审批。

A. 国务院
B. 省级人民政府
C. 建设部
D. 房地产估价师学会

听力原文:W: Eastern Airlines Agency. Good Morning.
M: Good Morning. I want to book a round-trip ticket.
W: Where are you flying from, and what's your destination, sir?
M: From Montreal to Toronto.
W: What day do you want to fly?
M: I want to leave on Monday the 24th and return on Friday. Do you have any flights in the afternoon?
W: Yes, we do. By the way, will that be first class or economy class? How many people are there in your party?
M: Just myself. And I'd like economy class.
W: All right, there are seats still available. Would you prefer a window, aisle or center seat?
M: Window, please. Thank you.
What does the man book?

A round-trip air ticket.
B. A one way ticket.
C. A single room.

【B7】

A. at
B. in
C. to
D. for

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