IPSEC技术的IKE（Internet key exchange）协议不包含以下哪个协议？（）

Which of the following exchanges of property are like-kind exchanges?

I.Convenience store owner trades several cases of potato chips for a cash register.

II.A completely rented apartment building traded for a parts supply warehouse to use in business.()

A、Only statement I is correct

B、Only statement II is correct

C、Both statements are correct

D、Neither statement is correct.

1991年，美国三家公司组成了‘商用Internet协会’（CommercialInternetExchangeAssociation），宣布用户可以把它们的Internet子网用于任何的商业用途，这标志了（ ）。

A．Internet开始进入商业领域

B．Internet的商业化彻底完成

C．Internet已完全替代了NSFNET

D．Internet已完全替代了ARPNET

A．SMTP

B．NNTP

C．POP3

D．IMAP4

E．WEB-DAV

A. EXCHANGE邮箱会自动推送邮件，第一时间收到邮件提醒

B. EXCHANGE手机日历可以共享给领导、同事，也可以查看他人共享的日历

C. 手机配臵EXCHANGE日历时，服务器输入：jx.mail.chinaunicom.cn

D. EXCHANGE服务支持全球通讯录功能，快速检索公司内联系人

{Page}

A. IPSec

B. SSL

C. L2TP

D. TheInternetKeyExchange

根据以下内容回答题:Exchange a glance with someone，then look away．Do you realize that you have made a statement?Hold the glance for the second longer，and you have made a different statement.Hold it for three seconds，and the meaning has changed again．For every social situation，there is a Dennissible time that you can hold a person’s gaze without being intimate，rude or aggre- ssive．If you are on an elevator，what gaze．time are you permitted?To answer this question，consider what you typically d0．You are likely to give other passengers a quick glance to size them up and to assure them that you mean flo threat． Since being close to another person signals the possibility of interaction，you need to give a signal telling others you want to be left alone．So you cut off eye contact，what sociologist Erv-ing Goffrnan calls“a dimming of the lights”you look down at the floor，at the indicator lights，anywhere but into another passenger"s eyes．Should you break the rule against staring at a stran-ger on an elevator，you will make the other person exceedingly uncomfortable，and you are likely to feel a bit strange yourself． If you hold eye contact for more than three seconds，what are you telling another person?Much depends on the person and situation，For instance，a man and woman communicate interest in this matter．They typieally gaze at each other for about three seconds at a time，then drop their eyes down for three seconds，before letting their eyes meet again．But-if one man gives another man a 3-second—plus stare，he signals“I know you，I am interested in you，”or“you look peculiar and I am CUriOUS about you．”This type of state ohen produces hostile feel—ings．

It can be inferred from the first paragraph that__________ ．

A.every glance has its significance

B.staring at a person is an expression of interest

C.a gaze longer than three seconds is unacceptable

D.a glance conveys more meaning than words

以下哪个账户不是OutLook所支持的______。

A.QQ账户

B.MicrosoftExchange

C.POP3

D.IMAP账户

A.IntheDHkeyexchangeprocess，thesessionkeyisneverpassedacrossthenetwork.

B.IntheDHkeyexchangeprocess，thepublicandprivatekeysaremathematicallyrelatedusingtheDH algorithm.

C.IntheDHkeyexchangeprocess，thesessionkeyispassedacrossthenetworktothepeerfor confirmation.

D.IntheDHkeyexchangeprocess，thepublicandprivatekeysarenotmathematicallyrelated，ensuring highersecurity