问题 单项选择题

ICMP差错报文具有的特点不包括( )。

A.差错报文不享受特别优先权和可靠性,作为一般数据传输

B.ICMP差错报告数据中除包含故障IP数据报报头外,还包含故障IP数据报数据区的前64位数据

C.ICMP差错报告是伴随着抛弃出错IP数据报而产生的

D.在传输过程中,ICMP差错报文不会丢失、损坏或被抛弃

答案

参考答案:D

解析: ICMP差错报文有以下几个特点:(1) 差错报告不享受特别优先权和可靠性,作为一般数据传输。在传输过程中,它完全有可能丢失、损坏或被抛弃;(2) ICMP差错报告数据中除包含故障IP数据报报头外,还包含故障IP数据报数据区的前64位数据;(3) ICMP差错报告是伴随着抛弃出错IP数据报而产生的,IP软件一旦发生传输错洪,它首先把出错报文抛弃,然后调用ICMP向源主机报告差错信息。

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As crime skyrockets in many communities, people are finally beginning to look for long-lasting effective answers to stem the tide of juvenile crime. Reaching the youth who have committed a crime before they become (1) is an essential step in reversing the crime trend. One (2) may be the establishment of teen court. Teen court is known as a sentencing court for youths who have (3) . Teen courts primarily deal with first-time offenders. After arrest, the young offender must (4) to the charge in juvenile court. With (5) , the offender agrees to be sentenced and abide by the decision of peer jury (6) . Another essential component to teen court is that, as part of the sentence, the offender must sit in on one of more future peer juries to (7) for other offenders. For example, a county teen court in Illinois gives young offenders a chance to (8) their arrests from their permanent record by (9) or other duties ordered by the court. Teen court is not a trial court. All teens admit their guilt and (10) a sentence given to them by a jury of their peers. A judge is present to (11) of the court. The teen court alleviates the strain on the (12) and has been implemented in (13) since the first teen court opened in Odessa, Texas. Beside giving the offender a second chance, it gives the youth (14) in the judicial process.
The purpose of the teen court, aside from sentencing youth offenders, is to (15) both the offenders and the teen volunteers while simultaneously promoting (16) between defendants, the community, and the police. By offering this (17) system, teen court allows those teens who have made a bad decision an opportunity to (18) and learn from it. At the same time those teens learn (19) . The police, the community, and the (20) .

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