CMS专题

单选题Which best represents a typical attackthat takes advantage of RFC 792, ICMPType 3 messages?()ABlind connection-resetBLarge packet echo requestCPacket fragmentation offsetDBroadcast-based echo requestEExcessive bandwidth consumption

题目
单选题
Which best represents a typical attackthat takes advantage of RFC 792, ICMPType 3 messages?()
A

 Blind connection-reset

B

 Large packet echo request

C

 Packet fragmentation offset

D

 Broadcast-based echo request

E

 Excessive bandwidth consumption

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相似问题和答案

第1题:

Wendy was too nice to me those days, but I felt that she ______________________ me as a free babysitter.

A.was taking advantage of

B.take advantage of

C.takes advantage of

D.taking advantage of


参考答案:A

第2题:

Which best represents a typical attackthat takes advantage of RFC 792, ICMPType 3 messages?()

  • A、 Blind connection-reset
  • B、 Large packet echo request
  • C、 Packet fragmentation offset
  • D、 Broadcast-based echo request
  • E、 Excessive bandwidth consumption

正确答案:A

第3题:

A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded out, or at best jumbled up with a lot of other things, so that he has difficulty in laying his hand upon it.

_______________________________________________________________________________


正确答案:
蠢人把他碰到的每种木材(制成的家具)都拿进来。这样,可能对他有用的知识都被挤出去;最好的情况也是和其他种种事情混在一起,结果他很难抓住知识。

第4题:

Which of the following represents a safety hazard?()

  • A、liquid on the floor
  • B、a tiled floor
  • C、a concrete floor
  • D、carpet

正确答案:A

第5题:

Which of the following BEST describes a Blade server?()

  • A、Provides higher levels of physical redundancy than a typical server
  • B、Provides better rack space utilization than a typical server
  • C、Is 1.75 inches in height to fit properly in a rack
  • D、Uses an unshared backplane

正确答案:B

第6题:

Which of the following statements represents an advantage of an electromagnetic clutch?

A.Large misalignments can be tolerated between the shaft and engine coupling

B.Slip is held to a minimum when reversing shaft rotation

C.Engine torsional vibrations to the driven shaft are eliminated

D.It aids in maintaining power factor


正确答案:C

第7题:

What is the best description of serialization delay? ()

  • A、the time it takes for a Layer 3 switch or a router to switch a packet from an inbound interface to the queue of the outbound interface
  • B、the time it takes for a propagate from source to destination
  • C、the time it takes to place a frame on the physical medium for transport
  • D、the time a packet resides in the outbound queue of a router

正确答案:C

第8题:

Which of the following best represents Mr.Westhusin’s attitude toward cloning?

[A] Animal cloning is a stupid attempt.

[B] Human cloning is not yet close to getting it worked out.

[C] Cloning is too inefficient and should be stopped.

[D] Animals cloning yes, and human cloning at least not now.


正确答案:D
观点态度题。文中多次引用了威斯苏森先生有关克隆的话,从中我们可以判断出他的态度。[A] 中a stupid attempt出现在文章开始部分,是他对于克隆人而非克隆动物的看法,因此[A] 错误。[B] 中not yet close to getting it worked out出现在文章末句,是他对待动物实验的看法,不包括克隆人,因此也不选[B] 。事实上,克隆人还没有开始,谈不上是否接近成功。第二段末句,威斯苏森先生提到克隆是极其低效的,但没有提出因此就应该被禁止。因此,[C]也错误。第二段倒数第二句,威斯苏森先生提出,动物实验中对动物卵的浪费以及动物的自然性流产还可以接受,但研究人就不行。可见,他默许克隆动物,但他反对克隆人,因此[D] 正确。

第9题:

Which statement best describes the Turbo ACL feature? ()

  • A、The Turbo ACL feature processes ACLs into lookup tables for greater efficiency
  • B、The Turbo ACL feature leads to increased latency, because the time it takes to match the packet isvariable
  • C、The Turbo ACL feature leads to reduced latency, because the time it takes to match the packet is fixedand consistent
  • D、Turbo ACLs increase the CPU load by matching the packet to a predetermined list

正确答案:A,C

第10题:

A customer states that it takes a while to refresh their display when multitasking and switching between windows, in Windows XP. Which of the following is the BEST way to shorten the delay and increase response time?()

  • A、Tell the user to use Safe Mode.
  • B、Disable the Windows Firewall Service.
  • C、Turn off the System Restore.
  • D、Change to Performance Mode.

正确答案:D

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