相关试题
【判断题】
计算机网络的拓扑结构主要是指资源子网的拓扑结构
【判断题】
计算机病毒是编制者在计算机程序中插入的破坏计算机功能或者数据，能影响计算机使用，能自我复制的一组计算机指令或者程序代码
【判断题】
因特网是世界上最大的网络，它是典型的广域网
【判断题】
资源子网提供访问网络和处理数据的能力，由主机系统、终端控制器和终端组成
【判断题】
在数字通信中，传输介质是两个通信设备之间实现的物理连接部分，它能将信号从一方传输到另一方
【判断题】
TCP提供的可靠性是利用一种称为“重传肯定确认”的机制来实现的
【判断题】
防火墙不能防止利用服务器系统漏洞所进行的攻击
【判断题】
从逻辑功能上看，计算机网络是由一些网络节点和连接这些节点的通信链路组成的
【判断题】
如果ping不通默认网关，说明IP地址信息中有关默认网关的设置是错误的
【判断题】
Internet其实就是一台提供特定服务的计算机
【判断题】
同轴电缆只能传送数字信号，模拟信号要用光纤才可以传输
【判断题】
MODEM是对传输信号进行A/D和D/A转换的，是在模拟信道中传输数字信号时不可缺少的设备
【判断题】
网络层的协议ARP实现物理地址转换为IP地址的功能
【判断题】
使用自己的电脑上互联网，肯定不会泄露私人信息
【判断题】
接入网不可以在同一个网络中同时实现语音、数据和图像三种业务
【判断题】
若一线路传输信号的频率范围为750～2500Hz，则线路带宽为2500Hz
【判断题】
计算机网络的三个主要组成部分是若干主机、一个通信子网、一组通信协议
【判断题】
保密性是指信息不泄露给非授权用户、实体或过程，或供其利用的特性
【判断题】
在一个城市范围内所建立的计算机通信网称为城域网
【判断题】
安装个人防火墙是预防网络病毒的唯一方法
【判断题】
一个网络的子网掩码为255.255.248.0，则150.150.42.0是该网络中的合法网络地址
【判断题】
IGMP协议工作在TCP/IP协议的传输层
【判断题】
网卡速率是决定网络传输速度的一个性能指标，其单位是MBps，即兆字节/秒
【判断题】
对等网络中，计算机地位平等，没有从属关系，也没有专用的服务器和客户机
【判断题】
在客户机/服务器网络中，至少有一台以上的专用服务器用来管理网络，控制网络运行
推荐试题
【单选题】
我们的干部要上进，我们的党要上进，我们的国家要上进，我们的民族要上进，就必须大兴___之风，坚持学习、学习、再学习，坚持实践、实践、再实践。
A. 调查研究
B. 学习
C. 实事求是
D. 解放思想
【单选题】
做县委书记就要做焦裕禄式的县委书记，始终做到心中有党、心中有民、心中有责、___。
A. 心中有律
B. 心中有法
C. 心中有戒
D. 心中有爱
【单选题】
《中国共产党廉洁自律准则》要求党员领导干部___，自觉保持人民公仆本色。
A. 廉洁用权
B. 廉洁从政
C. 廉洁修身
D. 廉洁奉公
【单选题】
《中国共产党问责条例》规定，对党的领导干部实行___。
A. 一次性问责
B. 阶段性问责
C. 任期问责
D. 终身问责
【单选题】
《党章》规定，党的纪律是党的___必须遵守的行为规则，是维护党的团结统一、完成党的任务的保证。
A. 基层组织
B. 所有干部
C. 各级组织和全体党员
D. 领导干部
【单选题】
The shy girl felt _________ and uncomfortable when she could not answer her teacher’s questions.
A. amazed
B. awkward
C. curious
D. amused
【单选题】
This hotel _______ $ 60 for a single room with bath.
A. claims
B. demands
C. prices
D. charges
【单选题】
Frequently singleparent children ____________ some of the functions that the absent adult in the house would have served.
A. take off
B. take after
C. take in
D. take on
【单选题】
A peculiarly pointed chin is his most memorable facial __________.
A. mark
B. feature
C. trace
D. appearance
【单选题】
John Dewey believed that education should be a preparation for life, that a person learns by doing, and that teaching must ________ the curiosity and creativity of children.
A. seek
B. stimulate
C. shape
D. secure
【单选题】
Criticism and self-criticism is necessary _______ it helps us to find and correct our mistakes.
A. by that
B. at that
C. on that
D. in that
【单选题】
However, at times this balance in nature is ________, resulting in a number of possibly unforeseen effects.
A. troubled
B. disturbed
C. confused
D. puzzled
【单选题】
The patient’s health failed to such an
extent that he was put into _____ care.
A. tense
B. rigid
C. intensive
D. tight
【单选题】
Does everyone on earth have an equal right _________ an equal share of its resources?
A. by
B. at
C. to
D. over
【单选题】
In 1914, an apparently insignificant event in a remote part of Eastern Europe __________ Europe into a great war.
A. inserted
B. imposed
C. pitched
D. plunged
【单选题】
We had to ___________ a lot of noise when the children were at home.
A. go in for
B. hold on to
C. put up with
D. keep pace with
【单选题】
A person's calorie requirements vary ______ his life.___
A. across
B. throughout
C. over
D. within
【单选题】
Generous public funding of basic science would ________considerable benefits for the country's health, wealth and security.___
A. lead to
B. result from
C. lie in
D. settle down
【单选题】
In a time of social reform, people's state of mind tends to keep ___________ with the rapid changes of society___
A. step
B. progress
C. pace
D. touch
【单选题】
The speech which he made __________ the project has bothered me greatly.___
A. regarded
B. concerned
C. regarding
D. concerning
【单选题】
Harry was _______ by a bee when he was collecting the honey.___
A. stung
B. stuck
C. bitten
D. scratched
【单选题】
The thief tried to open the locked door but _________.___
A. in no way
B. in vain
C. without effect
D. at a loss
【单选题】
Remember that customers don't ________ about prices in that city.___
A. debate
B. consult
C. dispute
D. bargain
【单选题】
I hope that you'll be more careful in typing the letter. Don't _________ anything.___
A. lack
B. withdraw
C. omit
D. leak
【单选题】
The tomato juice left brown __________ on the front of my jacket.___
A. spot
B. point
C. track
D. trace
【单选题】
The committee is totally opposed ________ any changes being made in the plans.___
A. of
B. on
C. to
D. against
【单选题】
I'm very sorry to have _______ you with so many questions on such an occasion.___
A. interfered
B. offended
C. impressed
D. bothered
【单选题】
The price of beer _______ from 50 cents to $4 per liter during the summer season.___
A. altered
B. ranged
C. separated
D. differed
【单选题】
Their son doesn't know what to ________ at the university; he can't make up his mind about his future.___
A. take in
B. take up
C. take over
D. take after
【单选题】
Although they plant trees in this area every year, the tops of some hills are still _________.___
A. blank
B. hollow
C. vacant
D. bare
【单选题】
Being a pop star can be quite a hard life, with a lot of traveling ________ heavy schedules.
A. with regard to
B. as to
C. in relation to
D. owing to
【单选题】
Tony is very disappointed _______ the results of the exam.
A. with
B. for
C. toward
D. on
【单选题】
William Penn, the founder of Pennsylvania, _________ defended the right of every citizen to freedom of choice in religion.
A. peculiarly
B. indifferently
C. vigorously
D. inevitably
【单选题】
When people become unemployed, it is _______ which is often worse than lack of wages.___
A. laziness
B. poverty
C. idleness
D. inability
【单选题】
In previous times, then fresh meat was in short __________, pigeons were kept by many households as a source of food.
A. store
B. provision
C. reserve
D. supply
【单选题】
Those gifts of rare books that were given to us were deeply _________.___
A. appreciated
B. approved
C. appealed
D. applied
【单选题】
It is our ___________ policy that we will achieve unity through peaceful means.___
A. consistent
B. continuous
C. considerate
D. continual
【单选题】
He is __________ about his chances of winning a gold medal in the Olympics next year.___
A. optimistic
B. optional
C. outstanding
D. obvious
【单选题】
The director was critical _______________ the way we were doing the work.___
A. at
B. in
C. of
D. with
【单选题】
In a sudden _____________ of anger, the man tore up everything within reach.___
A. attack
B. burst
C. split
D. blast
