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【单选题】
M2M技术的核心理念是( ).
A. 智慧地球
B. 简单高效
C. 人工智能
D. 网络一切
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答案
D
解析
暂无解析
相关试题
【单选题】
毫米波的典型站距是( )。
A. 1000~5000米
B. 5~40米
C. 200~1000米
D. 40~200米
【单选题】
划分SUL频段的意义是:( )
A. 与5GHz搭配使用,补充下行覆盖范围
B. 增大上行数据传输速率
C. 与3.5GHz搭配使用,补充上行覆盖范围
D. 增大下行数据传输速率
【单选题】
5G单载波最大( )(<6GHz),单载波最大( )(>6GHz)
A. 50MHz,100MHz
B. 100MHz,200MHz
C. 100MHz,400MHz
D. 20MHz,100MHz
【单选题】
当以下 ( )设备的施主基站载波扩容时,应相应对其直放站进行扩容。
A. 宽带直放站
B. 频带选频直放站
C. 载波选频直放站
【单选题】
已知某个网络的掩码是 255.255.248.0,那么下面属于同一网段的是:( )。
A. 10.110.16.1和10.110.25.1
B. 10.33.23.2和 10.33.31.1
C. 10.52.57.34 和 10.52.62.2
D. 10.76.129.21和10.76.137.1
【单选题】
IPv6地址中不包括下列哪种类型的地址 ?( )
A. 广播地址
B. 组播地址
C. 单播地址
D. 任播地址
【单选题】
云计算的发展, 是以虚拟化技术为基础的 。( )
A. 正确
B. 错误
【单选题】
下述关于下行2*2 MIMO说法正确的是( )。
A. 2发是指UE端,2收也是指UE端
B. 2发是指eNodeB端,2收是指UE端
C. 2发是指eNodeB端,2收也是指eNodeB端。
D. 2发是指UE端,2收是指eNodeB端。
【单选题】
在对一个网络进行故障检测时,在同一个网络中ping另外一台主机,在该主机接收到ping请求后,会返回以下哪种类型的包?( )
A. ICMP响应应答
B. ICMP主机不可达
C. ICMP响应请求
D. ?ICMP端口不可达
【单选题】
在现阶段,LTE室内分布系统的信源以( )为主。
A. 分布式基站(BBU+RRU)或RRU
B. 干放
C. 光纤直放站
D. 无线直放站
【单选题】
PCI规划中需要尽量满足( )原则。
A. 模4
B. 模3
C. 模2
D. 模5
【单选题】
AMR-WB总共支持( )种模式。
A. 8
B. 7
C. 6
D. 9
【单选题】
LTE FDD中,A1事件是指( )。
A. 邻区好于服务小区一个偏置
B. 服务小区差于门限
C. 服务区小区好于门限
D. 服务小区差于门限1,且邻区好于门限2
【单选题】
LTE路测指标中的掉线率指标表述不正确的是:( )。
A. 掉线率指业务进行过程中发生业务异常中断的概率,即异常中断的次数与总业务进行次数之比。
B. 掉线指:在终端正常进行数据传送过程中数据传送发生异常中断,包括RRC连接异常中断、或数据速率降为0并持续5秒。
C. 掉线率=掉线次数/成功完成连接建立次数
D. 掉线是指在手机没主发Disconnect信令或没收到网络下发Disconnect/Release信令情况下,手机回到idle状态,则视为一次掉话。
【单选题】
从路测数据分析,UE收到/发出下述哪条消息表明RRC连接建立成功?( )
A. Random Access Request
B. rrcConnectionSetupComplete
C. rrcConnectionRequest
D. Random Access Response
【单选题】
LTE/ECP网络的去附着流程可由什么实体发起?( )
A. HSS
B. MME
C. UE
D. 以上都对
【单选题】
在MIMO模式,哪个因素对数据流量影响最大?( )
A. 发射和接收端的最小天线数目
B. 天线高度
C. 天线尺寸
D. 天线型号
【单选题】
关于小区搜索,以下描述错误的是( )
A. SSS位于5ms第一个子帧的最后一个符号
B. PSS位于DwPTS的第二个符号
C. 小区搜索过程是UE和小区取得时间和频率同步,并检测小区ID的过程
D. 根据PBCH的内容可以得到系统帧号和带宽信息
【单选题】
双路室分系统中可采用以下( )传输模式。
A. TM7
B. TM2
C. TM1
D. TM8
【单选题】
VoLTE由( )提供高质量的分组域承载。
A. IMS?
B. SGSN?
C. MME?
D. EPC?
【单选题】
LTE FDD中,A2事件是指( )。
A. 邻区好于服务小区一个偏置
B. 服务小区差于门限
C. 服务区小区好于门限
D. 服务小区差于门限1,且邻区好于门限2
【单选题】
LTE覆盖指标RS信号SINR的定义和解读,下列选项错误的是:( )。
A. 一般将SINR中的S也认为是有用信号功率,则SINR等效于CINR;
B. 邻区和服务小区的PCI模3不等,那么它们的RS就在频域上不重叠;
C. RSSINR是信号能量除以噪声的能量的比值;
D. RS-SINR与网络负荷相关,负荷越高RS-SINR值越低
【单选题】
UE接入LTE网络时,( )消息将分配的GUTI传递给用户。
A. Create Session Request
B. Attach Accept
C. Attach Complete
D. Create Session Response
【单选题】
TD-LTE系统中,VOLTE在子帧1:3的配置下每秒的理论容量是( )个用户
A. 180
B. 144
C. 288
D. 150
【单选题】
( )层向MAC层提供传输信道,传输信道的作用是描述信息是如何通过无线接口传输的。
A. RLC层
B. 数据链路层
C. 物理层
D. RRC层
【单选题】
VoLTE由( )提供高质量的分组域承载。
A. IMS
B. SGSN
C. MME
D. EPC
【单选题】
以下哪个参数用于LTE切换控制( )。
A. eventA3Offset
B. sNonintraSearch
C. sIntraSearch
D. ThreshXLow
【单选题】
初始附着时eNB收到UE发送的RRC Connection Request消息会建立( )
A. SRB2
B. SRB1
C. SRB0
D. DRB
【单选题】
VoLTE中承载视屏的是( )
A. QCI=5
B. QCI=2
C. QCI=8
D. QCI=9
E. QCI=1
【单选题】
下面哪些不是UE可执行的测量类型?( )
A. 与UTRA的系统间测量
B. 异频测量
C. 同频测量
D. 质差测量
【单选题】
LTE室内分布系统中用的最多的天线类型是:( )。
A. 智能天线
B. 壁挂天线
C. 全向吸顶天线
D. 栅格天线
【单选题】
对EPC中“永远在线”理解错误的是( )。
A. UE到UE或到服务器的端到端连接中的每一段连接或承载都随时存在
B. 任何时候发起到UE 的连接时,都可以依赖这些路由信息,随时找到UE建立连接
C. 网络中保存有UE的有效路由信息
D. 当长时间没有数据发送时,虽然空中接口的连接因节省资源而释放, 但核心网中的连接仍然存在
【单选题】
eNodeB处理S1接口控制面的协议是:( )。
A. S1AP/SCTP
B. SCTP/IP
C. RRC
D. GTPU/UDP
【单选题】
关于单站点验证测试的路线选择,下列说法错误的是( )
A. 测试路线尽量考虑当地的行车习惯,减少过红绿灯时的等待时间
B. 尽可能跑全待测基站周围所有主要街道
C. 测试路线尽量经过所有待测主服务小区的覆盖区域
D. 不需要考虑太多,直接开车进行测试即可
【单选题】
LTE载波聚合中的CIF具有( )比特。
A. 3
B. 2
C. 1
D. 4
【单选题】
LTE系统小区间干扰抑制技术主要有3种解决方式,不包括 ( )。
A. 小区间干扰随机化
B. 频分复用
C. 干扰协调与避免
D. 小区间干扰删除
【单选题】
NAS信令是指UE和( )之间的交互信令。
A. PGW
B. SGW
C. MME
D. ENodeB
【单选题】
在 ESRVCC 切换中,如果手机上报了二进制 NCC=111 BCC=001 ,那么在网管上需要配置该小区 2G 邻区的 BSIC 十进制为( )
A. 57
B. 55
C. 50
D. 60
【单选题】
S3和S4接口是基于什么协议实现的?( )
A. GTPv2
B. Radius
C. Diameter
D. GTPv1
【单选题】
室内建筑损耗是墙壁结构(钢.玻璃.砖等).楼层高度.建筑物相对于基站的走向.窗户区所占的百分比等的函数。以下说法不正确的是( )
A. 街道墙壁有铝的支架比没有铝的支架产生更小的衰减
B. 只在天花板加隔离的建筑物比天花板和内部墙壁都加隔离的建筑物产生的衰减小
C. 有窗户区域的损耗一般小于没有窗户区域的损耗
D. 建筑物内开阔地的损耗小于有走廊的墙壁区域的损耗
E. 位于市区的建筑平均穿透损耗大于郊区和偏远区
推荐试题
【单选题】
We can learn from the last paragraph that _______. ___
A. it is necessary to obtain as much
B. people should make the best use of the information
C. we should realize the importance of accumulating information
D. it is of vital importance to acquire needed information efficiently
【单选题】
The author thinks that people are _________. ___
A. satisfied with their appearance
B. concerned about appearance in old age
C. far from neglecting what is in fashion
D. reluctant to follow the trends in fashion
【单选题】
Fashion magazines and TV advertisements seem to link fashion to _________. ___
A. confidence in life
B. personal dress
C. individual hair style
D. personal future
【单选题】
Causes of fashions are _________. ___
A. uniform
B. varied
C. unknown
D. inexplicable
【单选题】
Present-day society is much freer and easier because it emphasizes _________. ___
A. uniformity
B. formality
C. informality
D. individuality
【单选题】
Which is the main idea of the last paragraph? ______________ ___
A. Care about appearance in formal situations.
B. Fashion in formal and informal situations.
C. Ignoring appearance in informal situations.
D. Ignoring appearance in all situations.
【单选题】
Permissive parents would ________. ___
A. let their children read any books they like to
B. not let their children see any films they like to
C. not let their children read any books without first checking their contents
D. let their children see the films with their first checking
【单选题】
The fact that parents check the contents of the book or the film for their children to read or see shows __________. ___
A. the necessity of censorship
B. that many books and films are bad
C. that children need their parents to help them understand more
D. that the parents are permissive
【单选题】
Which of the following statements is NOT true?____________ ___
A. Some adults can’t tell right from wrong.
B. Censorship is compared to the law because both of them perform good service to society as a whole.
C. Censors pay attention only to genuine works of art.
D. Censorship is necessary because many books, plays and films are far from being “works of art”.
【单选题】
What does the word “corrupt” in Para.4 mean?__________ ___
A. Make morally bad.
B. Hurt.
C. Injure.
D. Damage.
【单选题】
What would be the best title of this passage?_____________ ___
A. Permissive Parents and Responsible Parents.
B. Censorship and the Law.
C. Censors Value Artistic Merits .
D. Censorship Performs Good Service to Society.
【单选题】
Lie detectors are widely used in the United States because _____________. ___
A. they can help detect people’s emotional stress
B. they can help detect people's physiological changes
C. they can help find out whether a person is telling the truth or not
D. they can measure the subject’s electrical resistance
【单选题】
According to the passage, we know that Britain______________. ___
A. will adopt lie detectors widely
B. will adopt lie detectors on a smaller scale
C. adopt lie detectors
D. has not decided whether to adopt lie detectors or not
【单选题】
The tests themselves are by no means free from error..." (Line 1-2.Para.3) means ____________. ___
A. the tests definitely have no error
B. the tests sometimes make mistakes
C. the polygraphers do not make mistakes
D. the polygraphers can avoid error by using some techniques
【单选题】
Which of the following is true? ________________ ___
A. The tests are conducted by qualified polygraphers.
B. Innocent people may blush or stammer when questioned.
C. Guilty people can definitely be found out by answer questions
D. Guilty people may escape by refusing to answer questions.
【单选题】
What troubles lie detector researchers most is that _______________. ___
A. innocent people are convicted crimes
B. innocent people will learn to tell lies
C. lie detectors may cause industrial unrests
D. lie detectors are sometimes not dependable
【单选题】
In the passage the author's attitude towards "mixed-ability teaching" is _______. ___
A. critical
B. questioning
C. approving
D. objective
【单选题】
By "held back" (Line 1) the author means _____. ___
A. made to remain in the same classes
B. forced to study in the lower classes
C. drawn to their studies
D. prevented from advancing
【单选题】
The author argues that a teacher's chief concern should be the development of the student's _________. ___
A. personal qualities and social skills
B. total personality
C. learning ability and communicative skills
D. intellectual ability
【单选题】
Which of the following is NOT MENTIONED in the third paragraph? __________ ___
A. Group work gives pupils the opportunity to learn to work together with others.
B. Pupils also learn to develop their reasoning abilities.
C. Group work provides pupils with the opportunity to learn to be capable organizers.
D. Pupils also learn how to participate in teaching activities.
【单选题】
The author's purpose in writing this passage is to ______. ___
A. argue for teaching bright and not-so-bright pupils in the same class
B. recommend pair work and group work for classroom activities
C. offer advice on the proper use of the library
D. emphasize the importance of appropriate formal classroom teaching
【单选题】
According to the author, the deaths among youth are mainly caused by _____. ___
A. traffic accidents
B. smoking-related diseases
C. murder
D. all of these
【单选题】
Every day there are over_____high school students who will become regular smoker. ___
A. 75
B. 23
C. 30
D. 3000
【单选题】
By "dropout" the author means______. ___
A. students who failed the examination
B. students who left school
C. students who lost their way
D. students who were driven out of school
【单选题】
The reason for declining adolescent smoking is that ________. ___
A. NCI has taken effective measures
B. smoking is prevented among high school seniors
C. there are many smokers who have died of cancer
D. not stated
【单选题】
What is implied but not stated by the author is that ________. ___
A. smoking rates among youth have declined very little
B. there are now more female than male smokers among high school seniors
C. high smoking rates are due to the increase in wealth
D. smokers at high school are from low socio-economic backgrounds
【单选题】
According to the passage, which of the following is NOT a disadvantage of part time education? _______________ ___
A. It requires some break in one's career.
B. It tends to last too long for many people to complete a degree program.
C. It affects one's career.
D. It gives the student less time to share with the family.
【单选题】
Which of the following is NOT an advantage of distance learning? _________ ___
A. The student may choose his or her own pace.
B. The student may study at any time to his or her convenience.
C. They can pursue their chosen career while studying.
D. Their tutorial assistance comes through regular airmail, telephone, etc.
【单选题】
What benefit will distance learning program bring to a business? __________ ___
A. Recruitment of more talented people.
B. Good image of the business.
C. Better cooperation with universities.
D. Further training of employees and business growth.
【单选题】
Good distance learning program have the following characteristic EXCEPT______. ___
A. distance learning course is the same as students taking courses in campus
B. the degree should be same as on campus study
C. professor-student relationship is strictly one to one all through the course
D. includes subject evaluation tool
【单选题】
What benefit will distance learning bring to an employee of a business? ___________ ___
A. Professional growth.
B. Good relationship with the employer.
C. Good impression on the employer.
D. Higher salary.
【单选题】
In the first paragraph, what does "plastic money" (Line 6, Para.1) refer to? ______ ___
A. Dollars.
B. Online payment.
C. Credit cards.
D. Coins.
【单选题】
Which of the following is NOT true about credit cards? ____________ ___
A. Shopkeepers, among others, object to the use of credit cards because they add on the cost of the merchandise.
B. Credit card holders actually pay for their goods after the purchase has been completed.
C. The national company enjoys extensive growth because of the use of credit cards.
D. It has had the effect of increasing consumption.
【单选题】
What is the disadvantage of credit cards? _____________ ___
A. It may lead to the overgrowth of the national economy.
B. The delay in the payment of shopping goods may bring damage to shopkeepers' profits.
C. Some people may intentionally purchase goods that they cannot possibly afford.
D. Those who pay by cash at the purchase will have to pay for the cost added to the product as the interest charge of credit cards.
【单选题】
What is the main topic of the text? ________________ ___
A. Advantages and Disadvantages of Credit Cards.
B. Economic Growth Backed up by the Use of Credit Cards.
C. It can encourage great sums of consumption.
D. Credit Cards Make Life
E. asier.
【单选题】
The author's attitude towards credit card is.______________. ___
A. agreeable
B. neutral
C. humorous
D. oppositional
【单选题】
不含有割地内容的不平等条约是___。
A. 《南京条约》
B. 《北京条约》
C. 《马关条约》
D. 《辛丑条约》
【单选题】
在甲午战争后,严复翻译的《天演论》所宣传的重要思想是___。
A. “师夷长技以制夷”
B. “中学为体,西学为用”
C. “天下兴亡,匹夫有责”
D. “物竞天择,适者生存”
【单选题】
火烧圆明园发生在___期间。
A. 鸦片战争
B. 第二次鸦片战争
C. 甲午战争
D. 八国联军侵华战争
【单选题】
规定允许外国在中国办工厂的条约是___。
A. 《南京条约》
B. 《北京条约》
C. 《马关条约》
D. 《辛丑条约》
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