【多选题】
ONU设备资源模型中网元状态为枚举类型，可以填入（ ）___
A. 在用
B. 工程
C. 退网
D. 备用
E.
F.
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相关试题
【多选题】
OSN设备判断光纤是否连接正确的方法有___
A. 关断激光器
B. 插入MS_RDI告警
C. 修改J1字节
D. 查询ECC路由
E.
F.
【多选题】
PBX接入的特点，不正确的是（ ）___
A. PBX主要提供大容量语音接入，一般设置在用户机房
B. PBX本身带有交换功能，能独立完成内部通话、计费、呼转等功能
C. 由2M数字中继线承载，每条数字中继可提供32线话路
D. 集团短号功能由PBX自身实现，即使与上层交换断开集团内短号依然可以互拨
E.
F.
【多选题】
PON网络中光纤的工作波长有哪些 ___
A. 1310nm
B. 850nm
C. 1900nm
D. 1550nm
E.
F.
【多选题】
PON网络中光纤的工作波长有哪些( )___
A. 1550nm
B. 1900nm
C. 850nm
D. 1310nm
E.
F.
【多选题】
PPP协议支持的验证方式有：___
A. PAP
B. MD5
C. CHAP
D. SAP
E.
F.
【多选题】
PTN 950可以安装在（ ）___
A. ETSI300mm深机柜中
B. ETSI 600mm深机柜中
C. 19英寸450mm深机柜中
D. 19英寸600mm深机柜中
E.
F.
【多选题】
PTN支持业务接入包括（ ）___
A. CES业务仿真
B. ATM业务仿真
C. 以太业务
D. 射频业务
E.
F.
【多选题】
RIP路由协议靠哪种手段解决路由环问题（ ）。___
A. 触发更新
B. 毒性逆转
C. 水平分割
D. 以上均不是
E.
F.
【多选题】
SDH设备的光放大单元有几种（ ）。___
A. 功率放大器
B. 预置放大器
C. 线路放大器
D. 交叉放大器
E.
F.
【多选题】
SDH与PDH相比而言，有以下特点（）___
A. 光接口标准化
B. 网管能力强
C. 信道利用率高
D. 简化复用/解复用技术
E.
F.
【多选题】
TCP和UDP的共同特征是：（）___
A. 提供可靠性
B. 使用端口号
C. 面向连接的协议
D. 传输层协议
E.
F.
【多选题】
TCP协议主要解决以下问题（ ）___
A. 恢复数据报的顺序
B. 丢弃重复的数据报
C. 恢复丢失的数据报
D. 端点之间的连接
E.
F.
【多选题】
telnet服务使用TCP端口号为____，HTTP使用TCP端口号为____，TFTP端口号为_______
A. 23
B. 80
C. 69
D.
E.
F.
【多选题】
T-MPLS 体系结构包括三个层面，包括（ ）___
A. 数据平面
B. 管理平面
C. 转发平面
D. 控制平面
E.
F.
【多选题】
TN系统有（ ）三种系统.___
A. T N—S系统
B. T N—C—s系统
C. T N—C系统
D. TT
E.
F.
【多选题】
UPS“机内过热”，找出所有可能的原因.（ ）___
A. 热继电器连接线松脱
B. 散热风道堵塞
C. 风扇损坏
D. 环境温度高
E.
F.
【多选题】
UPS按工作原理的不同UPS可以分为（ ）___
A. 工频机
B. 高频机
C. 低频机
D. 射频机
E.
F.
【多选题】
UPS按供电体制分为（ ）___
A. 单进单出
B. 三进三出
C. 三进单出
D. 两进单出
E.
F.
【多选题】
UPS电池备用时间不足的原因为（ ）___
A. UPS内部电池未充满
B. UPS过载
C. 电池虚弱损坏
D. 充电器故障或其它原因
E.
F.
【多选题】
UPS电源的保护功能主要包括( )及输出过欠压保护等。___
A. 输出短路保护
B. 输出过载保护
C. 过温保护
D. 电池欠压保护
E.
F.
【多选题】
UPS电源供电时间长短主要取决于___
A. 电压
B. 电池容量
C. 负载电流
D. 频率
E.
F.
【多选题】
UPS风扇故障可能后导致（ ）___
A. 逆变器高温报警
B. 转旁路工作
C. 没有影响
D. 逆变器关机
E.
F.
【多选题】
UPS日常例行检查内容包括（ ）___
A. 检查风扇
B. 异常噪音
C. 面板指示灯
D. 电池自检
E.
F.
【多选题】
VLAN的主要作用有（ ）___
A. 保证网络安全
B. 抑制广播风暴
C. 简化网络管理
D. 提高网络设计灵活性
E.
F.
【多选题】
VLAN拓扑中路由器提供什么功能（ ）___
A. 广播过滤
B. 安全
C. 通信流量管理
D. 以上都是
E.
F.
【多选题】
ZXCTN 6000设备在安装、维护等操作时，应遵守以下（ ）事项.___
A. 电压警告：设备采用-48 V直流供电，人体直接接触电源接头或供电设备内部，可导致人员伤害
B. 钻孔警告：严禁自行在机柜上钻孔。不符合要求的钻孔会损坏机柜内部的接线、电缆，钻孔所产生的金属屑进入机柜会导致单板短路
C. 静电警告：人体产生的静电会损坏电路板上的静电敏感元器件，如大规模集成电路
D. 腐蚀警告：严禁在设备附近对具有腐蚀性的液体或气体进行操作
E.
F.
【多选题】
ZXCTN6300/6200设备在开通MSP保护时，需要启用APS协议的是（ ）___
A. 1+1单向复用段保护
B. 1：1双向复用段保护
C. 1+1双向复用段保护
D. 1：1单向复用段保护
E.
F.
【多选题】
安全标准：任何工程完工后必须满足设备安全、操作人员的人生安全及第三者的人生安全，否则工程为不合格工程，主要有关内容如下（ ）___
A. 三线交越保护
B. 光缆过路高度
C. 通信管道埋深
D. 系统性能
E.
F.
【多选题】
安全告警分类___
A. 恶意软件类告警
B. 网络攻击类告警
C. 配置违规类告警
D. 风险漏洞类告警
E.
F.
【多选题】
安全技能教育的内容有（ ）___
A. 本岗位使用的设备、安全防护装置的构造、性能、作用、实际操作技能。
B. 处理意外事故能力和紧急自救、互救技能。
C. 使用劳动防护用品、用具的技能
D. 专业故障处理技能
E.
F.
【多选题】
安全生产检查的方法有哪些（ ）___
A. 定期安全生产检查
B. 专业安全生产检查
C. 特殊性安全生产检查
D. 网络隐患现场检查
E.
F.
【多选题】
安全生产事故中调查组的职责有（ ）___
A. 查明事故发生的原因、过程和人员伤亡、经济损失情况。
B. 确定事故责任者。
C. 提出事故处理意见和防范措施建议
D. 写出事故调查报告
E.
F.
【多选题】
安装光衰减器的目的是（ ）。___
A. 防止光功率过载
B. 保护接收光模块
C. 提高信噪比
D. 降低了接光板收灵敏度
E.
F.
【多选题】
按工作原理不同，UPS分为（ ）___
A. 后备式
B. 三端口
C. 在线式
D. 在线互动式
E.
F.
【多选题】
按照目前技术的发展，PON的定义是（ ）___
A. 基于以太网的无源光网络
B. 一种基于P2MP拓扑的技术
C. 无源光网络
D. 基于TDM技术的无源光网络
E.
F.
【多选题】
暗管穿缆常用工具有（ ）___
A. 钢制穿管器
B. 塑料穿管器
C. 剪刀
D. 润滑剂
E.
F.
【多选题】
包过滤防火墙有哪些缺点()___
A. 定义复杂，容易出现因配置不当带来问题
B. 配置过滤策略过多会引起性能的急剧下降
C. 配置简单
D. 性能开销小，处理速度较快
E.
F.
【多选题】
变压器油的主要作用是（ ）___
A. 使金属得到防腐
B. 润滑
C. 绝缘
D. 散热
E.
F.
【多选题】
不同波长中的光信号承载的数字信号可以是（ ）。___
A. 相同速率
B. 不同数据格式
C. 不同速率
D. 相同数据格式
E.
F.
【多选题】
查询语音业务日志，使用到（ ）命令___
A. #ont/system/log>show mal
B. #ont/system/log>show sal
C. #ont/system/log>show mec
D. #ont/system/log>show voip
E.
F.
推荐试题
【单选题】
When the driver heard that there was a bomb on the bus, he immediately ___ to the side of the highway and radioed the police.
A. put out
B. took off
C. pulled over
D. slipped off
【单选题】
She was very ___ to become a manager in our customers’ office, but finally accepted our offer.
A. eager
B. intelligent
C. ridiculous
D. reluctant
【单选题】
In the race, it looked as if he would be the first, but then another young man who was close behind him put on speed and ___ by a few seconds.
A. beat him for it
B. beat him to it
C. beat him up
D. beat it to him
【单选题】
It is really helpful to have someone like you that we can ___ and count on during difficult times.
A. lean on
B. get to
C. hang on
D. get by
【单选题】
Women have a greater ability to ___ names with faces than men do, and they are also better at recalling lists.
A. associate
B. compare
C. engage
D. involve
【单选题】
He was always ready to help others and managed to ___ his friends ____being hurt.
A. expose … to
B. confine …to
C. restrict … from
D. shield … from
【单选题】
Older people are less likely to be ___ their negative emotions (情绪) and more likely to focus on the positive.
A. reserved for
B. caught up in
C. beat up to
D. counted on
【单选题】
I don’t have any bandage, so I have to ___ pressure to the wound to keep the bleeding down.
A. apply
B. involve
C. fulfill
D. establish
【单选题】
It is important that whichever candidate (候选人) is picked the loser should accept the defeat ___.
A. in advance
B. with great pride
C. with good grace
D. in large part
【单选题】
___ that new homes cost more than older homes, but that is not true across the country anymore.
A. It used to be
B. It is used to be
C. It used to being
D. It is used to being
【单选题】
The boss ___ his employees to work longer hours as the company is dreadfully short of staff at present.
A. called on
B. signed up
C. cared for
D. set up
【单选题】
The president’s visit and ___ discussions led to a plan that aimed to improve the trade relations between the two countries.
A. emerging
B. subsequent
C. consequent
D. Submerging
【单选题】
The author ___ his general idea mainly through statistics and results obtained from a survey (调查) about auto customer services in the United States.
A. assumes
B. engages
C. illustrates
D. represents
【单选题】
People in this town starved, several buildings were bombed and crime ___ because you had to steal to eat.
A. eroded
B. reflected
C. released
D. soared
【单选题】
Olympic recognition for bodybuilding (健美) remains ___ since some argue that bodybuilding is not a sport because the actual contest does not involve the same sort of efforts as “real” sports.
A. controversial
B. conventional
C. characteristic
D. influential
【单选题】
Tom tried to justify his absence from the meeting by ___ that he had been ill that day.
A. admitting
B. advocating
C. claiming
D. citing
【单选题】
___ the huge financial benefits, biological companies have been rushing to set up laboratories and new research projects.
A. Aware
B. Aware of
C. Not aware
D. Not aware of
【单选题】
Unfortunately, ___ lack of funds, the studies he began just two months ago, had to be ended early.
A. out of
B. in addition to
C. owing to
D. to begin with
【单选题】
With a good command of English, he soon got ___ to working with British people.
A. accustomed
B. consistent
C. relevant
D. responsible
【单选题】
What needs to be ___ here is that language and culture interact, and that understanding of one requires understanding of the other.
A. altered
B. stressed
C. aroused
D. committed
【单选题】
Policies and organizations must be created to meet workers’ hopes, and to ___ new problems that inevitably arise between workers and managers.
A. compromise
B. ensure
C. undermine
D. resolve
【单选题】
To keep the wheels of industry turning, we produce consumer goods in endless quantities, and, in the process, are rapidly ___ our natural resources.
A. ignoring
B. collapsing
C. enduring
D. exhausting
【单选题】
As a person who loves peace, he is committed ___ realizing peace between countries.
A. of
B. about
C. for
D. to
【单选题】
Learning how to use chopsticks is easy for me, ___ learning how to conduct myself at the table is quite difficult.
A. whereas
B. however
C. therefore
D. besides
【单选题】
___ that the patient smokes 50 cigarettes a day, it would be reasonable to assume there is some lung damage.
A. To give
B. Giving
C. Given
D. Having given
【单选题】
Kenyan (肯尼亚的) women tend to vote for those who could provide them ___ the necessary food to live on.
A. of
B. with
C. for
D. about
【单选题】
___ all obstacles and failures, the scientist continued doing his experiments day and night.
A. In spite of
B. In contrast to
C. As a matter of
D. As a result of
【单选题】
I’m willing to ___ that a larger car would have cost more, but I still think we should have bought one.
A. withdraw
B. indicate
C. abandon
D. concede
【单选题】
Manufacturing (制造) companies spend millions of pounds on advertisements, trying to ___ customers that their products are better than those of other companies.
A. confine
B. convince
C. depress
D. reconcile
【单选题】
He is not the right person for the project: he is not very technically minded and ___, he does not have the sense of responsibility.
A. instead
B. yet
C. furthermore
D. nevertheless
【单选题】
Death rates declined in many places, partly because of the ___ in hunger.
A. decrease
B. myth
C. obstacle
D. burden
【单选题】
In deciding whether or not a situation is safe, pilots must be taught to assume that the worst will happen, and then to ___ whether there is a risk or not.
A. absorb
B. apply
C. assess
D. occupy
【单选题】
The worker was not worried as he knew that if he gave up the job, there would be ___ opportunities for him to work somewhere else.
A. formative
B. marginal
C. vigorous
D. numerous
【单选题】
The research shows the region might ___ overheating (经济过热), but the policymakers so far appear to be relatively relaxed about the future of the economy.
A. catch a glimpse of
B. be at risk of
C. take a toll on
D. be free from
【单选题】
Measures have been taken to ensure that no student will have to ___ of college for economic reasons.
A. lay out
B. cancel out
C. drop out
D. stand out
【单选题】
Stress that is not treated can lead to significant medical illnesses, which ___ can lead to greater stress and even depression (抑郁症).
A. after all
B. in turn
C. on the contrary
D. at least
【单选题】
Narcissism (自恋) has its benefits in terms of self-belief and confidence, but it also tends to be ___ risky decision-making.
A. associated with
B. contrasted with
C. reserved for
D. relieved of
【单选题】
When Tom saw his doctor again, she suggested that maybe a more substantial lunch, like a sandwich, might ___ his desire to have snacks in the afternoon.
A. count on
B. cut back on
C. hold on to
D. contribute to
【单选题】
You shouldn’t ___ – let your children make their own decisions.
A. interact
B. abuse
C. startle
D. interfere
【单选题】
This is a huge and difficult project and if you take it up, you ___ many difficulties.
A. like to encounter
B. like encountering
C. are likely to encounter
D. are like to encounter
