【单选题】
SDH信号在光纤上传输前需要经过扰码。下列字节中，不进行扰码的有 ( )___
A. 可以
B. 不可以
C. 必须
D. 按具体情况和需求
E.
F.
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相关试题
【单选题】
SDH中的基本传输模块为STM-1，传输速率约为（ ）___
A. 2Mbps
B. 8Mbps
C. 10Mbps
D. 155Mbps
E.
F.
【单选题】
SDH自动保护APS通路字节为（）___
A. A1、A2
B. D1-D12
C. K1、K2（B6-B8）
D. K1、K2（B1-B5）
E.
F.
【单选题】
SIP基本协议是定义在下列（ ）文档中的？___
A. RFC3261
B. RFC3261
C. RFC3264
D. RFC3525
E.
F.
【单选题】
ONU配置中的encrypt 1 enable代表什么意思.（ ）___
A. 开通使能
B. 应用使能
C. 禁止使能
D. 加密使能
E.
F.
【单选题】
烽火网管容灾方案主要推广不包括下面那一种（ ）___
A. 备份和快速恢复容灾方案
B. 1+1在线实时容灾方案
C. M:N在线容灾方案
D. 1:1容灾方案
E.
F.
【单选题】
IPPBX设备应支持终端订阅功能，可以向CM-IMS网络发起订阅流程，并支持接收CM-IMS网络发来的()消息___
A. A.register
B. B.notify
C. C.SIP
D. D.option
E.
F.
【单选题】
SIP协议注册服务器端口号默认为( )___
A. 2944
B. 2427
C. 5060
D. 3600
E.
F.
【单选题】
SNMP协议采集到的信息一般选择存放于数据库，SNMP服务器至少保存1个月的数据。( )___
【单选题】
SNMP协议是通过（ ）协议进行监控的一种网络协议，通过SNMP监控.___
A. IP
B. 路由
C. 交换机
D. 以太网
E.
F.
【单选题】
SNMP依赖于（）工作___
A. IP
B. ARP
C. TCP
D. UDP
E.
F.
【单选题】
STM-1 可装载（ ）路E1 信号。___
A. 4
B. 16
C. 63
D. 128
E.
F.
【单选题】
STM-16光接口的线路码型是（ ）码___
A. CMI
B. B、扰码后的NRZ
C. C、HDB3
D. D、扰码后的RZ
E.
F.
【单选题】
STM—4的标准速率是（ ）Kbit/s___
A. 622000
B. 6228000
C. 622080
D. 622028
E.
F.
【单选题】
STM-N帧结构分为（）___
A. 管理单元指针
B. 段开销
C. 净负荷
D. 以上全是
E.
F.
【单选题】
TCP、UDP属于OSI的第（）层___
A. 数据链路层
B. 网络层
C. 传输层
D. 会话层
E.
F.
【单选题】
复用段的误码块数是由（ ）字节回送给发送端的___
A. M0
B. B、M1
C. C、B2
D. D、K2
E.
F.
【单选题】
IPPBX应具有()力（VAD）以及对话音流进行静音压缩。应能产生舒适背景噪音。___
A. A.语音压缩
B. B.静音检测
C. C.回声抑制
D. D.视频通话
E.
F.
【单选题】
TFTP采用的传输层知名端口号为( )___
A. 67
B. 68
C. 69
D. 53
E.
F.
【单选题】
TMN的一般结构可以分为：（），信息结构和物理结构。___
A. 性能结构
B. 逻辑结构
C. 功能结构
D. 抽象结构
E.
F.
【单选题】
TRACERT过程中，一定不会用到的协议是（）。___
A. ICMP
B. ARP
C. TCP
D. UDP
E.
F.
【单选题】
UPS电源后备电池，接入到UPS的是___
A. 逆变器输出端
B. 整流器输入端
C. 逆变器输入端
D. 静态开关输入端
E.
F.
【单选题】
UPS又称为交流不间断供电系统，对于在线式UPS，当交流输入正常时，由 给系统供电___
A. 旁路
B. 逆变器
C. 电池
D. 市电
E.
F.
【单选题】
复用段以下的几种工作方式优先级别最高的是（）___
A. 强制倒换
B. 人工倒换
C. 自动倒换
D. 线路锁定模式
E.
F.
【单选题】
VC4 路径是基于（ ）路径的高阶VC-4 通道路径。___
A. MS
B. SPI
C. RS
D. 以上均不是
E.
F.
【单选题】
VLAN的划分不包括以下哪种方法（）___
A. 基于端口
B. 基于MAC地址
C. 基于物理位置
D. 基于协议
E.
F.
【单选题】
IPSEC使用哪种协议进行参数协商（ ）___
A. IKE
B. IDE
C. DES
D. SA
E.
F.
【单选题】
Vlan间通讯是用（ ）实现.___
A. 中继器
B. HUB
C. 路由器
D.
E.
F.
【单选题】
VOIP连接可以是桥接方式（ ）___
【单选题】
WDM系统最关键复用方式为（）___
A. 不同时隙携带不同信号
B. 不同频率携带不同信号
C. 不同信道码型携带不同信号
D. 不同偏振携带不同信号
E.
F.
【单选题】
Windows系统中，如何系统查看PC机的MAC地址与IP地址的映射？___
A. show mac
B. show arp
C. arp –c
D. arp –a
E.
F.
【单选题】
windows系统中清DNS缓存的命令是什么？___
A. ping
B. ipconfig /all
C. ipconfig /flushdns
D.
E.
F.
【单选题】
WLAN网络在进行多终端接入设计时，一般按照每个AP并发( )个用户进行设计。___
A. 10
B. 20
C. 30
D. 40
E.
F.
【单选题】
WLAN维护中，定时周期性重启AP的目的是什么___
A. 防止用户长时间在线
B. 预防AP间干扰
C. 预防AP吊死
D. 预防AP老化
E.
F.
【单选题】
各种PDH业务信号组合成STM-N的步骤是 ( )___
A. 映射 定位 复用
B. 定位 映射 复用
C. 定位 复用 映射
D. 复用 映射 定位
E.
F.
【单选题】
WLAN用户接入流程不包括( )___
A. DHCP地址分配
B. 计费
C. 强制Portal和认证
D. 短信下发
E.
F.
【单选题】
Word 2003中无法实现的操作是___
A. 在页眉中插入日期
B. 建立奇偶页内容不同的页眉
C. 在页眉中插入分隔符
D. 建立每页不同的页眉
E.
F.
【单选题】
Word 的查找功能使用的快捷键是___
A. ctrl+a
B. ctrl+v
C. ctrl+f
D. ctrl+z
E.
F.
【单选题】
IPV6地址长度为（）Bits。___
A. 32
B. 64
C. 128
D. 256
E.
F.
【单选题】
Word版本之间保持向下兼容性，即___
A. 高版本Word生成的文档可在低版本Word中进行处理
B. 低版本Word生成的文档可在高版本Word中进行处理
C. 只能在同一版本下才能进行处理
D. 不论版本高低均能进行处理
E.
F.
【单选题】
ZXCTN6100设备最大可以提供（ ）FE接口___
A. 8个
B. 12个
C. 16个
D. 32个
E.
F.
推荐试题
【单选题】
What are you majoring in?___
A. In a university.
B. Very hard.
C. Mathematics.
D. At nine in the morning.
【单选题】
Are you going on holiday for a long time?___
A. It was a long time.
B. Two weeks ago.
C. No. Only a couple of days.
D. Not long time ago.
【单选题】
Is Mary there?___
A. Speaking.
B. I'm not Mary.
C. Who are you?
D. Mary is well today.
【单选题】
What day is today?___
A. It's March 6.
B. It's a fine day today.
C. It's March.
D. It's Monday.
【单选题】
Is that seat taken?___
A. Please don't worry.
B. I don't think so.
C. Why not?
D. It's very nice.
【单选题】
Thank you for calling.___
A. Don’t mention it.
B. That's fine.
C. Nice talking to you.
D. Call back again.
【单选题】
How are you getting on today?___
A. Very well.
B. How do you do?
C. I'm a doctor.
D. Nice to have known you.
【单选题】
How's your family?___
A. Thanks all the same.
B. Thanks for calling.
C. Not too bad.
D. Don't mention it.
【单选题】
- How is it that you are late for class again?___
A. Because I missed the bus
B. By bus and then on foot
C. Yes, it is quite wrong
D. It is far from school
【单选题】
- Excuse me. Could you spare me a few minutes? - ___
A. Of course.
B. Of course not.
C. I am sorry to hear that.D.Yes. I'm busy now.
【单选题】
- It's very thoughtful of you to give me a ride. ___
A. It's my pleasure.
B. Take it easy.
C. Sure.
D. Never mind.
【单选题】
- This is heavy! What's in it? ___
A. I think you don't like it.
B. My new computer. I just bought it.
C. I'm glad you're here.
D. Are you really interested in it?
【单选题】
___ I'd like to place an order please.
A. Can I help you?
B. I can help you.
C. What are you doing?
D. Why are you doing?
【单选题】
- Do you know the girl over there?___
A. How can I know?
B. Yes, I remember it now.
C. It's Sam, my teacher's daughter.
D. She is a good girl.
【单选题】
- Shall we go out for dinner tonight?____
A. No, you can't.
B. Yes, please.
C. Thank you, I don't want to.
D. Sorry, I have a report to finish.
【单选题】
- I think the reference book（参考书）is very helpful.____
A. Good idea.
B. So do I.
C. With pleasure.
D. No problem.
【单选题】
- I wish you success in your career.____
A. You are welcome.
B. I think so.
C. Yes, please.
D. The same to you.
【单选题】
- Would you like to come over tonight?____
A. Yes, last night.
B. Yes, over there.
C. Sure, I'd love to.
D. Yeah, I liked it too.
【单选题】
- How do I transfer calls? ____
A. Do as you like.
B. It is a bit difficult.
C. Let me show you.
D. Not at all.
【单选题】
- Thanks for inviting me, John, but I've already made other plans. ____. Maybe another time.
A. I hope you enjoy it
B. That's good
C. Oh! I'm sorry to hear that
D. Great! I really had a good time
【单选题】
- Thanks for the lovely party and the delicious food. ____
A. No, thanks.
B. Never mind.
C. Thank you for coming.D.That's all right.
【单选题】
- Why didn't you tell me? ____
A. Sorry, I forgot.
B. I'm sorry you should wait.
C. I don't know.
D. I'd love to.
【单选题】
- What do you plan to do after the exam? ____ How about you?
A. I hate taking exams.
B. I like making plans.
C. Nothing special.
D. I've changed my mind.
【单选题】
- Tom told me that you collect stamps. ____
A. What do you mean?
B. I don't think so.
C. Why did he tell you?
D. Yes, I do. Do you?
【单选题】
- This is a challenging job. Who wants it？____
A. I'll take it.
B. It's a good idea.
C. You bet!
D. No sweat!
【单选题】
- I'm taking my driving test tomorrow. ___!
A. Cheers
B. Good luck
C. Come on
D. Congratulations
【单选题】
- ABC Company, may I help you? ____
A. I am Jack. May I speak to Miss Jenny?
B. This is Jack speaking. May I speak to Miss Jenny?
C. This is Jack speaking. Can I find Miss Jenny?
D. I am Jack. Can I find Miss Jenny?
【单选题】
- You have won the football game. Congratulations! ____
A. We are really lucky.
B. No one else could do it.
C. Oh, not really.
D. It's nice of you to say so.
【单选题】
- Excuse me, when will the 17:15 train arrive____
A. I don't tell you.
B. It's been delayed one hour.
C. You have to be patient.
D. Don't ask me.
【单选题】
- Is John there?____
A. Speaking.
B. I'm not Mary.
C. Who are you?
D. Mary is well today.
【单选题】
- Would you like to join us for Sunday dinner____
A. It's nice of you to invite me.
B. How about the food?
C. I like onion soup.
D. I'm sorry I missed the fun last time.
【单选题】
- Could you tell me where the nearest parking lot is?____
A. Don't ask me.
B. Parking is very difficult.
C. Sorry, I'm a stranger here.
D. Sorry, you can't park here.
【单选题】
- Sorry, ___
A. here you are.
B. take it.
C. it's taken.
D. never mind.
【单选题】
－What's this in English? ____
A. It's a map.
B. That is a map.
C. Yes, it's a map.
D. No, it isn't.
【单选题】
- I hear you got through your exam. Congratulations!____
A. No. I didn't do well enough.
B. Who told you that?
C. Thanks.
D. Yes, I got a good mark.
【单选题】
- Don't forget to come to my party this evening!___
A. I can't.
B. I won't.
C. I don't.
D. I will.
【单选题】
- Jim, please don't put your head out of the window on the bus. It's dangerous!___
A. Good idea.
B. Sorry, I won't do it again.
C. It doesn't matter.
D. It's good.
【单选题】
-How about going fishing?___, I have no patience for that.
A. Excuse me
B. Sorry
C. Pardon
D. Apologize
【单选题】
- Thanks for the lovely and delicious food______.
A. No thanks
B. Never mind
C. All right
D. My pleasure
【单选题】
－ Haven't seen you for ages. Let's have a get-together next week._____
A. Great idea.
B. Welcome!
C. Yes, of course.
D. No, thanks.
