【判断题】
IP城域网是CMNET省网在城域内的延伸，IP城域网在网络层次上包括核心层和业务接入控制层。
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相关试题
【判断题】
IP地址由网络号和主机号组成，B类地址的主机号部分有16比特，能容纳的最大主机数为65534
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IP头中的生存期字段用于确定一个TCP/IP包未交付前可在网络上移动的时间。
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IS-IS协议和OSPF协议非常类似，都是链路状态路由选择协议。
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ITU-T建议规定，复用段倒换时间不能大于50MS
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KPI指标集规定，GPON接入网上行口带宽利用率=OLT上行口发送速率／OLT上行口物理带宽X100%
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MA5610可以支持4个插槽，最大可以支持64个LAN端口或256个语音用户端口。
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MA5616的电源板类型中，PAIA属于直流输入电源板。
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MA5620\MA5680T\MA5616都可以称作ONU。
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MA5620E和MA5626E的区别在区前者不支持POTS接口，后者支持POTS接口。所以现在我们用的最多的是MA5626E。
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MA5620G\MA5680T\MA5616都可以称作ONU
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MA5620G可以将LAN端口的隔离取消，从而实现交换机的功能，命令方式为undo isolate all。
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MA5620G与IMSY接时，网管上名称可以与资源系统不一致
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MA5620G与IMSY接时，网管上名称可以与资源系统不一致
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MA5620的下行LAN端口中，其中0/1/1是维护端口，直接使用网线配置与设备同段IP即可访问MA5620.
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MA5680T 有两种框， 21’英寸和19’英寸,两种框的不同在于槽位不同，19’比21’少两个槽位。
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MA5680TETSI机框共支持16个槽位的业务单板，每单板背板带宽10GE。
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MA5680T新发货的GPON单板GPBD可以支持class C+，该类型的光模块将比class B+的光模块发光更强，因此可以最大支持1：128的分光比。
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MS-AIS告警产生时，不一定都下插全“1”信号。
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MSTP传输网可直接提供带宽动态可选的以太网专线（RJ45接口）。
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MSTP的全称为多业务传输平台，是新一代传输系统平台，它继承了传统SDH设备YTDM业务的支持，同时又具有Y动态ATM、IP业务传输的支持
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MSTP设备上，以太网单板Y接入的以太网信号首先进行二层交换处理，再使用相应的CAR策略进行流分类，然后使用GFP/HDLC/ML-PPP等协议将以太网报文封装到SDH信号中进行传输。
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OLT R62支持模板模式和离散模式，切换两种模式将会导致数据丢失。
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OLT 模板模式的配置中，其线路模板的定义的参数主要是定义待绑定设备的能力集。
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OLT设备仅支持带内网管，不支持带外网管
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OLT设备能实现Y用户的以太网数据进行缓存。
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ONU不接地会导致设备漏电，但不会影响业务正常使用。
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ONU具有出局智能路由功能,且可以为用户提供中继
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ONU设备的CPU占用率反映MDU设备的硬件资源占用状况，正常运行期间不超过80%为宜。
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ONU设备的用户端口速率与用户上网方式有关，最大应能达到承诺带宽*0.8（以太网效率）。
【判断题】
ONU设备在机箱安装时应在合适位置，两端不能紧贴柜壁，以防影响设备散热
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ONU提供的数据业务属于窄带数据业务。
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ONU下接的电脑不能上网一定是由于GPON数据配置出N引起
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ONU下接的电脑不能上网一定是由于GPON数据配置出N引起
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OPCOM3500E设备HT-6FE24E板卡可以将24个远端的RC952-FXE1汇聚到局端的6个前面板以太口上，
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OPCOM3500E设备的网管盘如果损坏（或设备不在位），那么所有的业务将会中断。
推荐试题
【单选题】
Tom is a book lover. ______ likes reading very much.
A. He B. She C. You D. It
【单选题】
—May I listen to the music here, Mr. White?
—Sorry, you’d better it like that．
A. not to do B. not do to
C. dont do D. not do
【单选题】
3.—Did you have a good time at Lauras birthday party?
— Yes, indeed. Its several years ________ I enjoyed myself so much.
A. when B. before C. since D. that
【单选题】
4. —___________ is the Summer Palace from here?
About three kilometers away. You can take the No. 35 bus.
A. How long B. How far C. How often D. How much
【单选题】
5. I was looking for a birthday gift for my mother, but I couldnt find ______ suitable.
A. anything B. something C. nothing D. everything
【单选题】
6. A friend of my ____ and I are going to visit_______ next week．
A. father; Browns B. father's; Browns
C. father; the Browns D. father's; the Browns
【单选题】
7. She ______ very hard since she came to our school.
A. studies B. has studied C. is studying D. studied
【单选题】
8. — Who will send you to the new school, your mom or your dad?
— _______. Ill go there by myself.
A. Both B. Either C. Neither D. None
【单选题】
9.—Well do what we can ____English well this term．
—It’s high time for you to work hard．
A. study B．to study C. be studied D. be studying
【单选题】
10. —I’m going to Flower Bookstore. Could you tell me ______?
— Sorry, I don’t know. I’m new here.
A. where it is B. where was it C. where is it D. where it was
【单选题】
11. How do you like the dishes, Eric?
— Fantastic! Nothing tastes ________.
A. nice B. better C. terrible D. worse
【单选题】
12. ______ Lin Feng has to work late, she always wears a smile on her face.
A. Because B. If C. Until D. Though
【单选题】
13.You can save money _______ you buy cheaper things.
A. before B. unless C. if D. until
【单选题】
14. We will have a _________ holiday after the exam．
A. two-month B. two month’s C. two month D. two-months
【单选题】
15. —We will build an underground in Xuzhou before 2015．
— Wow, _______! Will it pass our place?
A. what an excited news B. how excited the news is
C. what exciting news D. how exciting
【单选题】
16. — Emily, here’s a dictionary．I hope it will help you in some way．
— Thank you．It’s ________ what I need．
A. almost B. still C. only D. just
【单选题】
17. —Oh．I’m hungry．Mum, can I have the hamburger on the plate?
—No．It tastes ．
A. terribly B. terrible C. good D. well
【单选题】
18. —We can invite our teachers to the farewell party next Saturday.
—Yes, ______? I’ll call them at once.
A. what for B. what C. why not D. why
【单选题】
19.You can ________ ask the old man to move away to any other place because he has lived ________ here for at least sixty years．
A. hardly; alone B. hard; alone
C. hardly; lonely D. hardly; lonely
【单选题】
20.—I’m going back to see my grandparents this weekend．
—________．
A. It’s very nice of you B. You’d better hurry
C. Say goodbye to them D. Give my best wishes to them
【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A．England． B．France． C．America． D．China．
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
C．He realizes his love for the rose and he goes back to his planet．
D．He discovers interesting things such as a snake, other roses and a fox
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
A．the adult world B．the planet B -612
C．a rose and a fox D．the adventure of a young prince
【单选题】
( ) 29. What is the writer's main purpose（目的）in writing this passage？
A．To tell the readers his life story．
B．To tell people what kind of person his father was．
C．To tell the readers what present he got from his father．
D． To let people know how poor he was．
【单选题】
( ) 30. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
【单选题】
( ) 31. What would someone learn from this passage？
A．How to live by oneself． B．How to stand on one's own feet．
C．What a good father should do． D．What the self-important is like．
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage？
A．闲暇时光 B．学费 C．精神空虚 D．经济不足
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
