On what kinds of networks does OSPF elect a backup designated router?（）A、Point-to-point and point-to-multipoint networksB、Nonbroadcast and broadcast multipoint multicastingC、Point-to-point and multi-access broadcastingD、Point-to-multipoint and multi-acces

题目

On what kinds of networks does OSPF elect a backup designated router?（）

A、Point-to-point and point-to-multipoint networks
B、Nonbroadcast and broadcast multipoint multicasting
C、Point-to-point and multi-access broadcasting
D、Point-to-multipoint and multi-access broadcasting
E、Nonbroadcast and broadcast multi-access

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第1题：

Refer to the exhibits. You are verifying your OSPF implementation, and it does not seem to be functioning properly. What can you conclude from the exhibit and the show running - configuration command output? （）

A. The OSPF areas are not configured correctly.

B. The wildcard masks for the 10.x .x.x networks are incorrect.

C. The 172.16.x.x networks need to be connected to area 0 using virtual links.

D. The 172.16.x.x networks are discontiguous. OSPF is automatically summarizing them to 172.16.0.0/16 and data is being "black holed."

E. There is not enough information to make a determination.

参考答案：A

第2题：

Recently,telecommunication carriers has been building ( ) core networks in order to effectively support various kinds of fixed and mobile broadband services.

A. NGN B.social network C. mobile network D. AII -IP

正确答案：A

第3题：

What does ‘knowing a word’ mean?

参考答案：Knowing a word means that you know word meaning, word use, word ation and word grammar.

第4题：

I just wonder( )that makes him so excited.

A.why it does
B.what he does
C.how it is
D.what it is

答案：D

解析：

考查强调句型。本题题干相当于I just wonder what makes him so excited.的意义，所以该题实际上为强调句型的特殊疑问句式。what 为宾语从句的连接词，且在从句中作主语。故本题选D。句意：我想知道什么使他如此兴奋。

第5题：

Which of the following does NOT show the proper rhythmic pattern of the sentence

A.'What' s the 'matter

B.The 'sweater is 'beautiful.

C.He 'started 'counting it.

D.'He usually 'gets up at 'six o 'clock.

答案：D

解析：

考查句子重读。一般来说，在句子中需重读的词都是实词，比如，名词、动词(除be动词和助动词外)、形容词、副词、指示代词等；不重读的多为虚词，比如，冠词、连词、介词、人称代词、相互代词等。但这也不是绝对的．一个词在句中重读与否，同它在句中所起的意义和作用有密切的关系。D项中的he为人称代词．属于虚词．不重读。故选D。

第6题：

On what kinds of networks does OSPF elect a backup designated router?()

A. Point-to-point

B. Point to multipoint

C. Broadcast

D. Non-broadcast multi-access

参考答案：C, D

第7题：

Which of the following may illustrate the difference between "competence" and__________ "performance"?

A．What a person "knows" and what he/she "does".
B．What a person "can do" and what he/she "does".
C．What a person "does" and what he/she "knows".
D．What a person "does" and what he/she "can do".

答案：A

解析：

考查语言学知识。competence“语言能力”，指语言使用者对于语言规则系统的潜在意识；performance“语言运用”，指在具体场景中语言的实际运用，二者对应的分别为“knows”和“does”。故选A。

第8题：

What is used to segment larger networks into smaller networks?()

A.supernet masks

B.subnet masks

C.wildcard masks

D.route filtering

参考答案：B

第9题：

Does the supplier of material ____ all kinds of risks for transportation ____ sea?

A. take;on
B. cover;by
C. receive;by
D. overtake;at

答案：B

解析：

首先根据第二个空，可排除A、D。by+抽象化的具体名词，泛指乘坐某种交通工具，如：by sea 表示“乘船；海运”。Cover“包括，涉及；给……保险”，此处意为“材料供应商是否担保海运的各种风险？”，故选B。

第10题：

What time does our plane leave?（）

A、Saturday.
B、Eight o'clock in the morning
C、Last week.
D、This week

正确答案:B

On what kinds of networks does O

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