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During OSPF adjacency formation, in which state is a router in when an OSPF hello packet has been sent but bi－directional communication has not been achieved?()

题目
During OSPF adjacency formation, in which state is a router in when an OSPF hello packet has been sent but bi－directional communication has not been achieved?()

A.A

B.B

C.C

D.D

参考答案和解析
参考答案：A
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相似问题和答案

第1题：

Why()the old block of flats()demolished next month?

A、are…being

B、is…being

C、has…been

D、have…been


参考答案：B

第2题：

He () some difficulty () the book into Japanese.

A、is, to translate

B、has, to translate

C、is, in translating

D、has, in translating


参考答案：D

第3题：

How long() you() a member of the club?

A.have,,joined

B.have,,been

C.has,,joined

D.has,,been


参考答案：B

第4题：

If there () no air and water, all living creatures would die.

A、is

B、were

C、be

D、been


参考答案：B

第5题：

Whichfouraretrue?()

A.Has-arelationshipsshouldneverbeencapsulated.

B.Has-arelationshipsshouldbeimplementedusinginheritance.

C.Has-arelationshipscanbeimplementedusinginstancevariables.

D.Is-arelationshipscanbeimplementedusingtheextendskeyword.

E.Is-arelationshipscanbeimplementedusingtheimplementskeyword.

F.Anarrayoracollectioncanbeusedtoimplementaone-to-manyhas-arelationship.

G.TherelationshipbetweenMovieandActressisanexampleofanis-arelationship.


参考答案：C, D, E, F

第6题：

At last we got the letter we had long () expecting.

A. are

B. were

C. be

D. been


参考答案：D

第7题：

She ___here a minute ago.

A.is

B. was

C.be

D. been


正确答案：B

第8题：

I think the hatch covers ________ all fixed up by you

A.was

B.were

C.be

D.been


正确答案：B

第9题：

He is talking so much about America as if he ____ there.

A、had been

B、has been

C、was

D、been


正确答案：A

第10题：

一个OSPF路由器向其相邻路由器发送Hello数据包,如果接收到某一路由器返回的Hello数据包,则在这两个OSPF路由器之间建立起OSPF交互关系,这个过程在OSPF中被称为()。


答案：邻接关系adjacency

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