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【单选题】

A company is about to install a second network connect on with a new ISP. Which of the followingrouting protocols is the BEST choice?（）

A、IS-IS

B、BGP

C、OSPF

D、RIP

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第1题
[单选题] Information about the current foreign markets （） very important to our company.

A、is  B、was  C、are  D、were  

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第2题
[单选题] An administrator is concerned about users utilizing the company's wireless signal with their personal laptops. Which of the following is the BEST method to use to prevent unauthorized devices from using the company's wireless network?（）

A、Secure VPN  B、MAC filtering  C、IP filtering  D、Static IP addresses  

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第3题
[] A company has a Frame Relay WAN with one central - site router and 100 branch office routers. A partial mesh of PVCs exists: one PVC between the central site and each of t he 100 branch routers. All routers use point - to - point subinterfaces and one subnet per PVC. Which of the following is true about OSPF in this design?（） A company has a Frame Relay WAN with one central - site router and 100 branch office routers. A partial mesh of PVCs exists: one PVC between the central site and each of t he 100 branch routers. All routers use point - to - point subinterfaces and one subnet per PVC. Which of the following is true about OSPF in this design?（）

A、A. The central site router has 100 fully adjacent neighborships with the 100 branches  B、B. The central site router has neighborships with all branch routers, but fully adjacent neighbors with only two branches  C、C. The central site router has a neighborship with the Frame Relay switcH  D、D. None of the other answers is correct  

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第4题
[] I was worried about my maths, but Mr. Brown gave me an A.（）

A、A.Don't worry about it.  B、B.Congratulations! That's a difficult course.  C、C.Mr. Brown is very good.  D、D.Good luck to you！  

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第5题
[多选题] Which two statements about the IS -IS routing protocol are true?（）

A、IS - IS is capable of supporting IPv4 and IPv6.  B、IS - IS is only capable of supporting IPv4 and CLNS.  C、IS - IS routers use ES - IS hellos (ESH) to establish and to maintain neighbor relationships.  D、IS - IS routers run the Bellman - Ford algorithm against their LSDBs to pick the best paths.  E、Level 1 routers learn about paths within the area of which they are a part.  F、Level 2 routers learn about paths both within areas and between areas.  

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第6题
[简答题] t≥0时电路如图所示，初始值uC（0）=1V。当时iS（t）=1A，uC（t）=1V，t≥0；当iS（t）=tA时，uC（t）=（2e-t+t-1）V，t≥0。当iS（t）=（1+t）A时，且uC（0）仍为1V，在t≥0时，uC（t）为多少？

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第7题
[单选题] Which of the following is false?（）

A、A company should develop a SMS and implement it  B、A company implementing a SMS properly may obtain a DOC  C、Once a company obtains its DOC, each vessel of this company will obtain a SMC  D、DOC is valid for 60 months unless “major non-conformity” is found  

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第8题
[单选题] Two buildings on the San Jose campus of a small company must be connected to use Ethernet with a bandwidth of at least 100 Mbps. The company is concerned about possible problems from voltage potential differences between the two buildings. Which media type should be used for the connection（）。

A、UTP cable  B、STP cable  C、coaxial cable  D、fiber optic cable  

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第9题
[] Which of the following is true?（）

A、A.A company should develop an ISM and implement it  B、B.A company implementing an ISM properly may obtain a DOC  C、C.Once a company obtains its DOC, each vessel of this company will obtain a SMC  D、D.DOC is valid for 60 months unless “major non-conformity” is found  

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