中级网络工程师.单选集考试卷模拟考试题

1、姓名：_ 班级：_ 学号：_-密-封 -线- 中级网络工程师.单选集考试卷模拟考试题考试时间：120分钟 考试总分：100分题号一二三四五总分分数遵守考场纪律，维护知识尊严，杜绝违纪行为，确保考试结果公正。1、networks can be interconnected by different devices in the physical layer networks can be connected by(1)or hubs. which just move the bits from one network to an identical network. one layer up w

2、e find bridges and switches which operate at data link layer. they can accept(2)examine the mac address and forward the frames to a different network while doing minor protocol translation in the process in me network layer, we have routers that can connect two networks, if two networks have(3)netwo

3、rk layer, the router may be able to translate between the packer formats. in the transport layer we find transport gateway, which can interface between two transport connections finally, in the application layer, application gateways translate message(4). as an example, gateways between internet e-m

4、ail and x.400 e-mail must(5)the e-mail message and change various header fields.（ ）a.reapersb.relaysc.packagesd.modems2、networks can be interconnected by different devices in the physical layer networks can be connected by(1)or hubs. which just move the bits from one network to an identical network.

5、 one layer up we find bridges and switches which operate at data link layer. they can accept(2)examine the mac address and forward the frames to a different network while doing minor protocol translation in the process in me network layer, we have routers that can connect two networks, if two networ

6、ks have(3)network layer, the router may be able to translate between the packer formats. in the transport layer we find transport gateway, which can interface between two transport connections finally, in the application layer, application gateways translate message(4). as an example, gateways betwe

7、en internet e-mail and x.400 e-mail must(5)the e-mail message and change various header fields.（ ）a.frimesb.packetsc.packagesd.cells3、networks can be interconnected by different devices in the physical layer networks can be connected by(1)or hubs. which just move the bits from one network to an iden

8、tical network. one layer up we find bridges and switches which operate at data link layer. they can accept(2)examine the mac address and forward the frames to a different network while doing minor protocol translation in the process in me network layer, we have routers that can connect two networks,

9、 if two networks have(3)network layer, the router may be able to translate between the packer formats. in the transport layer we find transport gateway, which can interface between two transport connections finally, in the application layer, application gateways translate message(4). as an example,

10、gateways between internet e-mail and x.400 e-mail must(5)the e-mail message and change various header fields.（ ）a.specialb.dependentc.similard.dissimilar4、networks can be interconnected by different devices in the physical layer networks can be connected by(1)or hubs. which just move the bits from o

11、ne network to an identical network. one layer up we find bridges and switches which operate at data link layer. they can accept(2)examine the mac address and forward the frames to a different network while doing minor protocol translation in the process in me network layer, we have routers that can

12、connect two networks, if two networks have(3)network layer, the router may be able to translate between the packer formats. in the transport layer we find transport gateway, which can interface between two transport connections finally, in the application layer, application gateways translate messag

13、e(4). as an example, gateways between internet e-mail and x.400 e-mail must(5)the e-mail message and change various header fields.（ ）a.syntaxb.semanticsc.languaged.format5、networks can be interconnected by different devices in the physical layer networks can be connected by(1)or hubs. which just mov

14、e the bits from one network to an identical network. one layer up we find bridges and switches which operate at data link layer. they can accept(2)examine the mac address and forward the frames to a different network while doing minor protocol translation in the process in me network layer, we have

15、routers that can connect two networks, if two networks have(3)network layer, the router may be able to translate between the packer formats. in the transport layer we find transport gateway, which can interface between two transport connections finally, in the application layer, application gateways

16、 translate message(4). as an example, gateways between internet e-mail and x.400 e-mail must(5)the e-mail message and change various header fields.（ ）a.analyzeb.parsec.deleted.create6、the purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable(6)of the

17、technical requirements for the software product. during the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and

18、each(7)that it must meet. the starting point is usually a set of high level requirements from the(8)that describe the project or problem.in either case, the requirements definition team formulates an overall concept for the system and then defines(9)showing how the system will be operated publishes

19、the system and operations concept document and conducts a system concept review(scr).following the scr, the team derives(10)require merits for the system from the high level requirements and the system and operations conceptusing structured or object-oriented analysis, the team specifies the softwar

20、e functions and algorithms needed to satisfy each detailed requirement.（ ）a.functionb.definitionc.specificationd.statement7、the purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable(6)of the technical requirements for the software product. during the

21、requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each(7)that it must meet. the starting point is usually a se

22、t of high level requirements from the(8)that describe the project or problem.in either case, the requirements definition team formulates an overall concept for the system and then defines(9)showing how the system will be operated publishes the system and operations concept document and conducts a sy

23、stem concept review(scr).following the scr, the team derives(10)require merits for the system from the high level requirements and the system and operations conceptusing structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed r

24、equirement.（ ）a.criterionb.standardc.modeld.system8、the purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable(6)of the technical requirements for the software product. during the requirements definition phase, the requirements definition team uses an

25、iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each(7)that it must meet. the starting point is usually a set of high level requirements from the(8)that describe the project or pro

26、blem.in either case, the requirements definition team formulates an overall concept for the system and then defines(9)showing how the system will be operated publishes the system and operations concept document and conducts a system concept review(scr).following the scr, the team derives(10)require

27、merits for the system from the high level requirements and the system and operations conceptusing structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirement.（ ）a.producerb.customerc.programmerd.analyser9、the purpose of

28、 the requirements definition phase is to produce a clear, complete, consistent, and testable(6)of the technical requirements for the software product. during the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requir

29、ements into a complete and detailed specification of each function that the software must perform and each(7)that it must meet. the starting point is usually a set of high level requirements from the(8)that describe the project or problem.in either case, the requirements definition team formulates a

30、n overall concept for the system and then defines(9)showing how the system will be operated publishes the system and operations concept document and conducts a system concept review(scr).following the scr, the team derives(10)require merits for the system from the high level requirements and the sys

31、tem and operations conceptusing structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirement.（ ）a.rulesb.principlesc.scenariosd.scenes10、the purpose of the requirements definition phase is to produce a clear, complete, c

32、onsistent, and testable(6)of the technical requirements for the software product. during the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function th

33、at the software must perform and each(7)that it must meet. the starting point is usually a set of high level requirements from the(8)that describe the project or problem.in either case, the requirements definition team formulates an overall concept for the system and then defines(9)showing how the s

34、ystem will be operated publishes the system and operations concept document and conducts a system concept review(scr).following the scr, the team derives(10)require merits for the system from the high level requirements and the system and operations conceptusing structured or object-oriented analysi

35、s, the team specifies the software functions and algorithms needed to satisfy each detailed requirement.（ ）a.cotailedb.outlinedc.totald.complete11、for each blank, choose the best answer from the four choices and write down on the answer sheet.(11)is a protocol that a host uses to inform a router whe

36、n it joins or leaves an internet multicast group.(12)is an error detection code that most data communication networks use.(13)is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.(14)is a transfer mode in which all types of information are organized

37、into fixed form cells on an asynchronous or non-periodic basis over a range of media.(15)is an identifier of a web page.（ ）a.icmpb.smtpc.igmpd.arp12、for each blank, choose the best answer from the four choices and write down on the answer sheet.(11)is a protocol that a host uses to inform a router w

38、hen it joins or leaves an internet multicast group.(12)is an error detection code that most data communication networks use.(13)is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.(14)is a transfer mode in which all types of information are organize

39、d into fixed form cells on an asynchronous or non-periodic basis over a range of media.(15)is an identifier of a web page.（ ）a.4b/sbb.crcc.manchester coded.huffman code13、for each blank, choose the best answer from the four choices and write down on the answer sheet.(11)is a protocol that a host use

40、s to inform a router when it joins or leaves an internet multicast group.(12)is an error detection code that most data communication networks use.(13)is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.(14)is a transfer mode in which all types of in

41、formation are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media.(15)is an identifier of a web page.（ ）a.ospfb.ripc.rarpd.bgp14、for each blank, choose the best answer from the four choices and write down on the answer sheet.(11)is a protocol that a host us

42、es to inform a router when it joins or leaves an internet multicast group.(12)is an error detection code that most data communication networks use.(13)is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.(14)is a transfer mode in which all types of i

43、nformation are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media.(15)is an identifier of a web page.（ ）a.isdnb.x.25c.frame relayd.atm15、for each blank, choose the best answer from the four choices and write down on the answer sheet.(11)is a protocol that

44、a host uses to inform a router when it joins or leaves an internet multicast group.(12)is an error detection code that most data communication networks use.(13)is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.(14)is a transfer mode in which all t

45、ypes of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media.(15)is an identifier of a web page.（ ）16、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.spread spectrum simply means

46、that data is sent in small pieces over a number of the(16)frequencies available for use at any time in the specified range. devices using(17)spread spectrum(dsss) communicate by(18)each byte of data into several parts and sending them concurrently on different(19). dsss uses a lot of the available(2

47、0), about 22 megahertz(mhz).（ ）a.continuousb.highc.lowd.discrete17、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.spread spectrum simply means that data is sent in small pieces over a number of the(16)frequencies available for use at an

48、y time in the specified range. devices using(17)spread spectrum(dsss) communicate by(18)each byte of data into several parts and sending them concurrently on different(19). dsss uses a lot of the available(20), about 22 megahertz(mhz).（ ）a.direct-sequenceb.discrete-sequencec.duplicate-sequenced.dedi

49、cate-sequence18、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.spread spectrum simply means that data is sent in small pieces over a number of the(16)frequencies available for use at any time in the specified range. devices using(17)spr

50、ead spectrum(dsss) communicate by(18)each byte of data into several parts and sending them concurrently on different(19). dsss uses a lot of the available(20), about 22 megahertz(mhz).（ ）a.splittingb.combiningc.packingd.compacting19、in the following essay, each blank has four choices. choose the bes

51、t answer and write down on the answer sheet.spread spectrum simply means that data is sent in small pieces over a number of the(16)frequencies available for use at any time in the specified range. devices using(17)spread spectrum(dsss) communicate by(18)each byte of data into several parts and sendi

52、ng them concurrently on different(19). dsss uses a lot of the available(20), about 22 megahertz(mhz).（ ）a.bitsb.frequenciesc.packetsd.messages20、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.spread spectrum simply means that data is se

53、nt in small pieces over a number of the(16)frequencies available for use at any time in the specified range. devices using(17)spread spectrum(dsss) communicate by(18)each byte of data into several parts and sending them concurrently on different(19). dsss uses a lot of the available(20), about 22 me

54、gahertz(mhz).（ ）a.rateb.velocityc.bandwidthd.period21、for each blank, choose the best answer from the four choices and write down on the answer sheet.(21)is a six bytes osi layer 2 address which is burned into every networkingdevice that provides its unique identity for point to point communication.

55、(22)is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.(23)functions with two layers of protocols. it can connect networks of different speeds and can be adapted to an environment as it expands.(24)is the popular lan developed under

56、 the direction of the ieee802.5.(25)is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ansi.（ ）a.the mac addressb.the ip addressc.the subnet addressd.the virtual address22、for each blank, choose

57、 the best answer from the four choices and write down on the answer sheet.(21)is a six bytes osi layer 2 address which is burned into every networkingdevice that provides its unique identity for point to point communication.(22)is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.(23)functions with two layers of protocols. it can con