Three concepts are central to the OSI model: Service, Interface andA．LayersB．applicationsC

The following three concepts are essential to the OSI model: service, interface and

A．networks

B．applications

C．protocols

D．layers

The following three concepts are essential to the OSI model:service,interface and

A． networks

B．applications

C．protocols

D．layers

A. A hub router prevents routes from being advertised to the remote router.

B. Only remote routers are configured as stubs.

C. Stub routers are not queried for routes.

D. Spoke routers connected to hub routers answer the route queries for the stub router.

E. A stub router should have only EIGRP hub routers as neighbors.

F. EIGRP stub routing should be used on hub routers only.

A. If a packet is sent to a multicast group address, the multicast frame contains the source multicast address.

B. A router does not have to be a member of a multicast group to recei ve multicast data.

C. A router must be a member of a multicast group to send to the group.

D. A router does not have to be a member of a multicast group to send to the group.

E. If a packet is sent to a multicast group address, all members of the multic ast group will receive it.

F. A router must be a member of a multicast group to receive multicast data.

a large number of computers（）through a real-time communication network such as the Internet. In science, cloud computing is a（）for distributed computing over a network, and means the（）to run a program or application on many connected computers at the same time. The architecture of a cloud is developed at three layers: infrastructure, platform, and application, The infrastructure layer is built with virtualized computer, storage, and network resources. The platform layer is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastructure layer serves as the（）for building the platform layer of the cloud. In turn, the platform layer is a foundation for implementing the（）layer for SaaS applications.

A.connectedB.imlementedC.optimizedD.VirtualizedA.replacementB.switchC.substituteD.synonym(同义词)A.abilityB.applroachC.functionD.methodA.networkB.foundationC.softwareD.hardwareA.resoruceB.serviceC.applicationD.software

The analysis phase answers the questions of who will use the system, what the system will do, and where and when it will be used. During this phase, the project team investigates ny current system,identifies (71) , and develops a concept for the new system. This phase as three steps: first, (72) is developed to guide the project team's efforts. It usually ncludes an analysis of the current system and its problems, and the ways to design a new ystem. The next step is (73) The analysis ofthis information - in conjunction withinput rom the project sponsor and many other people - leads to the development of a concept for a ew system. The system concept is then used as a basis to develop a set ofbusiness analysis odels that describes how the business will operate if the new system were developed. The set of models typically includes models that represent the (74) necessary to support the nderlying business process. Last, the analyses, system concepts, and models are combined nto a document called the (75), which is presented to the project sponsor and other key ecision makers that decide whether the project should continue to move forward

A.improvementopportunities

B.logicalmodel

C.systemrequirements

D.systemarchitecture@@@SXB@@@A.a user manual

B.an analysis strategy

C. an analysis use case

D.a design user case@@@SXB@@@A.project scope definition

B.prob,lems analysis

C.decisionanalysis

D.requirementsgathering@@@SXB@@@A.dataandprocesses

B.systeminfrastructures

C.externalagents

D.systemsoftware@@@SXB@@@A.requirementsstatement

B.designspecification

C.systemproposal

D.project charter

试题(71)～(75)

The analysis phase answers the questions of who will use the system, what the system will do, and where and when it will be used. During this phase, the project team investigates ny current system,identifies (71) , and develops a concept for the new system. This phase as three steps: first, (72) is developed to guide the project team's efforts. It usually ncludes an analysis of the current system and its problems, and the ways to design a new ystem. The next step is (73) The analysis ofthis information - in conjunction withinput rom the project sponsor and many other people - leads to the development of a concept for a ew system. The system concept is then used as a basis to develop a set ofbusiness analysis odels that describes how the business will operate if the new system were developed. The set of models typically includes models that represent the (74) necessary to support the nderlying business process. Last, the analyses, system concepts, and models are combined nto a document called the (75), which is presented to the project sponsor and other key ecision makers that decide whether the project should continue to move forward.

(71) A. improvementopportunities

B. logicalmodel

C. systemrequirements

D. systemarchitecture

(72) A. a user manual

B. an analysis strategy

C. an analysis use case

D. a design user case

(73) A. project scope definition

B. prob,lems analysis

C. decisionanalysis

D. requirementsgathering

(74) A. dataandprocesses

B. systeminfrastructures

C. externalagents

D. systemsoftware

(75) A. requirementsstatement

B. designspecification

C. systemproposal

D. project charter

ort, and convenience. These cars will float along never touching the ground, and therefore will have no need for wheels. Annoying highway vibrations, caused by the rotations of the disc-and-tire wheels, will be things of the past. The coming highway passenger cars will literally fly above the road, supported on columns of air compressed by

turbine-driven fans.

The car without wheels has been called a “flying car” , and, in a sense, that’ s just what it is; however, it will not back out of the family garage, start down the street, and then suddenly go quickly upward heading for some distant point. On the contrary, to avoid problems in aerial navigation, the wheel-less vehicle probably will travel no more than three inches above road surface. It will travel over fairly rough road and even over smooth water.

The inevitable problems of maritime regulations, severe weather conditions, and running out of fuel in remote areas all will require new concepts of operation, servicing, and vehicle regulation.

1.The author believes that cars of the future _______ .

A、will be replaced by airplanes

B、will have wheels unlike those of today

C、will u s e columns of air instead of wheels

D、will u s e wheels without tires

2.Cars of the future will run _______ .

A、without annoying noise

B、without fuel

C、much more smoothly

D、on a number of fans

3.The car without wheels has been called a “flying car” because _______ .

A、it travels a few inches above the ground

B、it can fly as a plane does

C、it moves at a very high speed

D、it can travel over smooth water

4.Where is a wheel-less car least fit to travel_____ .

A、Over soft land

B、Over rough country roads

C、Over highways

D、Over waterfalls

5.Wheel-less cars will _______ .

A、eliminate all traffic problems

B、create new traffic problems

C、eliminate parking problems

D、both A and C

A.Ren

B.Rituals

C.Songs

D.Li

A.Conservation

B.Money measurement

C.Materiality

D.Consistency