The metriC assigneD to eaCh network DepenDs on the type of protoCol.Some simple protoCol, like RIP, treats eaCh network as equals.The (71) of passing through eaCh network is the same;it is one (72) Count.So if a paCket passes through 10 network to reaCh the Destination, the total Cost is 10 hop Counts.Other protoCols, suCh as OSPF, allow the aDministrator to assign a Cost for passing through a network BaseD on the type of serviCe requireD.A (73) through a network Can have Different Costs(metriCs).For example, if maximum (74) is the DesireD type of serviCe, a satellite link has a lower metriC than a fiBer-optiC line.On the other hanD, if minimum (75) is the DesireD type of serviCe, a fiBer-optiC line has a lower metriC than a satellite line.OSPF allow eaCh router to have several routing taBle BaseD on the requireD type of serviCe.

（71）

A．numBer

B．ConneCtion

C．Diagram

D．Cost

[主观题] The metric assigned to each network depends on the type of protocol. Some simple protocol, like RIP, treats each network as equals. The （71） of passing through each network is the same; it is one （72） count. So if a packet passes through 10 network

[单选题]Each machine in the internet is assigned a unique network address,called（）,that is used to identify the machine for communication purposesA .MAC addressB .IP addressC .host addressD .domain name address

[单选题]OSPF中，以下关于Network-Summary-LSA中Metric值的描述正确的是？（）A . Network-Summary-LSA中的Metric值为收到该LSA的路由器到达目的网段的总开销B . Network-Summary-LSA中的Metric值为所描述网段上DR端口的开销C . Network-Summary-LSA中的Metric值为所描述网段所在区域的ABR到达此网段的开销D . Network-Summary-LSA中的Metric值为此LSA的发布者到达所描述网段的开

[单选题]A local area network (LAN) is the communication of a number of computers by

[单选题]The selection of an oil from the （） depends to a great extent on the operating conditions, the design of the engine and the type of fuel to be burned.A . commercially availableB . commerciallyC . commercial availableD . commerce available

[单选题]（）is a category assigned to products or services having the same functional use but different technical characteristics．It is not same as quality．（）A．Problem B．Grade C．Risk D．Defect

[单选题]（）is a category assigned to products or services having the same functional use but different technical characteristics. It is not same as quality.A . ProblemB . GradeC . RiskD . Defect

[名词解释] 度量（metric）

[单选题]is a category assigned to products or services having the same fimctional use but different technical characteristics. It is not same as quality.A．ProblemB．GradeC．RiskD．Defect

[单选题] (73) is a category assigned to products or services having the samefunctional use but different technical characteristics. It is not same asquality.A．ProblemB．GradeC．RiskD．Defect