题目内容
（请给出正确答案）
A.IS之间只能传递Level-1路由
B.IS之间可以同时传递Level-1和Level-2路由
C.同时能传递Level-1和Level-2路由的IS称为Level-1-2IS，由它负责的不同区域间通信
D.为了节约系统资源，Level-1-2IS只维护Level-2的LSDB
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更多“使用IS－IS时，对于某一个Area内的IS而言，下列哪些说…”相关的问题
A. integrated SPF，整个IS-IS路由域只需要计算一个SPT树
B. 树中不改变的部分保持原树
C. 重新计算树中受影响的部分
D. i-SPF的计算时间要比完成SPF慢
B.Area包含Domain
C.一个Domain内可以有多个Area
D.一个Area内只能有一个Domain
A local-area network(LAN) is a communications network that(1)a variety of device and provides a(2)for information exchange among those devices. The scope of the LAN is small typically a single building or a cluster ofbuildings. The LAN is usually owned by the same organization that owns the(3)devices. The internal data rate of LAN is at least several Mbps. The basic Of LAN communication is broadcasting. At each station, there is a transmitter/ receiver that communicates over a(4)shared by other stations.A transmission from any one station is(5)to and received by all other stations.
Smith Forwarders
as agent for
ABC Line
signature
(1)( ) It is correct.
(2)( ) It is incorrect because ______
Software quality assurance is now an(1)sub-discipline of software engineering. As Buckly and Oston point out,(2)software quality assurance is likely to lead to an ultimate(3)of software costs. However, the major hurdle in the path of software management in this area is the lack of(4)software standards. The development of accepted and generally applicable standards should be one ofthe principal goals of(5)in software engineering.
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