单项选择题

What is the purpose of IS-IS level boundaries?（）……

What is the purpose of IS-IS level boundaries?（）

A. Restrain the formation of adjacencies.
B. Control the flooding scope of link-state PDUs.
C. Partition the L2 backbone into multiple domains.
D. Aggregate L1 domains into a contiguous backbone.

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热门试题

单项选择题Which mechanism accommodates the use of overlapping addresses in 2547bis VPNs?（）

A. policies
B. route origins
C. route targets
D. route distinguishers

多项选择题In which two ways can the router ID selection be controlled?（）

A. Manually assign rid.
B. configure local-address.
C. enable the fxp0 interface.
D. Assign nonmartian address to lo0.

单项选择题Why does IS-IS use the SPF algorithm?（）

A. to determine the pseudonode ID
B. to determine the next hop to a given destination
C. to determine the complete path to a given destination
D. to determine the number of routers present in a given area

单项选择题Which BGP attribute is considered first as a tie-breaker in JUNOS software?（）

A. origin
B. weight
C. as-path length
D. local-preference

单项选择题Given the regular expression: 64900 . (65400-65410) Which AS Path matches the given regularexpression?（）

A. 64900 65000 65500
B. 64900 65402 65409
C. 64900 65000 65300 65410
D. 64900 65402 65405 65409