單項(xiàng)選擇題

How is network layer addressing accomplished in the OSI protocol suite?（）

A. Internet Protocol address
B. Media Access Control address
C. Packet Layer Proto col address
D. Network Service Access Point address
E. Authority and Format Identifier address

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單項(xiàng)選擇題

What is the default metric used on IS -IS routers for each interface?（）

A. The cost is set to 10 for all interfaces.
B. The cost is set to 10 for LAN interfaces and 20 for WAN interfaces.
C. The cost is based on the speed of the interface.
D. The cost is based o n a composite of bandwidth and delay of the interface.

單項(xiàng)選擇題

Which packet type is used to ackno wledge LSPs on point - to - point links and to request missing pieces of information in the IS - IS link -state database?（）

A. complete SNP (CSNP)
B. partial SNP (PSNP)
C. hello
D. database query
E. database description packet (DDP)