多项选择题

Which three components are included in the Cisco IOS XR infrastructure？（）

A.modular line cards
B.shelf controllers
C.route processors
D.service processors
E.distributed service cards

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单项选择题

How many messages does Internet Key Exchange use to negotiate SA characteristics when it runs inaggressive mode？（）

A.3
B.4
C.5
D.2
E.6

多项选择题

Which three statements about NetFlow are true？（）

A.LCP is used for PPP over ATM （PPPoA） setup.
B.LCP is used for PPP over Ethernet （PPPoE） setup.
C.LCP is used for PPP over Ethernet （PPPoPR） setup.
D.LCP is used for PPP CHAP authentication.
E.LCP is used for basic PPP link setup and operation.

多项选择题

Which three statements about NetFlow are true？（）

A.NetFlow records unidirectional IP traffic flow.
B.NetFlow records MPLS frame flow.
C.NetFlow expert is only over TCP.
D.NetFlow records is only over UDP.
E.NetFlow records subinterface information of traffic flow.