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多项选择题

Which four statements about an IP service level agreement （SLA） are true？ （）

A.SLA responder knows type of operation， the port used， and duration.
B.SLA responder inserts in and out timestamps in the packet payload.
C.SLA sender and responder use the IP SLA Control Protocol to communicate with each other before
D.SLA sender and responder communication can be encrypted.
E.SLA sender and responder communication can be authenticated with MD5.

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热门试题

单项选择题WhichOSPFLSAisusedtosupportMPLStrafficengineering？（）

A.opaque LSA （Type 8）
B.opaque LSA （Type 9）
C.link LSA （Type 1）
D.network LSA （Type 2）
E.opaque LSA （Type 10）

多项选择题Option10A（back-to-backVRF）isanimplementationofinter-ASMPLSVPN.Whichoffourstatementsaboutoption10Aarenottrue？（）

A.MPLS is required between the ASBRs.
B.ASBR must hold all routing information.
C.It is a scalable solution.
D.It is a simple solution.
E.MP-EBGP is used to exchange routes between ASBRs.

多项选择题Whichthreeoftheseareopticalchanneldataunit（ODU）overheadfields？（）

A.general communication channel 0 （GCC0）
B.section monitoring
C.reserved （RES）
D.general communication channels 1 and 2 （GCC1 GCC2）
E.tandem connection monitoring activation deactivation （TCM ACT）

单项选择题WhichstatementaboutOSPFASBRsummaryLSAistrue？（）

A.It is generated by an ASBR and indicates the reachability to an ABR located in another area.
B.It is generated by ABR and indicates the reachability to an ASBR located in another AS.
C.It is generated by ABR and indicates reachability to itself.
D.It is generated by ABR and indicates the reachability to an ASBR located in another area.
E.It is generated by ASBR and indicates the reachability to an ABR.

多项选择题WhichtwomodelsarethemodelsofDiffServ-AwardtrafficEngineering？（）

A.Class-based Model
B.Maximum Allocation Model
C.Russian Doll Model
D.Global Tunnel Model
E.Policy-based Model