多項選擇題When provisioning for Interactive-Video（e，g，video conferencing traffic）which three statementsdepicts the correct requirements？（）

A.Loss should be no more than 1 percent.
B.One-way latency should be no more than 150 ms
C.Jitter should be no more than 30 ms
D.Loss should be no more than 3 percent
E.One-way latency should be no more than 150/2=75 ms
F.Jitter should be no more than 300 ms


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2.單項選擇題Which statement about the Link Control Protocol （LCP） is true？（）

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

3.多項選擇題In which two ways does the BGP graceful restart capability preserve prefix information during a restart？（）

A.The peer router sends an end-of RIB message to the restarting router
B.The peer router immediately removes the BGP routes that it learned from the restarting router from its BGP routing table
C.The restarting router does not remove any stale prefixes after the timer for stale entries expires
D.The router establishes BGP sessions with other routers and relearns the BGP routes from other routers that are also capable of graceful restart. The restarting router waits to receive updates from the neighboring routers. When the neighboring routers send end-of-RIB messages to indicate that they are done sending updates， the restarting router starts sending its own updates
E.The restarting router removes any stale prefixes after the timer for stale entries expires

4.多項選擇題Which three IS-IS TLVs are used to support MPLS traffic engineering？ （）

A.extended TLV 22
B.extended TLV 23
C.extended TLV 134
D.extended TLV 135
E.extended TLV 136
F.extended TLV 138

5.多項選擇題Which four of these are MPLS label header fields？ （）

A.Label
B.VPI VCI
C.EXP
D.TTL
E.FCS
F.S flag