多項選擇題When should traffic shaping be implemented on Frame Relay PVCs?()

A.When you want to drop excess traffic above the CIR
B.When there is a speed mismatch between the central site and the remote site
C.When using Frame Relay SVCs
D.When over-subscribing the central site link
E.When LLQ is implemented on the Frame Relay PVC
F.When Multilink PPP LFI is implemented on the Frame Relay PVC


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1.單項選擇題What IOS commands display MPLS label mapping on an LSR?()

A.Show mpls forwading-table
B.Show mpls ldp bindings
C.Show mpls ldp neighbor detail
D.Show mpls ldp parameters
E.Show mpls ldp discovery

2.多項選擇題Which of the following ATOM traffic encapsulations require the use of a Control Word?()

A.Cell relay
B.aal5
C.Ethernet VLAN
D.Frame Relay
E.HDLC
F.PPP

3.單項選擇題There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence (from outer to inner) for the VPN traffic on this router?()

A.TE label, IGP label, VPN label
B.IGP label, TE label, VPN label
C.TE label, VPN label, IGP label
D.VPN label, IGP label, TE label
E.IGP label, VPN label, TE label

4.多項選擇題Unicast Reverse Path Forwarding (Urpf ) can work in the following modes:()

A.Express mode
B.Strict mode
C.Loose mode
D.Tunnel mode
E.Safe mode

5.多項選擇題Select the three valid LMI extension.()

A.Multicasting
B.Global addressing
C.Forward-explicit congestion notification (FECN)
D.Virtual circuit status messages.
E.Backward-explicit congestion notification (BECN)

6.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

8.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

9.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

10.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

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