多項(xiàng)選擇題When you design QoS on CE for an MPLS Layer 2 VPN, which three things should be considered?()

A.Layer 2 access link QoS design
B.enterprise-to-service-provider mapping models
C.Layer 3 link access QoS design
D.service provider service level agreements
E.Layer 2 link access load balancing


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1.單項(xiàng)選擇題Which description of BGP authentication is true?()

A.MD5 has been used by BGP to encrypt BGP update packets.
B.BGP uses a message-digest algorithm to authenticate BGP peers
C.A plain-text password authentication is an option of BGP authentication
D.EBGP peers authentication is faster than IBGP peers authentication
E.BGP uses public key and private key to authenticate BGP peers.

3.多項(xiàng)選擇題Which three statements about the route target (RT) are true? ()

A.The RT is a BGP extended community.
B.The RT is an 8-byte field that is prefixed to an IPv4 address to make it a unique VPNv4 address.
C.When a VPN route that is learned from a CE router is injected into BGP, one or more RTs are associated with it
D.The distribution of VPN routing information is controlled through the use of VPN RTs
E.When a VPN route that is learned from a CE router is injected into BGP, there is always one RT that is associated with it.

4.多項(xiàng)選擇題Which three of these are types of Ethernet Virtual Connections (EVCs) in the MEF concept? ()

A.rooted multipoint EVC (E-Tree)
B.point-to-point EVC (E-Line)
C.point-to-multipoint EVC (E-Tree)
D.hub spoke EVC (E-Tree)
E.multipoint-to-multipoint EVC (E-LAN)

6.單項(xiàng)選擇題Which statement about Frame Relay is not true?()

A.Static mapping is used when the remote router does not support Inverse ARP.
B.Frame Relay Inverse ARP requires LMI capability to construct an address to the DLCI mapping tableon the router.
C.Frame Relay Inverse ARP is disabled by default in Cisco IOS Software for all protocols that areenabled on the physical interface.
D.Inverse ARP does not work when LMI is disabled.
E.Frame Relay provides forward and backward congestion notification messages

7.多項(xiàng)選擇題Option 10C is an implementation of Inter-AS MPLS VPN. Which two statements about Option 10C aretrue?()

A.Great scalability is offered
B.Route Target Rewrite must be configured on ASBRs
C.Multihop EBGP is utilized between route reflectors
D.Multihop EBGP is utilized between ASBRs
E.The ASBRs hold VPNv4 routes

8.單項(xiàng)選擇題Which statement about the Cisco MPLS TE Fast Reroute (FRR) node protection operation is not correct?()

A.It requires a next-next hop backup tunnel.
B.Point of local repair (PLR) swaps the next hop label and pushes the backup label.
C.The backup tunnel terminates on the merge point (MP) where traffic rejoins the primary tunnel.
D.The backup tunnel can have associated bandwidth capacity.
E.Restoration time is expected under 50 ms.

9.單項(xiàng)選擇題Where are MPLS point-to-multipoint traffic engineering packets replicated?()

A.head-end router
B.branch-point router
C.midpoint router
D.leaf-point router
E.tail-end router

10.多項(xiàng)選擇題Which three statements about BGP confederation and route reflectors are true? ()

A.Clusters are used in confederation schemes to avoid loops.
B.BGP network can have a confederation within a route reflector area.
C.An internal BGP network cannot have a route reflector within a confederation.
D.An internal BGP network can have a route reflector within a confederation.
E.Clusters are used in route reflector schemes to avoid loops.
F.BGP network cannot have a confederation within a route reflector area.

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