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多选题
Which two of these are characteristics of MPLS VPNs？ （）
A
Layer 3 MPLS VPNs can forward only IP packets
B
Layer 2 MPLS VPNs can forward any network protocol
C
MPL S label paths are automatically formed based on Layer 2 frames
D
Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames
E
In Layer 2 MPLS VPNS， the service provider controls the customer Layer 3 policies
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更多 “多选题Which two of these are characteristics of MPLS VPNs？ （）ALayer 3 MPLS VPNs can forward only IP packetsBLayer 2 MPLS VPNs can forward any network protocolCMPL S label paths are automatically formed based on Layer 2 framesDLayer 3 MPLS VPNs can forward any network protocol based on Layer 2 framesEIn Layer 2 MPLS VPNS， the service provider controls the customer Layer 3 policies” 相关考题
考题
In BGP MPLS VPNs, which router maintains VPN－specific routing tables, also known as VRFs?()
A.PB.CEC.PED.SP
考题
What are two advantages to customers with L2 MPLS VPNs? ()(Choose two.)
A. Service provider has routing control.B. Customers control their own routing.C. Can communicate protocols other than IP.D. Allows them to use separate networks for IP and VPN traffic.
考题
Which two are characteristics of both Kompella and Martini－based VPNs? ()
A. label stackingB. auto-provisioningC. circuit status vectorD. Martini EncapsulationE. LDP-based control plane
考题
When implementing MPLS VPNs between CE and PE routers, which of these statements is correct?As a Network Engineer, it is necessary for you to know how to implement MPLS VPNs between Customer Edge and Provider Edge routers.Refer to the following descriptions, which one is making sense?（）A. If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistributionB. If using IS-IS as the PE-CE routing protocol, no redistribution is requiredC. If using static routes between the CE and PE routers, no redistribution of other VPN routes is requiredD. If PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required
考题
The router SIS-R has been configured in a CIS network. As a network administrator, you were required to enable MPLS on that router.Which of the following description is making sense on the basis of the output information?（）A. CEF switching is only needed to forward labeled packets.B. CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.C. Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.D. Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.
考题
Which two of these are characteristics of MPLS VPNs?()
A. Layer 3 MPLS VPNs can forward only IP packetsB. Layer 2 MPLS VPNs can forward any network protocolC. MPLS label paths are automatically formed based on Layer 2 framesD. Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 framesE. In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies
考题
Which technology is an example of the need for a designer to clearly define features and designedperformance when designing advanced WAN services with a service provider？（）A、 FHRP to remote branches.B、 Layer 3 MPLS VPNs routing.C、 Control protocols （for example Spanning Tree Protocol） for a Layer 3 MPLS service.D、 Intrusion prevention， QoS， and stateful firewall support network wide.
考题
When implementing MPLS VPNs between CE and PE routers, which of these statements is correct? As a Network Engineer, it is necessary for you to know how to implement MPLS VPNs between Customer Edge and Provider Edge routers. Refer to the following descriptions, which one is making sense?（）A、If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistributionB、If using IS-IS as the PE-CE routing protocol, no redistribution is requiredC、If using static routes between the CE and PE routers, no redistribution of other VPN routes is requiredD、If PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required
考题
Which of the following technologies can improve convergence time following a link failure in a serviceprovider network？（）A、MPLS TE FRB、MPLS VPNC、BFDD、RSVPE、VPLSF、SNMP
考题
In the context of MPLS，what is the correct action to be performed when an aggregate label is received ？（）A、It adds the VPN label into the top label in the MPLS label stackB、It replaces the top label in the MPLS label stack with a VPN label and propagatesC、It replaces the bottom label in the MPLS label stack with a VPN label and propagatesD、It removes the top label in the MPLS label stack and does a Layer 3 lookup on underlying IP packetsE、None of above
考题
Which two statements about MPLS label-switched paths (LSPs) are true? （）A、LSPs are bidirectional.B、LSPs are unidirectional.C、LSPs must follow the IGP's shortest path.D、LSPs can follow paths other than the IGP's shortest path.
考题
Which three functions can CCC be used for？（）A、To interconnect VLANSB、To interconnect ATM VCsC、To interconnect MPLS LSPsD、To interconnect MPLS VPNs
考题
Which statement correctly describes the disabling of IP TTL propagation in an MPLS network？（）A、The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSRB、TTL propagation cannot be disabled in an MPLS domainC、TTL propagation is only disabled on the ingress edge LSRD、The TTL field of the MPLS label header is set to 255E、The TTL field of the IP packet is set to 0
考题
Which three MPLS statements are true？（）A、Cisco Express Forwarding （CEF） must be enabled as a prerequisite to running MPLS on a Cisco router.B、Frame-mode MPLS inserts a 32-bit label between the Layer 3 and Layer 4 headers.C、MPLS is designed for use with frame-based Layer 2 encapsulation protocols such as Frame Relay， but is not supported by ATM because of ATM fixed-length cells.D、OSPF， EIGRP， IS-IS， RIP， and BGP can be used in the control plane.E、The control plane is responsible for forwarding packets.F、The two major components of MPLS include the control plane and the data plane.
考题
Which two of these are characteristics of MPLS VPNs？ （）A、 Layer 3 MPLS VPNs can forward only IP packetsB、 Layer 2 MPLS VPNs can forward any network protocolC、 MPL S label paths are automatically formed based on Layer 2 framesD、 Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 framesE、 In Layer 2 MPLS VPNS， the service provider controls the customer Layer 3 policies
考题
In Any Transport over MPLS （AtoM） Control word is an optional 4-byte field used in the pseudowire packet.The control word carries generic and Layer 2 payload-specific information to emulate L2 packets correctly.In pseudowire packet， where is this Control Word inserted？（）A、Inserted between the MPLS label stack and the Layer 3 payloadB、Inserted between the MPLS label stack and the Layer 3 HeaderC、Inserted between the MPLS label stack and the Layer 2 payloadD、Inserted between the MPLS label stack and the Layer 2 header
考题
Which two of these are characteristics of MPLS VPNs?（）A、Layer 3 MPLS VPNs can forward only IP packetsB、Layer 2 MPLS VPNs can forward any network protocolC、MPLS label paths are automatically formed based on Layer 2 framesD、Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 framesE、In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies
考题
Which two are characteristics of both Kompella and Martini-based VPNs? （）A、label stackingB、auto-provisioningC、circuit status vectorD、Martini EncapsulationE、LDP-based control plane
考题
In BGP MPLS VPNs, which router maintains VPN-specific routing tables, also known as VRFs?（）A、PB、CEC、PED、SP
考题
单选题Which technology is an example of the need for a designer to clearly define features and designedperformance when designing advanced WAN services with a service provider？（）A
FHRP to remote branches.B
Layer 3 MPLS VPNs routing.C
Control protocols （for example Spanning Tree Protocol） for a Layer 3 MPLS service.D
Intrusion prevention， QoS， and stateful firewall support network wide.
考题
多选题Which three functions can CCC be used for？（）ATo interconnect VLANSBTo interconnect ATM VCsCTo interconnect MPLS LSPsDTo interconnect MPLS VPNs
考题
多选题Which two of these are characteristics of MPLS VPNs?（）ALayer 3 MPLS VPNs can forward only IP packetsBLayer 2 MPLS VPNs can forward any network protocolCMPLS label paths are automatically formed based on Layer 2 framesDLayer 3 MPLS VPNs can forward any network protocol based on Layer 2 framesEIn Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies
考题
多选题Which three MPLS statements are true？（）ACisco Express Forwarding （CEF） must be enabled as a prerequisite to running MPLS on a Cisco router.BFrame-mode MPLS inserts a 32-bit label between the Layer 3 and Layer 4 headers.CMPLS is designed for use with frame-based Layer 2 encapsulation protocols such as Frame Relay， but is not supported by ATM because of ATM fixed-length cells.DOSPF， EIGRP， IS-IS， RIP， and BGP can be used in the control plane.EThe control plane is responsible for forwarding packets.FThe two major components of MPLS include the control plane and the data plane.
考题
多选题What are two advantages to customers with L2 MPLS VPNs? （）(Choose two.)AService provider has routing control.BCustomers control their own routing.CCan communicate protocols other than IP.DAllows them to use separate networks for IP and VPN traffic.
考题
多选题Which two statements about MPLS label-switched paths (LSPs) are true? （）ALSPs are bidirectional.BLSPs are unidirectional.CLSPs must follow the IGP's shortest path.DLSPs can follow paths other than the IGP's shortest path.
考题
多选题Which two are characteristics of both Kompella and Martini-based VPNs? （）Alabel stackingBauto-provisioningCcircuit status vectorDMartini EncapsulationELDP-based control plane
考题
单选题In the context of MPLS，what is the correct action to be performed when an aggregate label is received ？（）A
It adds the VPN label into the top label in the MPLS label stackB
It replaces the top label in the MPLS label stack with a VPN label and propagatesC
It replaces the bottom label in the MPLS label stack with a VPN label and propagatesD
It removes the top label in the MPLS label stack and does a Layer 3 lookup on underlying IP packetsE
None of above
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