4A0-104 - Services Architecture
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Consider a network that has four PE routers. If a customer wants a VPLS that has sites on only three of the PEs, how many mesh SDPs need to be configured for this service?
By default, what happens when a packet with a VLAN tag is received on a SAP provisioned with null encapsulation?
The original VLAN tag is kept.
Which of the following about VPLS MAC learning is TRUE?
Frames received on a SAP that are broadcast, multicast or unknown are flooded.
Which of the following SAPs will toward tagged frames but NOT untagged frames?
None of the above.
In a Layer 2 VPN service, the FCS is stripped when a customer packet arrives at the ingress PE and regenerated on egress.
Which of the following about the components of a service on the Alcatel-Lucent 7750 SR is FALSE?
A customer is only created on one site of a distributed service.
On an Alcatel-Lucent 7750 SR, which vc-type will strip service delimiting tags at the ingress PE?
Which of the following commands is used to configure a new MPLS SDP?
configure service sdp sdp-id mpls create
Which of the following describes a service on the Alcatel-Lucent 7750 SR?
All of the above
Which of the following commands is used to enable an Epipe service?
config>service# epipe service-id no shutdown
When configuring RSVP-TE for transport tunnels, which command enables RSVP by default?
configure router mpls
Which of the following is NOT a service offered on the Alcatel-Lucent 7750 SR?
Which of the following best describes an IES?
Layer 3 direct Internet access service.
When using MP-BGP for an IPv4 VPRN service, what address family needs to be used for a PE- CE BGP session?
The IPv4 address family.
Which of the following statements is TRUE concerning the advertisement of VRF routes on a 7750 SR?
By default, a 7750 SR does not advertise all routes in the VRF to a CE router.
The default 7750 SR behavior describes all routes in a VRF that are advertised to other PE routers.
On an Alcatel-Lucent 7750 SR, which of the following statements about the default advertisement of VRF routes is true?
All routes in the VRF are advertised to the PEs, but not to the CEs.
What is the purpose of service mirroring on the Alcatel-Lucent Service Router?
To replicate traffic from a service port to another port for debugging or monitoring functions
Which of the following fields is NOT present in a GRE encapsulated VPN service packet?
Which of the following SAPs will forward all tagged and untagged frames on the port? (Choose 2)
Which of the following commands is required to configure an Ethernet port to be used as a SAP in a service?
Configure port port-id Ethernet mode access
An E-pipe is configured with a service MTU of 5000. What value will be derived for the VC- MTU?
Which of the following about VPRN route targets is FALSE?
Route targets identify the egress SAP of a service towards a CE.
What Alcatel-Lucent 7750 SR OAM tool can be used to verify the end-to-end connectivity of a service?
Which of the following statements best describes the main difference between an Ipipe and an Epipe interworking?
An Ipipe is used for performing Ethernet interworking with ATM/FR/PPP using routed-PDUs. An Epipe interworking is used for performing Ethernet interworking with ATM/FR/PPP using bridged-PDUs.
Which of the following best describes the flooding of traffic on a PE when unknown traffic is received on a SAP of a VPLS?
Traffic is flooded to all SAPs, spoke SDPs, and mesh SDPs in the service.
A technician sitting in a Network Operations Center would like to set up a remote mirror on an Alcatel-Lucent 7750 Service Router to examine some data traffic ingressing a port at a remote site. Which of the following are required? (Choose 2)
A mirror destination on the local and remote Alcatel-Lucent Service Router,
An SDP between the local and remote Alcatel-Lucent Service Routers.
Which of the following encapsulation types on an Ethernet port support the provisioning of multiple SAPs? (Choose 2)
How many service labels must be signaled to bring up a fully-meshed VPLS among five PE routers?
Which of the following statements are TRUE about configuring a SDP between an IES and a VPLS? (Choose 2)
The SDP must be a spoke.
The Layer 2 MTUs must match between the IES and the VPLS
Which of the following statements about SAPs that are part of a VPVVS is FALSE?
Only one SAP is required for a service that originates and terminates on the same Alcatel- Lucent 7750 SR.
Which of the following about transport and service tunnels is FALSE?
A local service requires a transport tunnel.
Which of the following statements are TRUE regarding sdp-ping? (Choose 3)
Provides in-band uni-directional connectivity tests.
Provides in-band round-trip connectivity tests.
Tests ability of reaching the far-end IP address of an SDP ID within the SDP encapsulation.
Which of the following SAPs can be used so that only untagged frames and frames with a VLAN tag of 0 are accepted?
This output is from router R4. Service 333 is a VPLS. Why might the peer 10.10.10.1 have the same value for IngLbl and EgrLbl?
The labels are of local significance only, so other routers can use the same value.
On the Alcatel-Lucent 7750 SR, which of the following statements about MP-BGP used for a VPRN is TRUE?
MP-BGP is an enhanced version of BGP that can carry customer route prefixes for multiple VPRNs.
VPWS allows carriers to offer services such as point-to-point frame-relay, ATM, and Ethernet on a single platform without the need for multiple overlay networks.
Which of the following commands is used in an RSVP signaled MPLS tunnel to validate the path MTU based on signaling across the LSP?
What is a key benefit of a VPLS service?
All of the above.
An IPv4 MPLS provider network is being configured for 6VPE. BGP is being used for the PE- CE protocol to exchange IPv6 routes. Which of the following is FALSE?
The provider network core must be configured to support IPv6.
A transport tunnel can either use an MPLS or GRE encapsulation.
All services mapped to an SDP use the same transport encapsulation type (either GRE or MPLS)
When configuring an IES spoke termination to a VPLS, what must be explicitly configured in order for the service to come up? (Choose 2)
MTU must match on both services,
Spoke-SDP with matching vc-id configured.
On an Alcatel-Lucent 7750 SR, why must the MTU be explicitly set when configuring an IES spoke termination to a VPLS?
By default, an IES uses an MTU based on the network port.
Which of the following best describes how a MAC FDB is populated in a VPLS service?
The router reads the source MAC address of frames passing through the service.
Which command provides a summary status of the VPLS service 100?
show service id 100 base
A Cpipe supports both structured and unstructured frames.
Which of the following about VPRNs is TRUE?
Service providers only need to perform configurations on the PEs to add additional VPRNs.
On an Alcatel-Lucent 7750 SR, the OAM command 'svc-ping' can be used with options bcal-sdp' and 'remote-sdp'. Which of the following is TRUE?
'Iocal-sdp' indicates that the ping is sent in-band, and remote-sdp' indicates the return ping is in-band.
Which VPWS service would be used to create a point-to-point Frame Relay service?
Which of the following about the Alcatel-Lucent 7750 SR sdp-ping is TRUE?
It tests in-band, uni-directional or round-trip connectivity of SDPs.