4A0-104 Nokia Services Architecture Questions and Answers

1500

1508

1514

1522

ADSPEC

CSPF

Service ping

LSP trace

show router route-table

show router Idp bindings

show service service-using

show service egress-label

show router rsvp session

L-LDP

T-LDP

RSVP-TE

MP-BGP

All services bound to the same SDP must be the same service type.

All services bound to the same SDP will have the same transport encapsulation.

Any operation on an SDP will affect all services bound to that SDP.

An SDP is used to direct traffic for a service from one router to another.

sap 1/1/1

sap 1/1/1:*.0

sap 1/1/1:0.*

1/1/1:0

1520

1540

1548

1556

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.

By default, a 7750 SR does not advertise all routes in the VRF to other PE routers.

By default, a 7750 SR advertises all routes in the VRF to a CE router.

TRUE

FALSE

The mirror destination configuration on PE5 is missing the "remote-source" command.

There needs to be a mirror source configuration on PE5 with the "remote-source" command.

This is not possible since the protocol analyzer is located at the Central Office. It needs to be at the customer site.

There needs to be a configuration command to put sap 1/1/3 on the mirror destination of PE5.

There needs to be a configuration command to put sap 1/1/3 on the mirror source of PE5

A VPRN is a Layer 3 service.

A PE maintains a separate forwarding table for each VPRN.

The service provider manages the customers IP addressing.

Multiple VPRNs can be deployed over the same IP/MPLS network infrastructure.

Configuring an Epipe service with a customer ID

Defining a SAP or SAPs.

Binding to an SDP if it is a distributed service.

Enabling the service using the no shutdown command.

Creating and assigning an IP filter to the SAP.

Configuring QoS parameters

It will show the hops taken between service endpoints.

It will test the delay across the service.

It will test the SDPs of a service in both directions.

It will test the round-trip connectivity of the service.

The VC ID on the mesh SDP must be explicitly configured.

The VC ID on the spoke SDP must be explicitly configured.

The VC ID on the mesh SDP does not have to be explicitly configured and it will use the service id.

The VC ID on the spoke SDP does not have to be explicitly configured and it will use the service id.

The labels are of local significance only, so other routers can use the same value.

10.10.10.1 has yet to send its own unique label.

Router R4 is using the same tunnel to send and receive to 10.10.10.1.

The service on 10.10.10.1 is down, so it is rejecting packets.

F-pipes use SAPs in the form of port: DLCI (e.g. 1/2/3:65).

To the customer, the PE appears as a native Frame Relay UNI (User Network Interface).

Multiple Frame Relay circuits can be mapped to a single F-pipe service on the Alcatel-Lucent 7750 SR.

The MPLS control word is required because the Frame Relay header is not encapsulated in the frame.

When a PE router receives an IPv4 prefix from its local CE, it creates a VPN-IFV4 prefix.

VPN-IPv4 allows BGP to distinguish between duplicate prefixes originating from different customers.

In a VPRN, data traffic is carried in packets that have VPN-IPv4 addresses.

VPN-IFV4 addresses are only present within the service provider network.

configure router sdp sdp-id

configure service sdp sdp-id create

configure service mpls sdp sdp-id create

configure service gre sdp sdp-id create

configure service sdp sdp-id mpls create

Route distinguishes are 12 bytes in length

Route distinguishes are appended to IPv4 prefixes to form 16 byte VPN-IFV1 prefixes.

Route distinguishes are used to determine which routes a VPRN should import.

CE routes must be configured with the proper route distinguishes for the VPRN they are associated to

All of the above statements are true.

All of the above statements are false.

A VRF contains a single VPRN routes.

Every VRF in a PE is associated with one or more route target attributes.

Each VPRN needs a separate VRF in each PE router.

On the 7750 SR, by default, there is a unique one-to-one association between a VPN label and a VRF

All of the above statements are true.

All of the above statements are false.

When an Alcatel-Lucent Service Router is rebooted, the mirror destination and mirror source must be re-configured

A mirror destination is shut down by default on an Alcatel-Lucent Service Router.

A mirror source is shut down by default on an Alcatel-Lucent Service Router.

When an Alcatel-Lucent Service Router is rebooted, the mirror destination must be re-configured.

When an Alcatel-Lucent Service Router is rebooted the mirror source must be re-configured.

TRUE

FALSE

show service id 100 base

show service vpls 100

show service vpls 100 summary

show service vpls 100 all

None of the above.

A-pipe

C-pipe

E-pipe

F-pipe

Yes. A routing policy is required to advertise routes between PE routers in a VPRN

No. A routing policy is not required; the default behavior on the 7750 SR is to advertise all VPRN routes between PE routers.

A routing policy is required only when BGP is used as the PE-CE routing protocol, as shown in the exhibit.

A CE1 system interface can not be advertised to PE2 since the CE routers are not aware of the VPRN.

The SDP must be a mesh

The SDP must be a spoke.

Once the SDP is configured on both PE routers, both the services will be operationally up without further configuration changes.

The Layer 2 MTUs must match between the IES and the VPLS

The Layer 2 MTU must be 14 bytes smaller on the VPLS than it is on the IES.

TRUE

FALSE

Shut down all SAPs associated with the service.

Shut down all SDPs associated with the service.

Delete all SAPs and SDPs associated with the service.

Shut down all physical ports that are bound to a SAP.

Delete the Customer ID.

Shut down the service.

TRUE

FALSE

The frame is dropped.

The service ID is added as the VLAN tag.

A VLAN tag of 0 is added as the provider VLAN tag

The frame is forwarded with no VLAN tag

A route target is a BGP extended community used to identify the VRF table for a prefix at the receiving PE

A route target is a mechanism from which VPRN controls the distribution of VPN routing information.

Route target attributes are earned in a MP-BGP as attributes of the route.

A route target is used by the PE router to identify the VRF that a VPN-lPv4 prefix is associated with.

All of the above statements describe a route target

None of the above statements describe a route target

PE1>config>service>vpm>bgp#info

---------------------------------------------------

group "toCE1"

family ipv6

export "mbgp-bgp"

neighbor 2001:db8:12::1

peer-as 64497

exit

exit

PE1>config>service>vpm>bgp#info

---------------------------------------------------

group "toCE1"

family ipv6

export "mbgp-bgp"

neighbor 2001:db8:12:1

peer-as 64496

exit

exit

PE1>config>router>bgp#info

---------------------------------------------------

group "toCEl"

family ipv6

export "mbgp-bgp"

neighbor 2001 db8:12::1

peer-as 64497

exit

exit

PE1>config>router>bgp#info

---------------------------------------------------

group "toCE1"

family ipv6

export "mbgp-bgp"

neighbor 2001:db8:12::1

peer-as 64496

exit

exit

TRUE

FALSE

They reduce the number of SDPs that need to be configured.

They can be used to work around physical topologies that prevent a fully meshed deployment.

They prevent loops that can be introduced by mesh deployments.

They can simplify the implementation of security policy enforcement and packet inspection.

ADSPEC sets an SDP's MTU to the smallest MTU value found along the LSP path.

RSVP must be enabled on all MPLS routers of a path to use ADSPEC.

ADSPEC can automatically adjust the service MTU.

ADSPEC can be enabled on individual LSPs.

A PE uses the same VRF table for all the VPRN services on it.

A PE uses a VRF to maintain forwarding information.

Information for VRFs can be advertised between PEs by MP-BGP.

A PE uses a VRF to route traffic to CEs.

The original VLAN tag is removed.

The original VLAN tag is kept.

The VLAN tag is replaced by a provider tag.

The VLAN tag is kept and a provider tag is added.

LDP

BGP

MP-BGP

MPLS

Isp-trace

Idp-trace

Sdp-ping

Svc-ping

Ping

The PE routers of the service are responsible for learning MAC addresses.

Flooding ensures that all PEs in a fully-meshed VPLS will learn the source address of all traffic.

MAC learning reduces flooding of frames with previously learned addresses.

Multiple VPLSes on the same PE share the same MAC FDB.