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Nokia 4A0-C02 - Nokia SRA Composite Exam

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Page: 9 / 13
Total 639 questions

Which of the following devices would typically have VRF instances?

A.

Any CE device

B.

Any PE device

C.

Any P device

D.

Any router in the service provider core

E.

Any customer router

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier who is an Internet Service Provider (ISP). Which of the following configuration steps is NOT required?

A.

Configuring iBGP sessions between PEs residing in different customer carrier sites,

B.

Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

C.

Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-CE.

D.

Configuring an IES service on PEL

When VPRN Outbound Route Filtering (ORF) is enabled, each PE sends its ORF list to its peer using which of the following BGP message types?

A.

Open

B.

Update

C.

Route Refresh

D.

Notification

Which of the following terms also correctly describes a Layer 3 VPN?(Choose three)

A.

VPRN

B.

BGP/MPLS VPN

C.

VLL

D.

VPLS

E.

IP-VPN

F.

ePipe

Click the exhibit.

Internet access is provided to the Red VPRN (ID 10) via an Internet VRF (ID 500). For this configuration, which communities must be imported on the Red and Internet VRFs?

A.

Red VRF imports only "Internet"

Internet VRF imports only "Red-Only"

B.

Red VRF imports "Internet" and "Red-Only"

Internet VRF imports only "Red-Only"

C.

Red VRF imports only "Red-Only"

Internet VRF imports "Red-Only" and "Internet"

D.

Red VRF imports "Internet" and "Red-Only"

Internet VRF imports only "Internet"

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). If CE1 sends an IP packet to 192.60.100.1, which of the following is FALSE?

A.

PE1 pushes an LDP transport label.

B.

CSC-PE1 pops the BGP label and pushes two labels: a VPN label and an MPLS transport label.

C.

CSC-PE2 pops the MPLS transport label and pushes a BGP label.

D.

CSC-CE2 pops the BGP label and pushes an LDP transport label.

When would it be appropriate to use the as-override command?

A.

When sites of different VPRN customers use the same BGP AS number

B.

When sites of the same VPRN customer use the same BGP AS number

C.

When sites of different VPRN customers use different BGP AS numbers

D.

When sites of the same VPRN customer use different BGP AS numbers

E.

When the customer site AS number is the same as the provider AS number

Click the exhibit.

For the Inter-AS model B VPRN, which of the following about the inter-as-label output on ASBR1 is TRUE?

A.

ASBR1 includes label 131069 in the route update sent to ASBR2.

B.

ASBR1 includes label 131068 in the route update sent to ASBR2.

C.

ASBR1 includes label 131068 in the route update sent to PEL

D.

ASBR1 includes labels 131068 and 131069 in the route update sent to ASBR2.

In a VPRN, how does the service provider ensure that customer addresses are unique when multiple customers use the same address space?

A.

It is the customer responsibility to ensure their address space is unique

B.

The Route Distinguisher ensures that addresses are unique between customers.

C.

The Route Target ensures that addresses are unique between customers

D.

The provider will advise the customers to change their addresses

E.

The provider will use NAT to ensure that addresses are unique between customers

Click the exhibit.

PE3 learns Internet routes via its VRF interface to the Internet peering router and stores them in its Internet VRF. CE1 is connected to the Red VPN and requires Internet access via its Red VRF interface. Which of the following statements do not fulfill this requirement?

A.

PE1 advertises the Red VPN routes and a default route to PE3.

B.

The Internet VRF on PE3 imports the Red VPN routes advertised by PE1.

C.

PE1 imports all Internet routes and advertises them to CE1 via the Red VRF.

D.

PE3 advertises a default route from its Internet VRF instead of advertising all Internet routes.

Why would a selective export policy be applied to a customer VPRN service? (Choose three)

A.

To limit the number of routes advertised from a customer site

B.

To limit the number of routes learned from other customer sites CTo limit the size of the VRF table

C.

To limit connectivity to selected customer networks

D.

To perform packet filtering

Which method does the Alcatel-Lucent 7750 SR use for the allocation of VPRN labels?

A.

One label per route

B.

One label per next-hop

C.

One label per VRF

D.

One label per prefix

E.

One label per tunnel

Click the exhibit.

The displayed output is from an ASBR supporting an inter-AS model A VPRN. Which of the following statements about this output is TRUE?

A.

The neighbor shown is an ASBR router.

B.

The address family between the peers should be VPN-IPv4 instead of IPv4.

C.

The neighbor address cannot be the interface address 10.3.4.4.

D.

The omitted AS number under "BGP summary" must be equal to 64496.

Which of the following VPRN label allocation methods are supported by the Alcatel-Lucent 7750 SR?

A.

One label per VRF per route

B.

One label per VRF per next-hop

C.

One label per VRF

D.

All of the above

E.

A and C

F.

B and C

For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is an ISP that provides Internet connectivity to its end-customers, which of the following is FALSE?

A.

All traffic exchanged between end-customers is carried over a single CSC VRF.

B.

Customer carrier PE routers residing in different sites must run eBGP between them to exchange customers' routes.

C.

The customer carrier network can be a pure IP network.

D.

MPLS can be used in the customer carrier network to improve scalability.