4A0-106 Online Practice Questions and Answers

Which of the following describes how a route is handled when is received at the PE from the local CE?

A. It will be placed into the customer VRF and automatically propagated into the BGP table

B. It will be placed into the customer VRF and then be propagated to the BGP table only if BGP is used as the PE-CE protocol

C. It will be placed into the customer VRF and require an export policy to be propagated to the BGP table

D. It will be placed into the customer VRF and require an export policy to be propagated to the BGP table if RIP is used as the PE-CE protocol

E. It will be placed into the customer VRF and require an export policy to be placed into the BGP table if a protocol other than BGP is used as the PE-CE protocol

Where are VPN-IPv4 addresses used in a VPRN?

A. In the routing updates exchanged from CE to PE

B. In the routing updates exchanged from PE to PE

C. In the routing updates exchanged from P to PE

D. In customer packets as they traverse the provider core

E. In all route tables of the VPRN control plane

Which single command will verify the state of auto-bind, the configured Route Distinguisher and Route Target, in addition to the SAP and SDP bindings for a particular service on an Alcatel-Lucent 7750 SR?

A. Show service all

B. Show service id detail

C. Show service id base

D. Show service id bindings

E. Show service sap-using

Which of the following best describes the goal of an Extranet VPRN?

A. Allow routes to be exchanged between all or selected sites of one VPRN and all or selected sites of a second VPRN

B. Allow the service provider to provide multiple VPRNs with Internet access

C. Reduce the number of VPRN tunnels required

D. Simplify the administration of multiple VPRNs

E. Force all traffic in multiple VPRNs to pass through a single device

When does a router add a Route Target to a route?

A. When the P receives the route from the PE.

B. When the PE populates the route received from the CE into the VRF.

C. When the PE propagates the route to the CE.

D. When the PE exports the route from the VRF into the MP-BGP table.

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-CE1 pops the LDP label and pushes a BGP label.

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

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

Click the exhibit.

For the Carrier Supporting Carrier (CSC) VPRN, which routes are advertised between CSC-CE1 andCSCPE1?

A. VPN-IPv4 routes for all PE system addresses in AS 1000

B. BGP labeled IPv4 routes for all PE system addresses in AS 1000

C. VPN-IPv4 routes for all PE system addresses in AS 5000

D. BGP labeled IPv4 routes for all PE system addresses in AS 5000

Click the exhibit.

Which of the following statements about the implementation of the CE hub and spoke topology is FALSE?

A. PE1 advertises spoke routes to CE1.

B. The primary VRF on PE1 is used to route data packets from the hub CE to the spoke sites.

C. The secondary VRF on PE1 contains routes learned from the spoke sites.

D. Spoke sites do not learn routes from other spoke sites directly.

Which of the following about inter-AS model C VPRN is FALSE?

A. ASBRs exchange labeled IPv4 routes for the system addresses of PE routers.

B. It requires a route reflector to be configured in each AS for successful operation.

C. VPN-IPv4 routes are neither maintained nor distributed by the ASBRs.

D. PE routers in different ASes exchange VPN-IPv4 routes directly between each other using MP-eBGP.

Click the exhibit.

For the inter-AS model C VPRN, how many labels does PE1 push on a data packet received from CE1 and destined to CE2?

A. 1

B. 2

C. 3

D. 4