4A0-106 Online Practice Questions and Answers

VPN-IPv4 addressing is made unique by defining an address structure consisting of:

A. A 32 bit IPv4 address followed by a 64 bit Route Target

B. A 32 bit IPv4 address followed by a 64 bit Route Distinguisher

C. A 64 bit Route Target followed by a 32 bit IPv4 address

D. A 64 bit Route Distinguisher followed by a 32 bit IPv4 address

E. A 32 bit Route Distinguisher followed by a 32 bit IPv4 address FA 32 bit Route Target followed by a 32 bit IPv4 address

What is the purpose of the Route Distinguisher?

A. It defines the VPN membership

B. It defines which routes are imported into the vrf

C. It defines which routes are exported from the vrf

D. It is used to make IPv4 addresses unique

E. It is used as the VPN label

When configuring a VPRN service on an Alcatel-Lucent 7750 SR, where should the following policy be applied?

A. On the CE under the RIP context

B. On the PE under the BGP context

C. On the PE under the RIP context

D. On the CE under the BGP context

E. This policy is not required

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider. If CE1 sends an IP packet to 192.168.200.1, which of the following is FALSE?

A. CE1 forwards the data packet to PE1 via the VPRN 20 interface.

B. PE1 pushes two labels on the IP packet: a BGP label and an LDP transport label.

C. CSC-CE1 pops the LDP label and swaps the BGP label.

D. CSC-PE1 pops the BGP label and pushes a VPN label and an MPLS transport label.

VPN-IPv4 addressing is made unique by defining an address structure consisting of:

A. A 64-bit Route Target followed by a 32-bit IPv4 address.

B. A 64-bit Route Distinguisher followed by a 32-bit IPv4 address.

C. A 32-bit Route Distinguisher followed by a 32-bit IPv4 address.

D. A 32-bit Route Target followed by a 32-bit IPv4 address.

Click the exhibit.

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

A. Creating an export policy on CSC-CE1 and CSC-CE2 to advertise local PE addresses to the network provider.

B. Configuring eBGP between CSC-CE and CSC-PE routers; setting the address family to IPv4; and enabling the advertisement of labels for IPv4 routes.

C. Configuring iBGP between PE and CSC-CE within each customer carrier site; setting the address family to IPv4; and enabling the advertisement of labels for IPv4 routes.

D. Configuring MP-iBGP between PE1 and PE2; setting the address family to IPv4; and enabling the advertisement of labels for IPv4 routes.

Click the exhibit.

For the CE hub and spoke VPRN, which of the following is FALSE?

A. The primary VRF on PE1 contains routes learned from spoke sites.

B. All traffic between spoke sites must pass through CE1.

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

D. PE1 advertises the primary VRF routes to CE1.

For the Inter-AS model A VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1?

A. CE2 forwards an unlabeled IP packet to PE2 via the VPRN interface.

B. PE2 pushes one label on the IP packet and label-switches it to ASBR2.

C. ASBR2 forwards an unlabeled IP packet to ASBR1.

D. ASBR1 pushes two labels on the IP packet and label-switches the packet to PE1.

For the Inter-AS model VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1?

A. PE2 pushes two labels on the IP packet and forwards it to ASBR2.

B. ASBR2 forwards the IP packet with one label to ASBR1.

C. ASBR1 label-switches the packet and forwards it with one label to PE1.

D. PE1 forwards an unlabeled IP packet to CE1.

Which of the following statements about Inter-AS model VPRN is TRUE?

A. MP-iBGP is used between PE1 and ASBR1 to exchange VPN-IPv4 routes.

B. eBGP is used between ASBR1 and ASBR2 to exchange IPv4 routes.

C. MP-eBGP is used between PE1 and PE2 to exchange VPN-IPv4 routes.

D. MP-eBGP is used between ASBR1 and ASBR2 to exchange labeled IPv4 routes.