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For the Inter-AS model B VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1? For the Inter-AS model B VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1? A) PE2 pushes one label on the IP packet and forwards it to ASBR2. B) ASBR2 forwards the IP packet with one label to ASBR1. C) ASBR1 forwards the IP packet with two labels to PE1. D) PE1 forwards an unlabeled IP packet to CE1.


A) PE2 pushes one label on the IP packet and forwards it to ASBR2.
B) ASBR2 forwards the IP packet with one label to ASBR1.
C) ASBR1 forwards the IP packet with two labels to PE1.
D) PE1 forwards an unlabeled IP packet to CE1.

Correct Answer

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For periodic traffic between hosts, which of the following statements about the use of remote and local age timers is TRUE on the Nokia 7750 SR?


A) The lower the age-time, the higher the probability of flooding of unknown traffic.
B) The higher the age-time, the higher the probability of flooding of unknown traffic.
C) The local and remote age timers are, by default, the same value.
D) There is no relationship between the age-timers and the probability of flooding of unknown traffic.

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What is PBB also known as?


A) H-VPLS
B) IEEE 802.1ag
C) MAC aggregation
D) MAC-in-MAC

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A Carrier Supporting Carrier (CSC) VRPN is configured on a Nokia 7750 SR for a customer carrier who is an Internet Service Provider (ISP) . Which of the following configuration steps is NOT required? A Carrier Supporting Carrier (CSC) VRPN is configured on a Nokia 7750 SR for a customer carrier who is an Internet Service Provider (ISP) . Which of the following configuration steps is NOT required? A) Configuring labeled eBGP sessions between CSC-CE and CSC-PE routers. B) Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider. C) Configuring labeled iBGP sessions between PEs residing in different customer carrier sites. D) Advertising the received system addresses of remote PEs using either iBGP or IGP/LDP within each customer carrier site.


A) Configuring labeled eBGP sessions between CSC-CE and CSC-PE routers.
B) Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.
C) Configuring labeled iBGP sessions between PEs residing in different customer carrier sites.
D) Advertising the received system addresses of remote PEs using either iBGP or IGP/LDP within each customer carrier site.

Correct Answer

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According to the SAP-egress policy configured and applied, which queue will AF traffic use? According to the SAP-egress policy configured and applied, which queue will AF traffic use? A) Queue 3, because it is explicitly defined in the SAP-egress policy. B) Queue 2, because it is explicitly configured in the queue-group template. C) The default, queue 1, because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template. D) AF traffic is dropped because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.


A) Queue 3, because it is explicitly defined in the SAP-egress policy.
B) Queue 2, because it is explicitly configured in the queue-group template.
C) The default, queue 1, because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.
D) AF traffic is dropped because there is a mismatch between the mapping in the SAP-egress policy and in the queue-group template.

Correct Answer

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The following VPLS services have been configured. Which of the following statements is TRUE? The following VPLS services have been configured. Which of the following statements is TRUE? A) All untagged frames will be forwarded to VPLS 1. B) All frames with more than one VLAN tag will be dropped. C) A frame with an outer VLAN tag of 300 and inner VLAN tag of 100 will be forwarded to VPLS 2. D) A frame with a single VLAN tag of 500 will be forwarded to VPLS 1. E) A frame with an outer VLAN tag of 500 and inner VLAN tag of 300 will be forwarded to VPLS 3.


A) All untagged frames will be forwarded to VPLS 1.
B) All frames with more than one VLAN tag will be dropped.
C) A frame with an outer VLAN tag of 300 and inner VLAN tag of 100 will be forwarded to VPLS 2.
D) A frame with a single VLAN tag of 500 will be forwarded to VPLS 1.
E) A frame with an outer VLAN tag of 500 and inner VLAN tag of 300 will be forwarded to VPLS 3.

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A Carrier Supporting Carrier (CSC) VPRN is configured on a Nokia 7750 SR for a customer carrier offering VPRN services. Which of the following about this configuration is FALSE? A Carrier Supporting Carrier (CSC) VPRN is configured on a Nokia 7750 SR for a customer carrier offering VPRN services. Which of the following about this configuration is FALSE? A) In the CSC VPRN, configure an eBGP session between CSC-PE and CSC-CE and use the CLI command advertise-label vpn-ipv4 to enable the advertisement of VPN-IPv4 routes. B) When the customer carrier uses the same autonomous system number in various sites, use the CLI command loop-detect off to disable the loop detection functionality on CSC-CE and PE routers. C) On the CS?-PE routers, use the CLI command carrier-carrier-vpn to configure the VPRN service as CSC. D) Configure an iBGP session between PE1 and PE2 and use the CLI command family vpn-ipv4 to directly exchange end-customer routes learned from CE1 and CE2.


A) In the CSC VPRN, configure an eBGP session between CSC-PE and CSC-CE and use the CLI command "advertise-label vpn-ipv4" to enable the advertisement of VPN-IPv4 routes.
B) When the customer carrier uses the same autonomous system number in various sites, use the CLI command "loop-detect off" to disable the loop detection functionality on CSC-CE and PE routers.
C) On the CS?-PE routers, use the CLI command "carrier-carrier-vpn" to configure the VPRN service as CSC.
D) Configure an iBGP session between PE1 and PE2 and use the CLI command "family vpn-ipv4" to directly exchange end-customer routes learned from CE1 and CE2.

Correct Answer

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


A) MP-iBGP sessions must be configured between the PE routers in each AS.
B) LDP must be configured in each AS.
C) MP-eBGP sessions must be configured between the ASBRs.
D) The ASBRs must be configured with "enable-inter-as-vpn".

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RSTP is running in the network. Which port will become the alternate port? RSTP is running in the network. Which port will become the alternate port? A) Bridge B 1/1/3 B) Bridge B 1/1/2 C) Bridge D 1/1/1 D) Bridge D 1/1/3 E) Bridge E 1/1/1 F) Bridge E 1/1/3


A) Bridge B 1/1/3
B) Bridge B 1/1/2
C) Bridge D 1/1/1
D) Bridge D 1/1/3
E) Bridge E 1/1/1
F) Bridge E 1/1/3

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Which of the following about a Nokia 7750 SR MP-BGP update is FALSE? Assume default behavior.


A) An MP-BGP update carries an MPLS label that is used as the service label for a VPRN.
B) There can be multiple Route Targets per route in an MP-BGP update.
C) There can only be one Route Distinguisher per route in an MP-BGP update.
D) On a specific PE, the MP-BGP updates for prefixes from a single VPRN carry different labels.
E) Traditional BGP attributes and MP-BGP attributes are present in an MP-BGP update.

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Which of the following statements regarding BGP FRR is FALSE?


A) The router must receive several BGP routes to compute a backup path.
B) BGP FRR can be triggered by BFD.
C) The backup path can use the same next-hop as the primary path.
D) BGP peer-tracking can be used to improve BGP FRR failure detection times.

Correct Answer

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Which of the following is a characteristic of using a spoke SDP in an H-VPLS design?


A) Simplifies signaling.
B) Increases requirement for replication.
C) Increases MDU configuration complexity.
D) Increases the complexity of an inter-domain connectivity solution.

Correct Answer

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Community lists are configured for the PE hub and spoke VPRN. Which communities should be imported by the VPRN service on PE1? Community lists are configured for the PE hub and spoke VPRN. Which communities should be imported by the VPRN service on PE1? A) Spoke_Sites B) Hub_Site C) Spoke_Sites and Hub_Site D) No communities should be imported.


A) "Spoke_Sites"
B) "Hub_Site"
C) "Spoke_Sites" and "Hub_Site"
D) No communities should be imported.

Correct Answer

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For the inter-AS model A VPRN, BGP is used as the PE-CE routing protocol. Which of the following statements about the control plane operation is TRUE? For the inter-AS model A VPRN, BGP is used as the PE-CE routing protocol. Which of the following statements about the control plane operation is TRUE? A) PE1 sends an IPv4 update for prefix 192.168.1.0/27 via MP-BGP to ASBR1. B) ASBR1 sends an IPv4 update for prefix 192.168.1.0/27 ASBR2. C) ASBR1 transforms an IPv4 update for prefix 192.168.1.0/27 to a VPN-IPv4 route and allocates VPN label V1 and sends the update to ASBR2. D) ASBR2 accepts a VPN-IPv4 update from ASBR1, then sends the update to PE2 via MP-BGP.


A) PE1 sends an IPv4 update for prefix 192.168.1.0/27 via MP-BGP to ASBR1.
B) ASBR1 sends an IPv4 update for prefix 192.168.1.0/27 ASBR2.
C) ASBR1 transforms an IPv4 update for prefix 192.168.1.0/27 to a VPN-IPv4 route and allocates VPN label V1 and sends the update to ASBR2.
D) ASBR2 accepts a VPN-IPv4 update from ASBR1, then sends the update to PE2 via MP-BGP.

Correct Answer

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A Nokia 7750 SR is configured with a policy to export directly connected networks to BGP. Which of the following commands verifies that the export was successful?


A) show router route-table
B) show router bgp routes
C) show router bgp routes <prefix> hunt
D) show router bgp neighbor <ip-address> received-routes

Correct Answer

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Which of the following statements about a Management VPLS is TRUE?


A) Operates in transparent mode.
B) Inherits SAP and SDP state from uVPLS.
C) Does not carry customer traffic.
D) Runs one instance of RSTP per VPLS.

Correct Answer

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Which of the following is a benefit of a hub and spoke VPRN topology?


A) Reduced number of VPN tunnels that need to be managed.
B) Optimal routing between all sites.
C) Limited configuration required on the hub PE device.
D) Site to site redundancy support.

Correct Answer

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