Trusted Nokia 4A0-C02 Exam Dumps – Avoid Costly Exam Retakes

Question No: 1

MultipleChoice

Why is MAC explosion a factor to be considered when designing a large VPLS network? (Select 2)

Options

AThe time to relearn thousands of MAC addresses may result in excessive flooding or loss of packets.

BIf the FDB reaches the limit, the router will discard frames.

CDiscarding frames when the FDB limit is reached could deny SLA guarantees.

DIt could take several seconds to relearn thousands of MAC addresses denying QoS/SLA guarantees.

Question No: 2

MultipleChoice

Which option best statements are TRUE when discussing self-generated traffic QoS? (Choose two)

Options

AIn order to mark Layer 2 traffic, sgt-qos will set various ToS bits.

BDSCP bits can be set per application, per routing instance.

CThe DSCP marking stays nc1 for all applications. Only the internal FC is manipulated across different applications.

DIn order to mark Layer 2 self-generated traffic, network interfaces must be set to dot1Q.

EThe internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.

Question No: 3

MultipleChoice

Click the exhibit button below.

Based on the configuration of the network policy (below), what will be the forwarding class associated with a MPLS encapsulated customer packet that arrives on a dotlQ encapsulated network port 1/1/4:1 on P1 with the following characteristics:

EXP value = 6

DSCP value = cs1

Dot1pvalue = 3

Options

AEF

BH1

CL1

DH2

EL2

Question No: 4

MultipleChoice

If Route Reflector 1 (RR1) is used for Internet routes, and Route Reflector 2 (RR2) is used for VPN routes, which of the following is TRUE?

Options

ABGP sessions established between RR2 and the PEs support IPv4 and VPN-IPv4 address families.

BBGP sessions established between RR1 and the PEs support the IPv4 address family only.

CBGP sessions established between RR1 and the PEs support IPv4 and VPN-IPv4 address families.

DBGP sessions established between RR2 and the PEs support the IPv4 address family only.

Question No: 5

MultipleChoice

A router receives two routes from its neighbors: a route from OSPF for 10.0.0.0/24, and a route from BGP for 10.0.0.0/8. Both routes have reachable next hops. Which of the following is TRUE?

Options

AOnly the BGP route is in the route table.

BBoth routes are in the route table.

CNone of the routes is in the route table.

DOnly the OSPF route is in the route table.

Question No: 6

MultipleChoice

A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS path of 65600 65300 and a local preference of 200. Which route will appear in the RIB-In?

Options

AOnly the first route will appear in the RIB-In.

BOnly the second route will appear in the RIB-In.

COnly the third route will appear in the RIB-In.

DAll routes will appear in the RIB-In.

Question No: 7

MultipleChoice

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?

Options

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

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

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

DConfiguring an IES service on PEL

Question No: 8

MultipleChoice

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

Options

APE2 pushes one label on the IP packet and forwards it to ASBR2.

BASBR2 forwards the IP packet with one label to ASBR1.

CASBR1 forwards the IP packet with two labels to PEL

DPE1 forwards an unlabeled IP packet to CE1.

Question No: 9

MultipleChoice

For the inter-AS model C VPRN, which router is configured as shown?

Options

APE1

BRR1

CASBR1

DASBR2

Question No: 10

MultipleChoice

For the inter-AS model C VPRN, which of the following statements about a data packet sent from CE1 toCE2isTRUE?

Options

APE1 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.

BASBR1 sends the data packet with one label: the BGP label.

CASBR1 sends the data packet with one label: the service label.

DASBR2 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.

Question No: 11

MultipleChoice

.

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 about this configuration is FALSE?

Options

AIn the CSC VPRN, configure an eBGP session between CSC-PE and CSC-CE and use the 'advertise-label vpn-ipv4' CLI command to enable the advertisement of VPN-IPv4 routes.

BWhen the customer carrier uses the same autonomous system number in various sites, use the 'loop-detect off' CLI command to disable the loop detection functionality on CSC-CE and PE routers.

COn the CSC-PE routers, use the 'carrier-carrier-vpn' CLI command to configure the VPRN service as CSC.

DConfigure an iBGP session between PE1 and PE2 and use the 'family vpn-ipv4' CLI command to directly exchange end-customer routes learned from CE1 and CE2.

Question No: 12

MultipleChoice

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). Which route is NOT present in PE1's global routing table?

Options

A192.60.100.0

B10.10.10.6

C10.10.10.3

D192.50.1.1

Question No: 13

MultipleChoice

For the Carrier Supporting Carrier (CSC) VPRN, which routes are advertised between CSC-CE1 andCSC-PE1?

Options

AVPN-IPv4 routes for all PE system addresses in AS 1000

BBGP labeled IPv4 routes for all PE system addresses in AS 1000

CVPN-IPv4 routes for all PE system addresses in AS 5000

DBGP labeled IPv4 routes for all PE system addresses in AS 5000

Question No: 14

MultipleChoice

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider. Which route is present in PE1's global routing table?

Options

A192.168.10.1

B192.168.20.1

C10.10.10.1

D10.10.10.6

Question No: 15

MultipleChoice

If the displayed command is executed, what is the correct value of AS-Path in the BGP route 172.12.0.0/16 advertised by PE2?

Options

A64491 {64492 64493}

B64491

C64492 64493 64491

D{64492 64493)64491

Question No: 16

MultipleChoice

An Alcatel-Lucent 7750 SR is to be configured as a PE router that supports VPRNs using LDP as the transport protocol. Which of the following best describes this configuration?

Options

AThis configuration is correct and complete.

BThis configuration is correct, except that the system interface must be added.

CThis configuration is correct, except that the interfaces facing the CE routers must be added.

DMPLS configuration is not required.

Question No: 17

MultipleChoice

The AS-path nullification method is used to prevent CE2 from discarding routes received from CE1. On which router should the AS-path nullification policy be configured?

Options

ACE1

BPE2

CPE1

DCE2

Question No: 18

MultipleChoice

AS-override is configured on PE1 to eliminate the BGP loops. What is the expected AS-Path in the VPN-IPv4 route 64496:10:192.168.2.0/27 received by PE1?

Options

A64496 64497

B64496

C64497

D64497 64497

Question No: 19

MultipleChoice

The headquarter sites of VPRN 10 and VPRN 20 ate part of an extranet VPRN. Which of the following communities are included in the export policy applied to VPRN 10 on router R1?

Options

A'Extranet-VPN-Blue' and 'Extranet-VPN-Green'

B'Blue-Only'

C'Extranet-VPN-Blue'

D'Blue-Green'

Question No: 20

MultipleChoice

For the PE hub and spoke VPRN, which communities should be imported under the VPRN service on PE2?

Options

A'Spoke.Sites' and 'Hub_Site'

B'Hub_Site'

C'Spoke_Sites'

DNo communities should be imported

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