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  • Exam Name: Nokia SRA Composite Exam
  • Last Update: Mar 27, 2024
  • Questions and Answers: 639
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4A0-C02 Nokia SRA Composite Exam Questions and Answers

Question # 6

The operation of a VPLS can be best described by which of the following statements?

A.

A frame should be sent to the PE that connects to the target site whenever possible.

B.

A frame should be flooded as little as possible.

C.

Customer frames should be switched based on the destination MAC address.

D.

All of the above.

E.

Only (a) and (b) are true.

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Question # 7

Click on the exhibit below.

4A0-C02 question answer

The VPLS service MTU on R2 is 1514 bytes. What must the service MTU be on all other routers participating in the VPLS?

A.

The service MTU must be equal to or smaller than 1514 bytes.

B.

The service MTU must be 1514 bytes.

C.

The service MTU must be equal to or greater than 1514 bytes.

D.

The service MTU can be any value.

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Question # 8

Click on the exhibit below.

4A0-C02 question answer

How many LSPs are required in total between Metro A and Metro B if 100 hierarchical VPLS services are deployed across the two metro networks?

A.

100

B.

200

C.

1

D.

2

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Question # 9

What action will be taken when an MPLS router receives a frame with a label that does not exist in the LFIB?

A.

The frame will be flooded.

B.

The frame will be discarded.

C.

The frame will be fragmented.

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Question # 10

Click on the exhibit below.

4A0-C02 question answer

If the device connected to PE-A in Metro A sends a frame to PE-A that requires replication within the VPLS which devices is PE-A responsible for replicating the frame to?

A.

PE-A must replicate the frame to all devices participating in the VPLS

B.

PE-A must replicate the frame to all PEs within Metro A

C.

PE-A must replicate the frame to all devices in the Metro A

D.

All of the above

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Question # 11

Click on the exhibit below.

4A0-C02 question answer

Which bridge will become the root bridge?

A.

Bridge B

B.

Bridge C

C.

Bridge D

D.

Bridge E

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Question # 12

Redundant spoke-SDPs are used between 2 Metro networks for redundancy. How can load balancing be achieved across the redundant spoke-SDPs?

A.

A single management VPLS using RSTP can be used to block different SDPs for different VPLS services.

B.

A single management VPLS using 802.1D-2004 can be used to block different SDPs for different VPLS services

C.

There is no way to have load balancing across redundant spoke-SDPs.

D.

Two management VPLS using RSTP can be used to block different SDPs for different VPLS services.

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Question # 13

You are configuring a VPLS spoke termination to a VPRN on an Alcatel-Lucent 7750 SR. If LDP is used for all transport tunnels, what type of sessions are established by the VPRN PE router that is configured with the spoke termination?

A.

T-LDP and LDP sessions with the other VPRN PE routers and the VPLS PE router

B.

T-LDP sessions with the other VPRN PE routers and the VPLS PE router

C.

LDP sessions with the other VPRN PE routers and the VPLS PE router

D.

LDP sessions with the other VPRN PE routers, and both T-LDP and LDP sessions with the VPLS PE router

E.

T-LDP and LDP sessions with the other VPRN PE routers and LDP sessions with the VPLS PE router

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Question # 14

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

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Question # 15

Which of the following is not an available option for Route Distinguisher assignment?

A.

One Route Distinguisher per VRF route

B.

One Route Distinguisher per VRF

C.

One Route Distinguisher per VRF per site

D.

One Route Distinguisher per VPN

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Question # 16

Click the exhibit.

4A0-C02 question answer

For the Carrier Supporting Carrier (CSC) VPRN, which routes are advertised from CSC-CE1 toPE1?

A.

IGP/LDP or labeled BGP routes for all PE system addresses in AS 5000 Site B

B.

VPN-IPv4 routes for all PE system addresses in AS 5000 Site B

C.

IGP/LDP or labeled BGP routes for all PE system addresses in AS 1000

D.

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

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Question # 17

In a Carrier Supporting Carrier (CSC) VPRN, which of the following is a benefit to the network provider?

A.

No need to build and maintain its own backbone.

B.

The solution scales as the number of serviced customer carriers increases.

C.

The solution scales as the number of VPNs offered by the customer carriers increases.

D.

The ability to manage end-customer services.

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Question # 18

Click the exhibit.

4A0-C02 question answer

Routers RR1 and RR2 are configured as route reflectors. For the inter-AS model C VPRN, which of the following about the BGP sessions established between the routers is TRUE?

A.

ASBR2 has a total of three BGP sessions established: one with PE2, one with RR2, and one with ASBR1.

B.

RR1 has a total of three BGP sessions established: one with PEL one with RR2, and one with ASBRL

C.

PE2 has a total of two BGP sessions established: one with RR2 and one with ASBR2.

D.

PE1 has a total of two BGP sessions established: one with RR1 and one with PE2.

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Question # 19

Click the exhibit.

4A0-C02 question answer

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.

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Question # 20

What is the minimum number of Route Distinguishers required to implement an overlapping VPRN involving 5 different customers?

A.

1

B.

3

C.

5

D.

7

E.

10

Full Access
Question # 21

Which command may be used on an Alcatel-Lucent 7750 SR to verify the number of VRF routes allowed, based on the maximum routes value configured in the service instance?

A.

Show service id base

B.

Show router bgp routes

C.

Show service id maximum-routes

D.

Show router status

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Question # 22

Click the exhibit.

4A0-C02 question answer

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.

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Question # 23

Click the exhibit.

4A0-C02 question answer

The AS-override method is used to prevent BGP loops in the blue customer VPRN. Which statement about the configuration is TRUE?

A.

the configuration is complete and correct.

B.

'as-override' should be configured under the BGP context.

C.

'as-override' should be configured under the group context.

D.

'as-override' should not be part of this configuration.

Full Access
Question # 24

In the output from an Alcatel-Lucent 7750 SR shown below, what does the highlighted text represent?

4A0-C02 question answer

A.

The LDP identifier

B.

The Service identifier

C.

The Route Target

D.

The Route Distinguisher

E.

The tunnel label

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Question # 25

Which protocol is used to exchange customer VPRN routes between PE devices?

A.

OSPF

B.

ISIS

C.

MP-BGP

D.

BGP

E.

Targeted LDP

Full Access
Question # 26

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

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Question # 27

Which of the following about the maximum number of routes that can be accepted in a VRF for a VPRN service on the Alcatel-Lucent 7750 SR is FALSE?

A.

The Alcatel-Lucent 7750 SR allows the setting of the maximum number of routes that can be accepted in a VRF for a VPRN service.

B.

The "maximum-routes" command is used to specify the maximum number of remote routes that can be held within a VRF for a VPRN service.

C.

When the "maximum-routes" command is used with the "log-only" parameter, new routes are still learned.

D.

Once the "threshold" value is reached, no new routes are added to the VRF.

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Question # 28

Click the exhibit.

4A0-C02 question answer

Internet access using route leaking between the VRF and the global routing table is configured in the network. Which of the following is the correct output of route 192.168.50.1 in the global routing table of PE3?

A.

A

B.

B

C.

C

D.

D

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Question # 29

A CE hub and spoke VPRN has two spoke sites; which of the following would be the best option to implement this topology at the hub site PE?

A.

One VPRN, one route distinguisher, and two route targets

B.

Two VPRNs, one route distinguisher, and three route targets

C.

Two VPRNs, two route distinguishers, and three route targets

D.

One VPRN, two route distinguishers, and three route targets

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Question # 30

Click the exhibit.

4A0-C02 question answer

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"

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Question # 31

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.

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Question # 32

Which of the following about the Route Target is TRUE?

A.

The Route Target is added to an IPv4 route to create the VPN-IPv4 route.

B.

The Route Target is an extended community string that identifies VPN membership.

C.

A route can have only one Route Target.

D.

The Route Target is a 64-bit value added to customer prefixes to make them unique.

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Question # 33

Click the exhibit button below.

4A0-C02 question answer

At router PE1, customer packets are arriving tagged with a dotlp value of 6 and marked with a DSCP value of EF.

Based on the configuration shown below for a VPLS service, what will be the DSCP and EXP marking for the packet egressing the network port on this PE router? (Choose two)

A.

The DSCP value will be set to af21.

B.

The DSCP value will be set to af23.

C.

The DSCP value will remain as ef.

D.

The EXP value, in the MPLS headers, will be set to 4.

E.

The EXP value, in the MPLS headers, will be set to 3.

Full Access
Question # 34

Which of the following are examples of metrics for QoS?

A.

Signal degradation, attenuation, line loss

B.

Latency, FIFO, WRED

C.

Delay, jitter, packet loss

D.

SNR, queue depth, latency

E.

Attenuation, dispersion, latency

Full Access
Question # 35

In a BGP VPLS, which of the following BGP attributes is used to carry the L2 MTU?

A.

The NRLI

B.

The AFI

C.

The SAFI

D.

The extended community

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Question # 36

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.

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Question # 37

An Alcatel-Lucent 7750 SR has the BGP configuration shown below. Assuming the router has established BGP sessions to routers R1 and R2, which of the following is TRUE?

4A0-C02 question answer

A.

Both neighbors R1and R2 should be part of AS 65540.

B.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65540.

C.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65560.

D.

Both neighbors R1and R2 should be part of AS 65560.

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Question # 38

Click the exhibit.

4A0-C02 question answer

Assume all router-IDs are properly configured, and IPv6 link-local addresses are used to establish all eBGP sessions. Given the following iBGP configuration on router A, what is the Next Hop for prefix 2001:DB8:A:401::1/128 on router B?

4A0-C02 question answer

A.

The IPv6 link-local address of the router D interface towards router A.

B.

The IPv6 link-local address of the router A interface towards router D.

C.

The IPv6 global address of router A.

D.

The IPv6 global address of router D.

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Question # 39

Which of the following is uniquely identified by the VPLS-ID in an LDP VPLS using Auto-Discovery^*

A.

VPLS switch identifier.

B.

VPLS service identifier.

C.

VPLS router identifier to all PEs.

D.

A locally unique VPLS service identifier.

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Question # 40

How many queues are available for use on service egress within a VPLS service?

A.

1 multipoint and 8 unicast.

B.

8 queues, regardless of traffic type.

C.

8 unicast and 24 multipoint.

D.

8 unicast and 8 multipoint.

E.

16 queues, distributed as desired.

Full Access
Question # 41

In a VPRN the PE device is configured to run which of the following protocols? (Choose three.)

A.

MP-BGP for exchanging customer routes with other PEs

B.

A routing protocol for exchanging customer routes with the CE

C.

MPLS for exchanging labels with other provider core devices

D.

MPLS for exchanging labels with the CE devices

E.

Targeted LDP for exchanging VPRN labels with other PE devices

F.

A label signaling protocol for defining transport tunnels between PE and CE devices

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Question # 42

Based on the VPRN BGP decision process, which of the following routes is selected first?

A.

The route with the shortest AS path.

B.

The route with the lowest route or tunnel table cost to the NEXT_HOP.

C.

The route with the highest local preference.

D.

The route with the lowest originator ID or BGP identifier.

Full Access
Question # 43

On the Alcatel-Lucent 7750 SR, what is the maximum number of queues that a single SAP-ingress policy can support in a VPLS?

A.

16

B.

8

C.

32

D.

48

E.

56

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Question # 44

Click the exhibit button below. The service provider has both a VLL (epipe) service and a VPLS, as shown in the diagram below.

4A0-C02 question answer

At router PE B, traffic arriving from both services will have the same network-queue policy applied.

A.

TRUE

B.

FALSE

Full Access
Question # 45

Which of the following statements best describes the output from an Alcatel-Lucent 7750 SR shown below?

A.

The BGP session from PE to P is not operational

B.

The BGP session between PEs is operational

C.

The BGP session between PE and CE is not operational

D.

The BGP session from PE to CE is operational

E.

The BGP session between PEs is not operational

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Question # 46

Which of the following BEST describes a SAP when regarding QoS?

A.

A point in the network where EXP bits can be mapped to one of eight predefined FCs, each one with its own queue.

B.

A logical point in a service tunnel where all of customer traffic is aggregated.

C.

A point at which the initial classification of customer traffic occurs.

D.

A point in the network where QoS parameters are discarded in favor of lower-level hardware queuing functions, such as LLI (Link Layer Interleave).

E.

A point in the network where traffic flows from multiple different services are queued together, based on forwarding class.

Full Access
Question # 47

With hierarchical scheduling, up to ___________ tiers are supported on the Alcatel-Lucent 7750 SR.

A.

8

B.

3

C.

4

D.

5

E.

6

Full Access
Question # 48

What is the SA in the Ethernet frame used for by a layer 2 switch?

A.

MAC learning

B.

SA filtering

C.

Routing table population

D.

Frame forwarding

Full Access
Question # 49

Which of the following statements about Spanning Tree Protocol is true?

A.

The switch with the lowest priority becomes the root.

B.

The switch with the highest priority becomes the root.

C.

The switch with the lowest MAC address always becomes the root.

D.

The switch with the highest MAC address always becomes the root.

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Question # 50

Click on the exhibit below.

4A0-C02 question answer

Study the network diagram. Which of the following configurations is correct for user VPLS 100 on PE4?

4A0-C02 question answer

A.

Option A

B.

Option B

C.

Option B

D.

Option C

E.

Option E

Full Access
Question # 51

Click on the exhibit below.

4A0-C02 question answer

Given the following output what is the most likely reason the SDP binding is operationally down? (Choose 2)

A.

The sdp id is different on the far-end.

B.

LDP is disabled on the far-end.

C.

The vc-id is different on the far-end.

D.

The mesh-sdp is missing on the far-end.

E.

The mesh-sdp is administratively shutdown on PEL

F.

There is an MTU mismatch.

Full Access
Question # 52

Which of the following SAP encapsulations supports only one service on a port?

A.

Dot1Q

B.

Null

C.

Q-in-Q

D.

Ipcp

E.

BCP

Full Access
Question # 53

In Active/Standby pseudowires a failed pseudowire has recovered. Under what circumstances will the active pseudowire revert to the previously failed link?

A.

It will always revert to the previously failed link.

B.

It will never revert to the previously failed link.

C.

It will revert if the precedence of the previously failed link is set to 0 or "primary".

D.

It will revert if the precedence of the previously failed link is lower than the currently active link

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Question # 54

The service-mtu of a VPLS using MPLS encapsulation is set to 9100. What is the minimum MTU value that can be set for the network port if fast re-route facility mode is used on the SDP LSP?

A.

9100

B.

9104

C.

9108

D.

9122

E.

9126

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Question # 55

An l-VPLS is configured with a service id of 511. What will the value of the l-SID be assuming a default configuration?

A.

The 1-SID must be explicitly configured.

B.

The 1-SID only supports a range from 1 to 255.

C.

The 1-SID will default to 511 .the value of the service-id.

D.

Thel"SIDwilldefaultto131582, the value of the service-id + 131071.

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Question # 56

Which of the following must be true in order to add a port to a LAG? (Choose 2)

A.

ports must be on the same MDA

B.

ports must have the same speed and duplex settings

C.

auto negotiation must be on

D.

auto negotiation must be off or limited

E.

port must be in access mode only

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Question # 57

Which OAM tool can be used to dynamically learn the MAC address of a CE device connected to a SAP within a VPLS service?

A.

oam mac-populate

B.

oam mac-ping

C.

oam mac-trace

D.

oam svc-ping

E.

oam cpe-ping

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Question # 58

Which of the following is a true statement?

A.

In a dynamic environment where MAC addresses are changing rapidly, the lower the age-time, the larger the fdb-table-size should be.

B.

In a dynamic environment where MAC addresses are changing rapidly, the higher the age-time, the larger the fdb-table-size should be.

C.

In a dynamic environment where MAC addresses are changing rapidly, the higher the age-time, the smaller the fdb-table-size should be.

D.

There is no relationship between the age-time and the fdb-table-size.

Full Access
Question # 59

How can one ensure that a specific switch will be select as root in an STP network?

A.

Set the bridge priority to 131071.

B.

Set the bridge priority to 0.

C.

Set the bridge priority to 32768.

D.

Leave the bridge priority as the default.

Full Access
Question # 60

You are providing a customer two VPLS services in two different Metro networks. VPLS 500 has been configured in Metro 1 and VPLS 900 has been configured in Metro 2. The customer has requested that they have connectivity between the Metro Networks with their existing VPLS services. Which configuration on the PE routers linking the metro networks will allow for VPLS 500 and VPLS 900 to act as a single VPLS service? Assume default values for all VPLS parameters and SDP 999 exists between the metro networks.

4A0-C02 question answer

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Question # 61

Click on the exhibit below.

4A0-C02 question answer

The following IP filter has been configured and applied to a SAP in a non-VPLS service. Which of the following statements is true?

A.

An error will be generated and the configuration will not be allowed.

B.

The filter entry will be ignored and traffic matching the criteria will be forwarded

C.

All traffic matching entry 20 will be dropped.

D.

Traffic matching entry 20 will be forwarded to sdp 100:1.

Full Access
Question # 62

In RSTP, which state do all ports initialize in?

A.

Designated

B.

Discarding

C.

Listening

D.

Root

E.

Forwarding

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Question # 63

Click on the exhibit below.

4A0-C02 question answer

CE-A sends frames with 2 tags. If the SAP on PE-A is "sap 1/1/1:1 .*" and the SAP on PE-B is "sap 1/1/1:100.200" how many tags will there be on the frame when it egresses from the SAP on PE-B?

A.

0

B.

1

C.

2

D.

3

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Question # 64

If the max remote-age timer of a B-VPLS is reached, what happens to the remotely learned MAC addresses in the l-VPLS service?

A.

There is no effect. The MAC addresses for the l-VPLS age out independently of the aging of B-VPLS addresses.

B.

The MAC addresses for the l-VPLS will age out immediately following the remote-age out of the backbone-macs of the B-VPLS.

C.

By default, the remote-age timer of the B-VPLS is configured to 0 and addresses do not age out. The l-VPLS uses its own timer.

D.

The same timer is used for B-VPLS and l-VPLS addresses on the node.

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Question # 65

Click the exhibit.

4A0-C02 question answer

Routers C and E are route reflectors. When the update for prefix 192.168.2.0/24 is received at router F, what will be the Originator_ID attribute?

A.

The router ID of router A.

B.

The router ID of router B.

C.

The router ID of router C.

D.

It will not be set.

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Question # 66

Click on the exhibit.

4A0-C02 question answer

AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. Which routers must be configured with the "configure router bgp igp-shortcuts rsvp-te" command?

A.

Routers R6, R1, R4 and R5.

B.

Routers R1and R4.

C.

Routers R1, R2, R3 and R4.

D.

Routers R2 and R3.

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Question # 67

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?

A.

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

B.

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

C.

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

D.

All routes will appear in the RIB-In.

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Question # 68

Click the exhibit.

4A0-C02 question answer

Assuming router A is configured with "next-hop-self", what does the BGP update for prefix 192.168.0.1/27 contain when it arrives at router B?

A.

AS Path of 65200 65100, Next Hop of router A.

B.

AS Path of 65200 65100, Next Hop of router E.

C.

AS Path of 65100, Next Hop of router A.

D.

AS Path of 65100, Next Hop of router E.

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Question # 69

What is the purpose of configuring a triggered-policy on an Alcatel-Lucent 7750 SR?

A.

Policy changes are delayed until the peer router with the affected routes reboots.

B.

Policy changes are delayed until route updates for affected BGP routes are received from peers.

C.

Policy changes are delayed until BGP sessions are cleared or BGP is reset.

D.

Policy changes are delayed until the router reboots.

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Question # 70

The user of an Alcatel-Lucent 7750 SR wants to see the effect of changing an import policy immediately. What is the best command to force re-evaluation of the import policy with minimal impact?

A.

Configure router bgp shutdown

B.

Clear router bgp neighbor soft

C.

Clear router bgp neighbor soft-inbound

D.

Clear router bgp protocol

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Question # 71

Click the exhibit.

4A0-C02 question answer

Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of 200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?

A.

On router R5 only.

B.

On either router R1or R2.

C.

On both routers R1and R2.

D.

On all routers R1, R2 and R5.

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Question # 72

Click the exhibit.

4A0-C02 question answer

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes" on router R5?

4A0-C02 question answer

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Question # 73

Which of the following AS Paths will match the regular expression "65100."?

A.

"65100"

B.

"65100 65200''

C.

"65200 65100"

D.

"65100 65250 65200"

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Question # 74

Which of the following organizations would an ISP based in Europe approach for an IP prefix assignment?

A.

ARIN

B.

ICANN

C.

RIPE NCC

D.

LACNIC

E.

APNIC

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Question # 75

Which of the following statements regarding route reflectors is TRUE?

A.

Route reflectors propagate BGP learned routes to their clients.

B.

Route reflectors require "n" iBGP sessions, where "n" is the number of BGP routers in the AS.

C.

Route reflectors disable iBGP split horizon for all iBGP peers in the AS.

D.

Route reflectors do not work in conjunction with confederations.

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Question # 76

A confederated AS is comprised of three members. One member is comprised of 4 routers, while the other two members are comprised of 3 routers each. Assuming member ASs are fully meshed and use full mesh iBGP, what is the required number of BGP sessions within the confederation?

A.

12

B.

13

C.

14

D.

15

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Question # 77

A router in AS 65100 receives two BGP routes. The first route is for 138.1.1.0/24 with an AS Path of 65200 65300, Local Preference of 100, MED of 100, and router ID 10.10.10.10. The second route is for 138.1.0.0/16 with an AS Path of 65500 65300, Local Preference of 150, MED of 100, and router ID 10.1.1.1. Assuming all other attributes are equal, which route would be used to forward an IP packet with destination IP address 138.1.1.1?

A.

The first BGP route.

B.

The second BGP route.

C.

Both routes are used.

D.

It is impossible to determine without the value of the origin code for both routes.

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Question # 78

Which of the following is considered a best practice for BGP address planning?

A.

Advertising external networks into IGP.

B.

Using system addresses for setting up iBGP sessions.

C.

Exporting the networks associated with the external links of eBGP peers into BGP.

D.

Optimizing BGP route table by exporting IGP routes into BGP.

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Question # 79

Which of the following regarding the withdrawal of routes from one BGP speaker to another is

TRUE?

A.

An update message is used. Only a single prefix can be withdrawn at a time.

B.

An update message is used. Multiple prefixes can be withdrawn at a time.

C.

A withdraw message is used. Only a single prefix can be withdrawn at a time.

D.

A withdraw message is used. Multiple prefixes can be withdrawn at a time.

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Question # 80

Click the exhibit.

4A0-C02 question answer

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes on router R1?

4A0-C02 question answer

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Question # 81

What class of attribute is Originator_ID?

A.

Well-known mandatory.

B.

Well-known discretionary.

C.

Optional transitive.

D.

Optional non-transitive.

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Question # 82

Click the exhibit.

4A0-C02 question answer

If router A originates an update for prefix 192.168.0.1/27, what will the update contain when it reaches router B?

A.

AS Path of 65200, local-preference of 100.

B.

AS Path of 65200, local-preference of None.

C.

Null AS Path, local-preference of 100.

D.

Null AS Path, local-preference of None.

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Question # 83

The following policies are configured and exported using "export "Policy-1" "Policy-2"". Assuming both "Client-1" and "Client-2" are properly defined on the router, which routes are advertised?

4A0-C02 question answer

A.

Client-1 routes only.

B.

Client-2 routes only.

C.

Client-1 and Client-2 routes.

D.

Neither Client-1 nor Client-2 routes.

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Question # 84

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?

A.

Only the BGP route is in the route table.

B.

Both routes are in the route table.

C.

None of the routes is in the route table.

D.

Only the OSPF route is in the route table.

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Question # 85

Which of the following parameters does NOT have to match for an iBGP session to be successfully established?

A.

BGP version number.

B.

The local AS number.

C.

The Hold Time.

D.

Authentication.

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Question # 86

Which of the following are characteristics of 802.1p? (Choose two)

A.

802.1p adds 16 bits to the Layer 2 header,

B.

802.1p adds 16 bits to the Layer 3 header.

C.

802.1p specifies 64 different priority levels.

D.

802.1p uses a field in the 802.1Q header.

E.

802.1p uses a field in the Layer 3 IP header

F.

802.1p defines a 3-bit Class of Service field.

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Question # 87

Which of the following is a feature of LDP VPLS?

A.

Service labels are assigned based used on label blocks.

B.

BGP-AD, RADIUS and Management are used for auto-discovery.

C.

Service labels are signaled using MP-BGP.

D.

Hierarchical VPLS is loosely defined in the standards.

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Question # 88

Click the exhibit button below. A service provider has applied the SAP-ingress policy configuration below on his customer's SAP. The service provider notices that all of the customer's traffic is being dropped at the SAP-ingress. Which of the following actions can resolve the problem, if applied on its own? (Choose three)

4A0-C02 question answer

A.

Set the CIR of queue 3 to a non-zero value corresponding to the customer's expected bandwidth requirements.

B.

Set queue 3 to use priority mode.

C.

Set the traffic classification of packets to in-profile.

D.

Set the high-priority-only value to 0.

E.

Map AF traffic to queue 1

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Question # 89

The port groups have been configured consistently on the PE routers, as highlighted in the exhibit. Which SDP connection will be blocked first when the re-learn rate is exceeded?

4A0-C02 question answer

A.

The connection between PE-A and PE-C

B.

The connection between PE-A and PE-B

C.

The connection between PE-D and PE-C

D.

The connection between PE*D and PE-B

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Question # 90

Which of the following statements are TRUE regarding the PE device in a QoS enabled network? (Choose two)

A.

A device that provides no differentiation between customer traffic flows.

B.

A device that classifies and marks customer traffic.

C.

A device that uses MPLS EXP bits to differentiate between traffic flows.

D.

A device that creates macroflows towards the core from multiple customer sites.

E.

A device that passes macroflows while optionally changing QoS markings.

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Question # 91

Click the exhibit button below. Given the slope-policy (below), which of the following statements are TRUE? (Choose two)

4A0-C02 question answer

A.

All out-of-profile traffic will be dropped before that of any in-profile traffic.

B.

The discard probability slope of an in-profile traffic is steeper than that of an out-of-profile traffic.

C.

When the shared buffer utilization reaches 55%, both in-profile and out-of-profile packets may be dropped.

D.

The maximum probability with which an out-of-profile packet can be dropped is higher than that of an in-profile packet.

E.

When the shared buffer utilization is at 61%, only in-profile packets are currently in the shared buffer pool.

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Question # 92

Which of the following statements describe the primary objectives of the policing of traffic flows on the Alcatel-Lucent 7750 SR? (Choose two)

A.

Ensure that traffic flows conform to their traffic profile.

B.

Log violations of metered traffic flows exceeding the CIR value set on the entity across which the traffic is moving.

C.

Provide fairness between traffic flows, so that conforming (in-profile) traffic flows are not starved of bandwidth and/or buffer space by non-conforming (out-of-profile) flows.

D.

Minimize packet loss and reduce end to end latency.

E.

Ensure that variable latencies do not cluster short bursts of originally conforming packets and render them nonconforming.

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Question # 93

What is the purpose of the Nokia SR design that includes, for every ingress unicast queue, one hardware queue per destination forwarding complex (FFPC)?

A.

To utilize memory resources efficiently

B.

To avoid Head of Line blocking

C.

To achieve more granularity of QoS control

D.

To make hierarchical scheduling/policing possible

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Question # 94

Click the exhibit button below. Each router is interconnected by a single GigE link, as shown in the diagram below.

4A0-C02 question answer

Note: The arrows show the direction of traffic flow.

Traffic from Customer A and Customer B that is classified to the same forwarding class is queued together at the ingress of Router B.

A.

True

B.

False

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Question # 95

Which of the following statements BEST describes an MBS parameter?

A.

It specifies the maximum rate at which a queue can be serviced.

B.

It specifies the maximum depth of a queue beyond which packets will be dropped.

C.

It specifies the portion of a queue that is taken from the reserved buffer pool.

D.

It specifies the threshold beyond which only in-profile packets will be queued.

E.

It specifies the peak bandwidth that can be attained by the incoming traffic.

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