Black Friday Special Limited Time 70% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: 70percent

Certensure Logo
  1. Home
  2. Nokia
  3. SRC Certification
  4. 4A0-104 - Nokia Services Architecture

Nokia 4A0-104 Nokia Services Architecture Exam Practice Test

Demo: 43 questions
Total 288 questions
Get 4A0-104 Full Access Download 4A0-104 PDF

Nokia Services Architecture Questions and Answers

Question 1

Click the exhibit.

The output is from PE router R4 about VPRN service 100. How many prefixes have been learned from the MP-BGP protocol?

Options:

A.

0

B.

2

C.

3

D.

6

Question 2

A VPLS has a service MTU of 1600. To create an IES spoke termination to the VPLS, what ip-mtu value must be used for the IES?

Options:

A.

1586

B.

1596

C.

1600

D.

1614

Question 3

If the Alcatel-Lucent 7750 SR is rebooted after an "admin save'' has been performed, which of the following about mirror services is TRUE?

Options:

A.

Only the mirror source must be re-configured.

B.

Only the mirror destination must be re-configured.

C.

Both the mirror destination and mirror source must be re-configured.

D.

Neither the mirror destination nor the mirror source must be re-configured.

Question 4

Which of the following comparisons between E-pipes and VPLSes is FALSE?

Options:

A.

They both function as a Layer 2 switch from the service provider's perspective.

B.

They both support SAP encapsulations of null, dot1Q and Q-in-Q.

C.

They both use SAPs as the demarcation point between the customer and the provider.

D.

MAC addresses are learned by VPLSes, but not by E-pipes.

Question 5

Which of the following about transport and service tunnels is FALSE?

Options:

A.

Service tunnels are unidirectional.

B.

Transport tunnels are unidirectional.

C.

A service will use the same service label for every hop.

D.

A local service requires a transport tunnel.

Question 6

Which utility on the Alcatel-Lucent 7750SR can be used to investigate an MPLS path?

Options:

A.

Isp-trace

B.

Idp-trace

C.

Sdp-ping

D.

Svc-ping

E.

Ping

Question 7

An E-pipe is configured with a service MTU of 5000.What is the minimum MTU value that should beset on an access port for a dot1q encapsulated SAP on this service?

Options:

A.

5000

B.

5004

C.

5008

D.

5014

Question 8

Which of the following about the Alcatel-Lucent 7750 SR sdp-ping is TRUE?

Options:

A.

It tests the IGP reachability of the far-end IP address of an SDP.

B.

It tests that the MTU settings of a service are correct.

C.

It tests in-band, uni-directional or round-trip connectivity of SDPs.

D.

It tests the reachability of hosts connected to an SDP.

Question 9

Which of the following about the components of a distributed service on the Alcatel-Lucent 7750 SR is TRUE?

Options:

A.

A SAP can only be used by one service on a router.

B.

A dedicated SDP needs to be created for each service.

C.

A service is created on each site before the customer is created.

D.

SAPs must be created before a service is created.

Question 10

Which of the following about VPRN route targets is FALSE?

Options:

A.

Route targets are carried in MP-BGP updates.

B.

Route targets identify the VRF that a VPN-IFV4 prefix is associated with.

C.

Route targets are communicated between PEs that are part of a specific VPRN.

D.

Route targets identify the egress SAP of a service towards a CE.

Question 11

Which protocol can be used to signal the outer label for a VPN service?

Options:

A.

IPCP

B.

LDP

C.

PPP

D.

TLDP

Question 12

Which of the following about VPRN route targets is FALSE?

Options:

A.

They are used to identify the VRF table for a prefix at the receiving PE.

B.

They are used by VPRNs to control the distribution of VPN routing information.

C.

They are distributed to all PEs and CEs that are part of the VPRN.

D.

They are distributed to PEs to identify the VRF table that a VPN-IPv4 prefix is associated with.

Question 13

By default, what does the Alcatel-Lucent 7750 SR do when a frame with an unknown destination address is received in a VPLS?

Options:

A.

It drops the frame.

B.

It floods the frame to all PEs participating in the service.

C.

It sends a destination unreachable message back to the originating host.

D.

It sends the frame to the closest neighbor.

Question 14

Which of the following is TRUE when a service uses a GRE transport tunnel?

Options:

A.

The service takes a route determined by the IGP.

B.

The tunnel does not use a service label.

C.

The service label is swapped at each hop in the transport network.

D.

The tunnel is bidirectional and only requires configuration at one end of the service.

Question 15

On the Alcatel-Lucent 7750 SR, which one of the following steps is NOT required when enabling an MP-BGP session between PE routers in a VPRN?

Options:

A.

Configuring an autonomous system number in the global context.

B.

Configuring a BGP group and peer parameters.

C.

Configuring a VPN-IPv4 address family.

D.

Configuring an export policy to advertise routes between PEs.

Question 16

Which one of the following commands on an Alcatel-Lucent 7750 SR can take a FEC as a parameter to verify if a packet for that FEC reaches the appropriate LER?

Options:

A.

ping

B.

sdp-ping

C.

svc-ping

D.

Isp-ping

Question 17

Click the exhibit.

E-pipe 100 is using an SDP (4) with an LSP that uses the path shown (PE1-PE2-PE3-PE4). Which of the following is the expected output from the OAM command?

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question 18

Click the exhibit.

This output is from a router that is part of a 6VPE deployment using a VPRN. Which type of router would this configuration be found on?

Options:

A.

A CE router.

B.

A P router.

C.

A PE router.

D.

Both P and PE routers.

Question 19

Which service type would be used to provide a bi-directional Layer 2 connection of TDM circuits over an IP/MPLS network?

Options:

A.

A-pipe

B.

E-pipe

C.

I-pipe

D.

F-pipe

E.

C-pipe

Question 20

What needs to be configured before a SAP appears? (Choose 2)

Options:

A.

Configuring the physical port in access mode.

B.

Configuring the physical port in network mode.

C.

Enabling the port using the no shutdown command.

D.

Ports are enabled by default, thus no need to use the no shutdown command.

Question 21

A transport tunnel can either use an MPLS or GRE encapsulation.

Options:

A.

TRUE

B.

FALSE

Question 22

Click on the exhibit button below.

Assuming the customer only needs to monitor traffic from PE3 to the customer site, what two items are missing in the configuration of PE5, the Alcatel-Lucent 7750 Service Router in the Head Office? (Assume that the IP/MPLS network structure between the local and remote PEs is in place.)

Options:

A.

The mirror destination configuration on PE5 is missing the "remote-source" command.

B.

There needs to be a mirror source configuration on PE5 with the "remote-source" command.

C.

This is not possible since the protocol analyzer is located at the Central Office. It needs to be at the customer site.

D.

There needs to be a configuration command to put sap 1/1/3 on the mirror destination of PE5.

E.

There needs to be a configuration command to put sap 1/1/3 on the mirror source of PE5

Question 23

Which of the following best describes a VPWS?

Options:

A.

Layer 3 direct Internet access service.

B.

Layer 2 point-to-point service.

C.

Layer 2 multipoint-to-multipoint service.

D.

Layer 3 IP multipoint-to-multipoint VPN service.

Question 24

Which of the following is NOT a service offered on the Alcatel-Lucent 7750 SR?

Options:

A.

IES

B.

VPWS

C.

VPLS

D.

VPRN

E.

L2TP

Question 25

A network consists of 4 PE routers. A customer requires a VPLS service and has sites connected to each PE. Each site must have direct connectivity with all other sites. How many SDPs must be configured on each PE?

Options:

A.

0

B.

2

C.

3

D.

4

Question 26

Epipe services do no consume any MAC resources because MAC learning is disabled.

Options:

A.

TRUE

B.

FALSE

Question 27

Which of the following SAP encapsulations support multiple services on a port? (Choose 3)

Options:

A.

dot1q

B.

null

C.

qinq

D.

atm

E.

ipcp

F.

bcp-null

Question 28

Click on the exhibit button below.

Assuming the customer only needs to monitor traffic from PE3 to the customer site, what three items are missing from PE3's configuration? (Assume that the IP/MPLS network structure between the local and remote PEsis in place.)

Options:

A.

The mirror destination configuration on PE5 is missing the "remote-source" command,

B.

The mirror destination on PE3 needs a "remote-source" command.

C.

The mirror service IDs on the local and remote destinations must match.

D.

The mirror source on PE3 needs a "remote-source" command.

E.

The mirror source command on the remote PE3 needs a command that tells it to monitor port 1/1/2.

Question 29

How many SAPs can be configured on a port configured with NULL encapsulation?

Options:

A.

1

B.

4096

C.

None. This encapsulation is not supported.

D.

The number is limited only by the capacity of the router

Question 30

Which of the following represents a SAP on a physical port configured with Q-in-Q encapsulation?

Options:

A.

sap 1/1/1

B.

sap 1/1/1:5

C.

sap 1/1/1:5:5

D.

sap 1/1/1:10.100

Question 31

What can the sdp-ping command be used for? (Choose 2)

Options:

A.

To test the ability of reaching the far-end IP address of an SDP within the SDP encapsulation

B.

To determine the path MTU to the far-end IP address over an SDP.

C.

To determine the service MTU of the service using an SDP.

D.

To determine the presence of hosts using the service

Question 32

Which of the following statements best describes the purpose of an MP-BGP in a VPRN?

Options:

A.

Routes from different customers with the same IPv4 address prefix are treated as equivalents by MP-BGP.

B.

Alcatel-Lucent 7750 SR routers support MP-BGP for VPN label signaling in a VPRN service only if LDP is used for LSP signaling.

C.

The multi-protocol nature of MP-BGP allows VPRN routes to be distributed within the provider core network as IPv4 routes.

D.

MP-BGP is an enhanced version of BGP that can carry a service label, a tranpot label, and customer route prefixes.

E.

None of the above statements describe the use of an MP-BGP in a VPRN.

F.

All of the above statements describe the use of an MP-BGP in a VPRN.

Question 33

SAPs in an Epipe service can only be configured on Ethernet ports

Options:

A.

TRUE

B.

FALSE

Question 34

A customer requests that their Layer 2 Ethernet service be configured to forward frames up to 9000 bytes. The service provider is using MPLS encapsulation. What is the minimum MTU setting for the network ports?

Options:

A.

9000

B.

9004

C.

9008

D.

9022

E.

9036

Question 35

Which VPWS service would be used to create a point-to-point Frame Relay service?

Options:

A.

Epipe

B.

Apipe

C.

Fpipe

D.

Ipipe

E.

Cpipe

Question 36

Which of the following SAPs will forward all tagged and untagged frames on the port? (Choose 2)

Options:

A.

sap 1/1/1

B.

sap 1/1/1:*

C.

sap 1/1/1:*.0

D.

sap 1/1/1:0*

E.

sap 1/1/1:0

Question 37

Why must the MTU be changed when configuring an IES spoke termination to a VPLS?

Options:

A.

The default service MTU on a VPLS service is 1514 bytes.

B.

The default IP MTU of an IES is set based on the network port MTU.

C.

During VC label signaling, the VC MTU is verified and must match.

D.

All of the above.

Question 38

By default, what happens when a packet with a VLAN tag is received on a SAP provisioned with null encapsulation?

Options:

A.

The original VLAN tag is removed.

B.

The original VLAN tag is kept.

C.

The VLAN tag is replaced by a provider tag.

D.

The VLAN tag is kept and a provider tag is added.

Question 39

Click the exhibit.

Which tool produced this output?

Options:

A.

ping

B.

Isp-ping

C.

traceroute

D.

Isp-trace

Question 40

Which of the following SAPs will toward tagged frames but NOT untagged frames?

Options:

A.

sap 1/1/1

B.

sap 1/1/1:*

C.

sap 1/1/1:*.0

D.

sap 1/1/1:0

E.

None of the above.

Question 41

Which one of the following items CANNOT be used as a mirror source on an Alcatel-Lucent 7750 SR?

Options:

A.

IP filter

B.

MAC filter

C.

Egress label

D.

Ingress label

Question 42

Which of the following about the VPRN data plane is TRUE?

Options:

A.

A packet receives a service label and a transport label at the ingress PE.

B.

A packet has its servicelabel swapped at each P router.

C.

The egress PE pops the service label, and the transport label is forwarded.

D.

The service label is popped by the remote CE.

Question 43

Which of the following can be used to detect the smallest path MTU in an RSVP signaled MPLS tunnel?

Options:

A.

ADSPEC

B.

CSPF

C.

Service ping

D.

LSP trace

Load More 4A0-104 Questions
Demo: 43 questions
Total 288 questions
Get 4A0-104 Full Access Download 4A0-104 PDF