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Nokia 4A0-C01 Exam Made Easy: Step-by-Step Preparation Guide

Questions 41

What is the minimum Ethernet physical network MTU required for a Layer 2 service on an MPLS encapsulated SDP with a service MTU of 1500?

Options:

A.

1500

B.

1508

C.

1514

D.

1522

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Questions 42

Click the exhibit.

4A0-C01 Question 42

This output is from PE router R1. Based on the output about VPRN 100, how many prefixes has router R1 learned from CE router R5?

Options:

A.

0

B.

2

C.

3

D.

6

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Questions 43

What happens by default on an Alcatel-Lucent 7750 SR when a VPLS accepts a tagged frame at the ingress SAP 1/1/1:100?

Options:

A.

The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.

B.

The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.

C.

The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.

D.

The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.

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Questions 44

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.

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Questions 45

Consider an E-pipe service configured with SAP 1/1/1:5 and SAP 1/1/1:6. If the SAP 1/1/1:5 accepts an ingress frame, which of the following is TRUE?

Options:

A.

The frame egresses from 1/1/1:6 with no VLAN tag.

B.

The frame egresses from 1/1/1:6 with VLAN tag 5.

C.

The frame egresses from 1/1/1:6 with VLAN tag 6.

D.

The frame egresses from 1/1/1:6 with an inner VLAN tag of 5 and an outer VLAN tag of 6.

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Questions 46

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

Options:

A.

TRUE

B.

FALSE

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Questions 47

What is the best approach of making MTUs match between a VPLS and a spoke IES in order to bring up the service?

Options:

A.

Change the service MTU of the VPLS to match the IES.

B.

Set the ip-mtu of the IES service to match the service MTU of the VPLS service.

C.

Change the MTU of the SDP attached to the VPLS to match the service MTU of the VPLS.

D.

Set the DNF flag on the IES service.

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Questions 48

Click the exhibit.

4A0-C01 Question 48

Based on this output from PE router R1, how many other PEs are participating in the VPRN?

Options:

A.

0

B.

1

C.

2

D.

3

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Questions 49

Click the exhibit.

4A0-C01 Question 49

Which OAM tool produced this output?

Options:

A.

vprn-ping

B.

sdp-ping

C.

traceroute

D.

Isp-trace

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Questions 50

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.

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Questions 51

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.

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Questions 52

Which command provides a summary status of the VPLS service 100?

Options:

A.

show service id 100 base

B.

show service vpls 100

C.

show service vpls 100 summary

D.

show service vpls 100 all

E.

None of the above.

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Questions 53

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

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Questions 54

Which of the following about dot1Q SAPs is FALSE?

Options:

A.

The dot1Q default SAP (port: *) can be used to pass VLAN tags transparently through a network.

B.

The dot1Q null SAP (port: 0) accepts all tagged frames and untagged frames.

C.

The dot1Q default SAP (port: *) accepts all untagged frames and any frames with tag values that are not used as a service-delimiting value on another SAP.

D.

A dot1q null SAP (port: 0) and a dot1q default SAP (port: *) cannot both be defined on the same port.

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Questions 55

Which of the following about VPRNs is TRUE?

Options:

A.

Customers must use the same routing protocol as the service provider.

B.

Customers belonging to the same VPRN service must use the same subnet.

C.

Service providers only need to perform configurations on the PEs to add additional VPRNs.

D.

For each VPRN, only one customer can be connected at each PE.

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Questions 56

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

Options:

A.

An SDP can be used by more than one service and customer.

B.

A SAP can only be created on an access port.

C.

A customer can have multiple services associated to it.

D.

A customer is only created on one site of a distributed service.

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Questions 57

Which of the following about transport tunnels used by services is FALSE?

Options:

A.

A transport tunnel can carry many service tunnels.

B.

The transport label is unchanged throughout the transport network.

C.

A single network port can carry more than one transport tunnel.

D.

Both MPLS and GRE transport tunnels use a service label.

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Questions 58

Which of the following about VPRN route targets is FALSE?

Options:

A.

A route target is used to distinguish to which VRF table a prefix belongs.

B.

A route target appended to an IPv4 prefix produces a VPN-IPv4 prefix.

C.

Multiple route targets can be part of a single MP-BGP update.

D.

Route targets must be configured for VPRNs.

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Questions 59

A customer has sites on three different Alcatel-Lucent 7750 SRs. The customer requires a fully-meshed VPLS. Which of the following is TRUE?

Options:

A.

Each router requires 1 SDP.

B.

Each router requires 2 SDPs.

C.

Each router requires 3 SDPs.

D.

Each router requires 6 SDPs.

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Questions 60

Which of the following best describes how a MAC FDB is populated in a VPLS service?

Options:

A.

A VPLS service does not use a MAC FDB.

B.

The router reads the destination MAC address of frames passing through the service.

C.

The router reads the source MAC address of frames passing through the service.

D.

The router uses reverse ARP (RARP) to resolve the MAC addresses for unknown destinations.

E.

The router is programmed with MAC addresses by the network administrator.

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Exam Code: 4A0-C01
Exam Name: Nokia NRS II Composite Exam
Last Update: Jul 21, 2024
Questions: 852

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