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Your Path to Success: How to Pass the Nokia 4A0-C02 Nokia SRA Composite Exam Exam

Questions 76

WRED can be used to help avoid TCP slow-start synch problems.

Options:

A.

TRUE

B.

FALSE

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Questions 77

Which of the following entities can scheduler policies be applied to? (Choose two)

Options:

A.

Network ingress port

B.

Epipe ingress SAP

C.

ES egress SAP

D.

Ingress MDA

E.

VPRN ingress interface

F.

Shared buffer space

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Questions 78

Click the exhibit button below.

4A0-C02 Question 78

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)

Options:

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.

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Questions 79

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

Options:

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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Questions 80

Which of the following statements are TRUE regarding the remarking of packets arriving on the network interface whose ToS-marking-state is set to trusted and remarking enabled on network egress? (Choose two)

Options:

A.

Native IP Packets will not be remarked.

B.

Native IP Packets will be remarked.

C.

Packets associated with a VPRN service on an upstream node will not be remarked.

D.

Packets associated with an ES service on an upstream node will be remarked.

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Questions 81

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

4A0-C02 Question 81

Options:

A.

All AF traffic will be marked "in-profile" at the SAP-ingress.

B.

All TCP traffic will be mapped to forwarding class EF.

C.

UDP traffic is placed in queue 3 while ICMP traffic is placed in queue 5.

D.

EF traffic will receive higher scheduling priority than H2 traffic.

E.

Traffic that does not match any of the IP criteria will be placed in queue 3.

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Questions 82

According to the SAP-egress policy configured and applied, which queue will EF traffic use?

4A0-C02 Question 82

Options:

A.

Queue 2 in "policer-output-queues," the default queue group used by policers on egress, because there are no queues in the "qg-10" queue-group template.

B.

The local SAP's queue 1, because there is no queue in the "qg-10" queue-group template for EF traffic.

C.

Queue 1 in the "qg-10" queue-group, because it exists by default and all traffic is mapped to it.

D.

EF traffic is dropped because there are no queues in the "qg-10" queue-group template.

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Questions 83

Which of the following are examples of metrics for QoS?

Options:

A.

Signal degradation, attenuation, line loss

B.

Latency, FIFO, WRED

C.

Delay, jitter, packet loss

D.

SNR, queue depth, latency

E.

Attenuation, dispersion, latency

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Questions 84

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

Options:

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.

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Questions 85

Real-time rate limiting on the service ingress is a feature that performs_____________. Traffic above the defined PIR is ______________.

Options:

A.

Policing, expedited

B.

Metering, marked discard eligible

C.

Marking, marked discard eligible

D.

Policing, discarded

E.

Shaping, discarded

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Questions 86

Which of the following are the minimum requirements needed to classify traffic marked with DSCP AF11, AF12, and AF13 into the AF forwarding class and provide fair treatment to the drop precedence settings? (Choose three)

Options:

A.

Profile mode queues

B.

Priority mode queues

C.

1 queue

D.

3 queues

E.

3 forwarding classes

F.

1 forwarding class, with 2 subclasses

G.

1 forwarding class, with 3 subclasses

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Questions 87

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

Options:

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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Questions 88

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 88

Options:

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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Questions 89

In the image shown above, the SAP-ingress policy is applied properly to a Nokia 7750 SR. A traffic stream is received from an IP address of 192.168.1.1 with DSCP set to EF. Which forwarding class and priority level is used for this traffic stream?

4A0-C02 Question 89

Options:

A.

FC H1, high

B.

FC EF, high

C.

FC H2, low

D.

FC EF, low

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Questions 90

Which of the following statements BEST describes where shaping mechanisms should be applied?

Options:

A.

On all ports on the Alcatel-Lucent 7750 SR.

B.

At the junction of high-speed to low-speed links or at places of traffic aggregation.

C.

At the junction of low-speed to high-speed links or at places of traffic aggregation.

D.

On low-speed WAN links.

E.

Nowhere. Shaping is only performed in hardware and serviced in a round-robin.

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Exam Code: 4A0-C02
Exam Name: Nokia SRA Composite Exam
Last Update: Dec 9, 2024
Questions: 639

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