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Nokia 4A0-107 Practice Test - Questions Answers

Question list

List of questions

Question 1

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Which of the following statements are TRUE? (Choose two)

Question 2

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Click the exhibit button below. A network operator has configured the SAP-ingress policy below. Ping traffic is expected in queue 3. However, the network operator notices that all traffic is placed

Question 3

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Which of the following are possible criteria for classifying packets at the SAP-ingress? (Choose three)

Question 4

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With hierarchical scheduling, up to ___________ tiers are supported on the Nokia 7750 SR.

Question 5

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Based on queue usage, which of the following QoS-policies when combined will allow queue rates to be dynamically allocated? (Choose two)

Question 6

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

Question 7

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Which of the following statements regarding scheduling on the Nokia 7750 SR is TRUE? (Choose two)

Question 8

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Which of the following fields can be marked or remarked for frames belonging to a Layer 2 service?

Question 9

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Click the exhibit button below. 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

Question 10

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Which of the following statements is considered best practice when changing a network policy that has been associated with an interface?

Question 1

Which of the following statements are TRUE? (Choose two)

The primary contributors to latency are distance, scheduling, and congestion.

The weighted round robin scheduling algorithm will result in more delay for high priority traffic than the regular round robin algorithm.

The round robin scheduling algorithm will result in less jitter for low priority traffic than a strict priority scheduler.

Packet loss can be reduced by decreasing the amount of buffer space available to a queue.

Latency can be reduced by increasing the amount of buffer space available to a queue.

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Click the exhibit button below. A network operator has configured the SAP-ingress policy below. Ping traffic is expected in queue 3. However, the network operator notices that all traffic is placed in queue 1. What is the most probable reason for this?

The default forwarding class for all traffic, including ICMP, is BE, which is placed in queue 1.

The SAP has been shut down.

The IP-match criteria has been misconfigured for ICMP traffic.

Queue 3 has no rate or CIR configured and thus cannot hold any packets.

The SAP-ingress policy has not been applied to the SAP.

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Question 3

Which of the following are possible criteria for classifying packets at the SAP-ingress? (Choose three)

The EXP bits in the MPLS header.

The packet's source and destination IP addresses.

The service ID of the service to which the SAP belongs.

The dot1p bits in the frame header.

The packet's Ethertype.

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Question 4

With hierarchical scheduling, up to ___________ tiers are supported on the Nokia 7750 SR.

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Question 5

Based on queue usage, which of the following QoS-policies when combined will allow queue rates to be dynamically allocated? (Choose two)

The slope-policy

The SAP-ingress policy

The network-queue policy

The scheduler-policy

The network-policy

The WRED-policy

The arbitrator-policy

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Question 6

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

Policing, expedited

Metering, marked discard eligible

Marking, marked discard eligible

Policing, discarded

Shaping, discarded

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Question 7

Which of the following statements regarding scheduling on the Nokia 7750 SR is TRUE? (Choose two)

When using profile-mode queues, traffic that is marked as in-profile on ingress and scheduled in the above-CIR loop will still be considered as in-profile at egress.

When an HQoS strategy using an egress port-scheduler has been deployed, Tier 1 receives its scheduling rates based on the amount of egress bandwidth available for each forwarding class.

The greater the difference between PIR and CIR rates in a queue, the less likely a CIR will be provided.

Packets scheduled out of high-priority queues in the default scheduler will have a lower chance of packet loss at the expense of incurring a higher probability of delay.

When using priority-mode queues, traffic that is marked as in-profile on ingress and scheduled in the above-CIR loop will be considered as in-profile at egress.

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Question 8

Which of the following fields can be marked or remarked for frames belonging to a Layer 2 service?

DSCP

PREC

Dot1p

ToS

Q-in-Q

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Question 9

Click the exhibit button below.

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)

The DSCP value will be set to af21.

The DSCP value will be set to af23.

The DSCP value will remain as ef.

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

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

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