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Nokia 4A0-107 Practice Test - Questions Answers, Page 18

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Question 171

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How does a shaper rate-limit a traffic stream?

Question 172

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Which action does the packet remarking process perform?

Question 173

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Which of the following statements describes an advantage of the DiffServ QoS model over the IntServ QoS model?

Question 174

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Which of the following statements defines the committed information rate?

Question 175

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Why are the four QoS steps (classification, queuing, scheduling, and marking/remarking) executed twice for every packet entering a 7750 SR router?

Question 176

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What feature makes a traffic stream real-time?

Question 177

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In a Nokia 7750 SR, which of the following is a class type that is intended for non-real-time customer traffic that requires some committed bandwidth?

Question 178

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Refer to the exhibit. In the image shown above, the SAP-ingress policy is applied properly to a Nokia 7750 SR. A packet is received from an IP address of 192.168.2.2 with DSCP set to AF. Which fo

Question 179

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In a Nokia 7750 SR, which of the following QoS policies CANNOT include packet classification criteria?

Question 180

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Refer to the exhibit. In the image shown above, the network QoS policy is applied properly to a Nokia 7750 SR. An MPLS packet with dot1p=1, EXP=4, and DSCP=AF is received. Which forwarding class

Question 171

How does a shaper rate-limit a traffic stream?

Packets that arrive in a burst are immediately dropped; packets that arrive with the proper in between space are immediately.

Packets are buffered on arrival and are forwarded at an average rate conforming with PIR, typically, with a reduced burstiness.

Packets with an average arrival rate higher than PIR are immediately dropped; conforming packets are forwarded at the same rate at which they arrive.

Packets with an average arrival rate higher than PIR are buffered for future processing; conforming packets are immediately forwarded.

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Question 172

Which action does the packet remarking process perform?

It determines the packet's forwarding class based on classification criteria

It modifies the current packet's forwarding class to indicate promotion or demotion

It sets the TOS, DSCP, EXP, or Dot1p field based on classification criteria

It modifies the current TOS, DSCP, EXP, or Dot1p marking to indicate promotion or demotion

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Question 173

Which of the following statements describes an advantage of the DiffServ QoS model over the IntServ QoS model?

DiffServ reserves resources dynamically using the RSVP protocol.

DiffServ only requires packets to be classified into forwarding classes at the first network hop.

DiffServ provides granular differentiation and superior fairness because it processes traffic streams individually.

DiffServ is more scalable it treats traffic streams as aggregates.

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Question 174

Which of the following statements defines the committed information rate?

It is the rate at which a traffic stream is offered to a queue.

It is the rate at which packets are forwarded out of a queue.

It is the minimum rate at which packets may be forwarded out of a queue.

It is the maximum rate at which packets may be forwarded out of a queue.

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Question 175

Why are the four QoS steps (classification, queuing, scheduling, and marking/remarking) executed twice for every packet entering a 7750 SR router?

Once before going through each of the redundant switching fabrics.

To protect against failure of either ingress or egress card.

Once before going through the switching fabric, and once more before going onto the egress port.

Once to decide if the packet is in-profile or out-of-profile, and once more to process the packet according to its profile.

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Question 176

What feature makes a traffic stream real-time?

Its rate fluctuates rapidly with time.

Its bandwidth requirements are high.

Time between packets remains unchanged and end-to-end delay is kept to a minimum.

All packets received are guaranteed to be delivered to the destination.

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Question 177

In a Nokia 7750 SR, which of the following is a class type that is intended for non-real-time customer traffic that requires some committed bandwidth?

Gold

Assured

High Priority

Best Effort

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In the image shown above, the SAP-ingress policy is applied properly to a Nokia 7750 SR. A packet is received from an IP address of 192.168.2.2 with DSCP set to AF. Which forwarding class and priority level is assigned to this packet?

NC, low

NC, high

BE, low

BE, high

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Question 179

In a Nokia 7750 SR, which of the following QoS policies CANNOT include packet classification criteria?

SAP-ingress

SAP-egress

Network-queue

Network

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Question 180

Refer to the exhibit.

In the image shown above, the network QoS policy is applied properly to a Nokia 7750 SR. An MPLS packet with dot1p=1, EXP=4, and DSCP=AF is received. Which forwarding class and profile is assigned to this packet?

EF, in

H1, out

BE, out

L1, in

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Total 231 questions