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Nokia 4A0-107 Practice Test - Questions Answers, Page 13

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Question 121

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On the Nokia 7750 SR, what is a slope policy used for?

Question 122

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On the Nokia 7750 SR, how many queues per FC are available for multipoint traffic within a VPLS on service ingress?

Question 123

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Which of the following are entities of the Nokia 7750 SR on which you can NOT apply a network-queue policy? (Choose three)

Question 124

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

Question 125

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

Question 126

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When deploying a Nokia MPLS network with QoS, how are the EXP bits set?

Question 127

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In which policies, on the Nokia 7750 SR. is classification performed? (Choose three)

Question 128

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Which of the following are categories of forwarding classes on the Nokia 7750 SR? (Choose two)

Question 129

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Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)

Question 130

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Which of the following rate-limiting approaches are used on the Nokia 7750 SR? (Choose two)

Question 121

On the Nokia 7750 SR, what is a slope policy used for?

Defining the slope of the TCP slow-start mechanism for self generated traffic.

Defining the slope of the scheduling rate per forwarding class when using HQoS.

Defining the high and low slope values when deploying buffer admission control for UDP traffic in the committed buffer pool.

Defining the high and low slope values when deploying buffer admission control for TCP traffic in the shared buffer pool.

Defining the high and low slope values when deploying buffer admission control for TCP traffic in the committed buffer pool.

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Question 122

On the Nokia 7750 SR, how many queues per FC are available for multipoint traffic within a VPLS on service ingress?

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Question 123

Which of the following are entities of the Nokia 7750 SR on which you can NOT apply a network-queue policy? (Choose three)

Router interfaces

Ingress MDA

Ingress Ethernet network ports

Egress Ethernet network ports

Service SAPs

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Question 124

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

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Question 125

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 126

When deploying a Nokia MPLS network with QoS, how are the EXP bits set?

The first 3 bits of the DSCP value are copied directly into the EXP field on the first network egress.

The EXP bits are set on the first network egress, based on a combination of the SAP-ingress classification and the network policy applied.

The 3 priority bits are copied directly from the dot1p header into the EXP field of the first MPLS header.

The EXP bits are set based on a default map that translates DSCP codes into internal forwarding classes on SAP-ingress.

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Question 127

In which policies, on the Nokia 7750 SR. is classification performed? (Choose three)

SAP-ingress policy

SAP-egress policy

IP-criteria policy

Network-queue policy

Slope policy

Network policy

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Question 128

Which of the following are categories of forwarding classes on the Nokia 7750 SR? (Choose two)

Real-time

Assured

Non-conforming

High priority

In-profile

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Question 129

Which of the following statements describe the operation of WRED on the Nokia 7750 SR? (Choose three)

WRED monitors the shared buffer space utilization over a period of time.

WRED disables the TCP slow-start congestion control mechanism.

WRED uses two configurable slopes for each buffer pool: a high slope and a low slope.

WRED uses the shared buffer utilization, instead of the individual queue depth, to get a better picture of the average resource utilization of the shared buffer space.

WRED polices the shared buffer pool and marks all packets above a certain rate as 'discard eligible.'

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