Free Nokia 4A0-107 Practice Exam with Questions & Answers | Set: 7

Name: How to Pass 4A0-107 Exams
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SKU: 4a0-107
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Questions 61

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

Options:

A device that provides no differentiation between customer traffic flows.

A device that classifies and marks customer traffic.

A device that uses MPLS EXP bits to differentiate between traffic flows.

A device that creates macroflows towards the core from multiple customer sites.

A device that passes macroflows while optionally changing QoS markings.

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Questions 62

What is the maximum number of forwarding subclasses a forwarding class can have?

Options:

Questions 63

When using an egress port scheduler, which scheduling loop priority are orphaned queues serviced on?

Options:

1st

8th

9th

17th

Questions 64

A queue is configured with the following attributes:

MBS = 10KB

CBS = 5KB

High-Priority-Only = 30%

Assume that there is no CBS overbooking and that the slope-policy is disabled. If the current queue depth is 8KB, what will happen to an in-profile packet arriving in the queue?

Options:

It will be discarded because the high-priority-only threshold is exceeded.

It will be queued but re-marked as "out-of-profile."

It will be queued in the reserved portion of the buffer pool and remain "in-profile."

It will be queued in the shared portion of the buffer pool but contend for shared buffer space with packets from other queues.

It will be queued in the shared portion of the buffer pool but may be dropped if the buffer utilization exceeds the start-average value of the low slope.

Questions 65

4A0-107 Question 65

In the diagram shown above, applying policing and soft-policing on access ingress is typical for which of the following types of traffic?

Options:

Real-time

Assured

Best-effort

Self-generated

Questions 66

Which of the following fields in packets belonging to a Layer 3 service can be pre-marked on SAP-ingress?

Options:

Dot1p

DEI

EXP

DSCP/PREC

Questions 67

Which of the following statements are TRUE when discussing self-generated traffic QoS? (Choose two)

Options:

In order to mark Layer 2 traffic, sgt-qos will set various ToS bits.

DSCP bits can be set per application, per routing instance.

The DSCP marking stays nc1 for all applications. Only the internal FC is manipulated across different applications.

In order to mark Layer 2 self-generated traffic, network interfaces must be set to dot1Q.

The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.

Questions 68

Which of the following statements describe the primary objectives of the policing of traffic flows on the Nokia 7750 SR? (Choose two)

Options:

Ensure that traffic flows conform to their traffic profile.

Log violations of metered traffic flows exceeding the CIR value set on the entity across which the traffic is moving.

Provide fairness between traffic flows, so that conforming (in-profile) traffic flows are not starved of bandwidth and/or buffer space by non-conforming (out-of-profile) flows.

Minimize packet loss and reduce end to end latency.

Ensure that variable latencies do not cluster short bursts of originally conforming packets and render them nonconforming.

Questions 69

Which of the following about scheduling is TRUE?

Options:

HQoS schedulers cannot be children of an egress port-scheduler.

HQoS schedulers provide a dynamic method of allocating scheduling resources to queues.

HQoS scheduler policies can be applied to an MDA to schedule network ingress traffic.

A scheduler policy applied to multiple SAPs within the same service will result in a single hardware scheduler operating across all SAPs within the service.