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Nokia 4A0-107 - Nokia Quality of Service

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Total 231 questions

Which of the following statements regarding the egress port scheduler is TRUE?

A.

The egress port scheduler can have up to 17 children spread across 8 levels.

B.

Multiple egress port schedulers can be assigned to a single port with many HQoS children.

C.

Multiple HQoS policies can be children of a single port scheduler.

D.

Multiple egress port schedulers can be children of a single HQoS scheduler.

Which of the following policies does NOT exist by default on a network port?

A.

A network policy for every network interface configured on the port.

B.

A slope policy for the port on ingress.

C.

A network queue policy for the corresponding MDA on ingress.

D.

A network queue policy for the port on egress.

Assume all transmitted frames on a SONET port are 1500 bytes and that the average frame overhead has been configured as 10%. If the total bandwidth of all queues, excluding overhead, needs to be guaranteed at 55 Mbps, how much bandwidth should be configured for the egress port scheduler applied on that port?

A.

55 Mbps / 1.1 = 50 Mbps

B.

55 Mbps

C.

55 Mbps + 55 Mbps * 0.1 / 1.1 = 60 Mbps

D.

55 Mbps * 1.1 = 60.5 Mbps

Click the exhibit button below.

Based on the configuration of the network policy (below), what will be the forwarding class associated with a MPLS encapsulated customer packet that arrives on a dotlQ encapsulated network port 1/1/4:1 on P1 with the following characteristics:

EXP value = 6

DSCP value = cs1

Dot1pvalue = 3

A.

EF

B.

H1

C.

L1

D.

H2

E.

L2

Which action does the packet remarking process perform?

A.

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

B.

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

C.

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

D.

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

Forwarding sub-classes are configured in the context of which QoS policy type?

A.

Network

B.

Scheduler

C.

Slope

D.

SAP-ingress

E.

Network queue

Which of the following is NOT an adaptation rule supported on the Nokia 7750 SR for calculating the operational CIR/PIR of a queue?

A.

Closest

B.

Average

C.

Min

D.

Max

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

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.

Which of the following statements about a SAP-ingress policy is FALSE?

A.

It maps customer traffic to forwarding classes on ingress.

B.

It can use customer QoS markings to do the mapping.

C.

The default SAP-ingress policy classifies all traffic into FC “be” with low priority.

D.

It serves the classification, queuing, and marking functions of QoS but does not serve scheduling

Which of the following statements about the bandwidth allocation criteria used by an egress port scheduler is TRUE?

A.

The available bandwidth of the port is divided in a strict priority over its children.

B.

Expedited queues must be serviced before best-effort queues.

C.

Orphaned queues are serviced on the 8th scheduling priority.

D.

The configured CIR dictates the maximum port bandwidth that can be allocated during the within-CIR pass for that level.