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Questions # 11:

Which of the following statements regarding the default scheduler in the Nokia 7750 SR are TRUE? (Choose two)

Options:
A.

There are a maximum of 8 levels of priority serviced using a round-robin algorithm.

B.

The default scheduler will spend an equal amount of time in each queue, as long as there is traffic present

C.

The H1 internal forwarding class will receive its CIR before AF traffic.

D.

Orphaned queues will be scheduled out of the BE queue.

E.

A queue servicing EF and AF traffic will require explicit configuration to set the queue to expedited.

Questions # 12:

If packets egressing a SAP do not match any criteria defined in the SAP-egress policy, which forwarding class will these packets be assigned to?

Options:
A.

The default forwarding class defined in the SAP-egress policy.

B.

The forwarding class inherited from network ingress classification.

C.

Best Effort.

D.

If there is no match, packets will be dropped.

Questions # 13:

Which of the following fields is in the MPLS header?

Options:
A.

802.1p bits

B.

Precedence

C.

DSCP

D.

EXP

Questions # 14:

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

Options:
A.

Level 8 within CIR.

B.

Level 8 between CIR and PIR.

C.

Level 8, once all PIR is serviced.

D.

Level 1 within CIR.

E.

Level 1 between CIR and PIR.

F.

Level 1, once all PIR is serviced.

Questions # 15:

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

Options:
A.

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

B.

WRED disables the TCP slow-start congestion control mechanism.

C.

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

D.

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.

E.

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

Questions # 16:

Which of the following statements about queue modes, and profile marking of packets when leaving a queue is FALSE?

Options:
A.

Profile-mode and priority-mode queues can only be configured on SAP ingress.

B.

For network egress, egress re-classification can change the profile marked at ingress.

C.

For SAP egress, the profile marked at ingress may change based on the scheduling loop.

D.

For network ingress, the network policy can classify the packet as either in-profile, or out-of-profile.

Questions # 17:

Click the exhibit button below. Given the output of the #show pools 1/2/2 network-egress command on a GigE port, what can the service provider deduce? (Choose two)

Question # 17

Options:
A.

QoS is not configured on the router.

B.

Packets in forwarding classes "be" and "12" are being queued.

C.

Traffic belonging to forwarding class "ef" is not experiencing queuing delays.

D.

Traffic belonging to forwarding class "11 "will never make use of the shared buffer pool.

E.

Out-of-profile traffic in the shared buffer pool is being dropped.

Questions # 18:

If two queues complete for bandwidth in a hierarchical scheduler environment, which parameter is used by their parent scheduler to determine the priority with which each queue can use bandwidth above its committed rate?

Options:
A.

level

B.

cir-level

C.

weight

D.

cir-weight

Questions # 19:

Which following statements about the four-step QoS process (classification, queuing, scheduling, and marking/remarking) executed for every packet entering a Nokia 7750 SR is TRUE?

Options:
A.

The process happens only before the packet goes through the switching fabric.

B.

The process happens only before the packet goes onto the egress port.

C.

Marking/remarking the packets is for future classification.

D.

Marking/remarking the packets will occur right after classification of the packet.

Questions # 20:

Which of the following criteria is NOT used in the behavior aggregate classification option?

Options:
A.

dot1p

B.

dst-mac

C.

lsp-exp

D.

dscp

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