Question 1

What feature makes a traffic stream real-time?

Options :

A : Its rate fluctuates rapidly with time.

B : Its bandwidth requirements are high.

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

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

Answer: C

Question 2

Which of the following are major components of QoS functionality on the Nokia 7750 SR? (Choose three)

Options :

A : Microflow reservations using RSVP

B : DSCP to EXP translation

C : Traffic classification

D : Automatic profiling and policy configuration

E : Buffer memory management

F : Traffic scheduling

Answer: A,C

Question 3

An IOM3 card of a Nokia7750 SR is enabled with the default scheduler and the policy shown in the image isapplied to an access port on this card. In which order will packets be scheduled out of the queues? 4-A0-107-page110-image6

Options :

A : Queue 3 within-CIR packets, then queue 4 within-CIR packets, then queue 3 and queue 4 above-CIR packets in round-robin.

B : Queue 4 within-CIR packets, then queue 3 within-CIR packets, then queue 3 and queue 4 above-CIRpackets in round-robin.

C : Queue 3 within-CIR packets, then queue 4 within-CIR packets, then queue 3 above-CIR packets, andfinally queue 4 above-CIR packets.

D : Queue 4 within-CIR packets, then queue 3 within-CIR packets, then queue 4 above-CIR packets, and finally queue 3 above-CIR packets.

Answer: B

Question 4

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

Options :

A : DiffServ reserves resources dynamically using the RSVP protocol.

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

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

D : DiffServ is more scalable it treats traffic streams as aggregates.

Answer: D

Question 5

Click the exhibit button below. Given that the slope-policy (below) has been enabled and applied on a networkport, which of the following statements are TRUE? (Choose three) 4-A0-107-page110-image17

Options :

A : All out-of-profile traffic will be dropped before any in-profile is dropped.

B : The time average factor of 0 will discard all packets arriving in the shared buffer pool.

C : When the shared buffer utilization reaches 51%, in-profile packets might be dropped.

D : The highest probability with which an out-of-profile packet can be dropped is 20%.

E : When an in-profile packet arrives and the shared buffer utilization is at 69%, the packet will haveapproximately a 60% likelihood of being discarded.

Answer: A,C

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