Question 1

Which of the following statements about CIR of a queue is TRUE?

Options :

A : It may exceed PIR of the queue.

B : It may be exceeded by the average servicing rate of the queue.

C : It varies depending on the traffic characteristics.

D : It is the rate at which packets are forwarded out of the queue.

Answer: D

Question 2

By default, how does a hybrid port on a Nokia 7750 SR share its allocated buffer space between access and

network pools?

Options :

A :

All buffer space is initially allocated to access pools, and some of it is reallocated to network pools if

network interfaces are configured on it.

B :

All buffer space is initially allocated to network pools, and some of it is reallocated to access pools if

service SAPs are configured on it.

C :

Buffer space is allocated 50% for access pools and 50% for network pools.

D : Buffer space is allocated 25% for access pools and 75% for network pools.

Answer: C

Question 3

An IOM3 card of a Nokia7750 SR is enabled with the default scheduler and the policy shown in the image is

applied to an access port on this card. In which order will packets be scheduled out of the queues?

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-CIR

packets in round-robin.

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

It is necessary for Tier 1 schedulers to obtain bandwidth from a higher tier scheduler.

Options :

A : TRUE

B : FALSE

Answer: B

Question 5

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

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