Nokia 4A0-107 Exam Practice Test Instant Access

Question 1

Which of the following statements about port schedulers is TRUE?

AA port scheduler can only be implemented on a network egress port when queue-groups are configured for that port.

BA port scheduler can be implemented on an access ingress port.

CA port scheduler can be implemented without HQoS on an access egress port.

DA port scheduler can be implemented on a network ingress port.

Answer : C

Question 2

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?

A55 Mbps / 1.1 = 50 Mbps

B55 Mbps

C55 Mbps + 55 Mbps * 0.1 / 1.1 = 60 Mbps

D55 Mbps * 1.1 = 60.5 Mbps

Answer : D

Question 3

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

A1st

B8th

C9th

D17th

Answer : A

Question 4

Refer to the exhibit.

Based on the image shown above, and assuming that the default scheduler of the Nokia 7750 SR is on an IOM2 card, in which order will packets be scheduled?

AQueue 6 within-CIR packets, then queue 5 within-CIR packets, then queue 5 and queue 6 above-CIR packets in round-robin.

BQueue 6 within-CIR packets, then queue 5 within-CIR packets, then queue 5 and queue 6 above-CIR packets in biased round-robin.

CQueue 6 within-CIR packets, then queue 5 within-CIR packets, then queue 6 above-CIR packets, and finally queue 5 above-CIR packets.

DQueue 6 and queue 5 within-CIR packets in biased round-robin, then queue 5 and queue 6 above-CIR packets in round-robin.

Answer : B

Question 5

How many tiers of schedulers can be supported in hierarchical scheduling on the Nokia 7750 SR?

Answer : B

Question 6

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?

Alevel

Bcir-level

Cweight

Dcir-weight

Answer : C

Question 7

When we select the adaptation rule ''min'', how are the operational CIR/PIR rates of a queue calculated?

AThe administrative PIR values are ignored and both operational rates are set to the minimum residual rate allowed by the hardware.

BThe administrative PIR value is ignored and both operational rates are set to the administrative CIR value.

CThey are chosen as the largest multiple of the hardware rate step that is less than or equal to the corresponding CIR/PIR administrative value.

DThey are chosen as the smallest multiple of the hardware rate step that is greater than or equal to the corresponding CIR/PIR administrative value.

Answer : D

Nokia 4A0-107 Nokia Quality of Service Exam Practice Test