Nokia 4A0-107 Exam Questions Instant Access

Question 1

Which of the following statements about buffer admission control techniques is FALSE?

AA packet is accepted into a queue based on its priority and forwarding class.

BBuffer admission control limits the number of out-of-profile packets that enter the queue.

CBoth high priority-only buffer space and WRED can be used in a queue.

DPriority is used when a packet enters a SAP-ingress queue.

Answer : C

Question 2

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)

AQoS is not configured on the router.

BPackets in forwarding classes 'be' and '12' are being queued.

CTraffic belonging to forwarding class 'ef' is not experiencing queuing delays.

DTraffic belonging to forwarding class '11 'will never make use of the shared buffer pool.

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

Answer : B, C

Question 3

Which of the following entities can scheduler policies be applied to? (Choose two)

ANetwork ingress port

BEpipe ingress SAP

CES egress SAP

DIngress MDA

EVPRN ingress interface

FShared buffer space

Answer : B, C

Question 4

Which of the following is an advantage of using queue-groups on a service SAP?

AIt enables CFHP.

BIt more scalable than using policers.

CIt allows a separate set of queues/policers for each VLAN on a port.

DIt allows a set of queues to be shared among multiple SAPs.

Answer : D

Question 5

Which of the following are entities of the Nokia 7750 SR on which you can NOT apply a network-queue policy? (Choose three)

ARouter interfaces

BIngress MDA

CIngress Ethernet network ports

DEgress Ethernet network ports

EService SAPs

Answer : A, C, E

Question 6

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

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

BWRED disables the TCP slow-start congestion control mechanism.

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

DWRED 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.

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

Answer : D

Question 7

Which of the following rate-limiting approaches are used on the Nokia 7750 SR? (Choose two)

AShapeless policing at SAP-ingress only.

BShapeless policing at SAP-ingress and egress.

CBiased round robin queuing at ingress only.

DSoft shaping at all network interfaces.

ESoft shaping at network ingress only.

Answer : D, E

Nokia Quality of Service 4A0-107 Exam Questions