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Nokia 4A0-107 Practice Test - Questions Answers, Page 14

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How many tiers of schedulers can be supported in hierarchical scheduling on the Nokia 7750 SR?
Which of the following CANNOT be used as external marking bits?
At which points can traffic be marked or remarked on the Nokia 7750? (Choose two)
Which parameter can be configured in a network ingress QoS policy?
Which of the following should be performed if a service provider does not want packets to make use of the shared buffer space when queued?
On the Nokia 7750 SR, what is the maximum number of ingress queues that a single network queue policy can support in a VPLS?
According to the SAP-ingress QoS policy shown, which packets have a higher priority to enter queue 2?
What can be learned from the output of the command ''show pools 1/2/2 network-egress'' on the GigE port?
Which of the following statements about queue modes, and profile marking of packets when leaving a queue is FALSE?
Which of the following about scheduling is TRUE?

Question 131

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On the Nokia 7750 SR, what is the maximum number of queues that a single SAP-ingress policy can support in a VPLS?

A.
16
A.
16
Answers
B.
8
B.
8
Answers
C.
32
C.
32
Answers
D.
48
D.
48
Answers
E.
56
E.
56
Answers
Suggested answer: C

Question 132

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

A.
There are a maximum of 8 levels of priority serviced using a round-robin algorithm.
A.
There are a maximum of 8 levels of priority serviced using a round-robin algorithm.
Answers
B.
The default scheduler will spend an equal amount of time in each queue, as long as there is traffic present
B.
The default scheduler will spend an equal amount of time in each queue, as long as there is traffic present
Answers
C.
The H1 internal forwarding class will receive its CIR before AF traffic.
C.
The H1 internal forwarding class will receive its CIR before AF traffic.
Answers
D.
Orphaned queues will be scheduled out of the BE queue.
D.
Orphaned queues will be scheduled out of the BE queue.
Answers
E.
A queue servicing EF and AF traffic will require explicit configuration to set the queue to expedited.
E.
A queue servicing EF and AF traffic will require explicit configuration to set the queue to expedited.
Answers
Suggested answer: C, E

Question 133

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How does an IOM3 improve the queue usage over an IOM2 in a Nokia 7750 SR? (Choose two)

A.
The IOM3 adds more memory to both forwarding complexes which increases the total number of queues available.
A.
The IOM3 adds more memory to both forwarding complexes which increases the total number of queues available.
Answers
B.
The IOM3 only contains a single forwarding complex which reduces the number of queues used.
B.
The IOM3 only contains a single forwarding complex which reduces the number of queues used.
Answers
C.
The IOM3 allows multiple forwarding classes to be assigned to a single queue.
C.
The IOM3 allows multiple forwarding classes to be assigned to a single queue.
Answers
D.
The IOM3 allows queues to be dynamically allocated between ingress and egress.
D.
The IOM3 allows queues to be dynamically allocated between ingress and egress.
Answers
E.
The IOM3 has a larger CPU capable of tracking active hardware queue utilization and adjusting memory allocation accordingly.
E.
The IOM3 has a larger CPU capable of tracking active hardware queue utilization and adjusting memory allocation accordingly.
Answers
Suggested answer: B, D

Question 134

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Which of the following statements about the consequences of congestion is TRUE?

A.
Negative jitter results in a smaller than expected interval between transmitted packets.
A.
Negative jitter results in a smaller than expected interval between transmitted packets.
Answers
B.
Jitter does not have any effect on the quality of video applications.
B.
Jitter does not have any effect on the quality of video applications.
Answers
C.
Serialization delay is not affected by congestion.
C.
Serialization delay is not affected by congestion.
Answers
D.
Queuing delay is a fixed form of delay in networks.
D.
Queuing delay is a fixed form of delay in networks.
Answers
Suggested answer: A

Question 135

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Which of the following statements about the DiffServ and IntServ QoS models is FALSE?

A.
IntServ uses a protocol like RSVP to provide QoS guarantees on a per-flow basis.
A.
IntServ uses a protocol like RSVP to provide QoS guarantees on a per-flow basis.
Answers
B.
DiffServ groups multiple microflows into bigger streams called macro flows.
B.
DiffServ groups multiple microflows into bigger streams called macro flows.
Answers
C.
Intserv requires that network routers allocate resources for thousands of individual flows.
C.
Intserv requires that network routers allocate resources for thousands of individual flows.
Answers
D.
Diffserv classifies packets into forwarding classes only at the first network hop.
D.
Diffserv classifies packets into forwarding classes only at the first network hop.
Answers
Suggested answer: D

Question 136

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Which of the statements about packet classification is TRUE?

A.
It sets the destination IP address of the packet.
A.
It sets the destination IP address of the packet.
Answers
B.
It uses RVSP to inform other QoS capable routers how the packet should be treated.
B.
It uses RVSP to inform other QoS capable routers how the packet should be treated.
Answers
C.
It sets the TOS, DSCP, EXP, or DOT1p field based on classification criteria.
C.
It sets the TOS, DSCP, EXP, or DOT1p field based on classification criteria.
Answers
D.
It can use a customer's encapsulated data to determine a packet's forwarding class.
D.
It can use a customer's encapsulated data to determine a packet's forwarding class.
Answers
Suggested answer: C

Question 137

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Which of the following egress points does NOT support egress reclassification?

A.
Spoke-SDPs bound to an IES
A.
Spoke-SDPs bound to an IES
Answers
B.
Spoke-SDPs bound to a VPRN interface
B.
Spoke-SDPs bound to a VPRN interface
Answers
C.
SAPs
C.
SAPs
Answers
D.
Network interfaces
D.
Network interfaces
Answers
Suggested answer: D

Question 138

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Which of the following modules has 768 MB of buffer memory that dynamically allocates between its two MDAs?

A.
IOM3
A.
IOM3
Answers
B.
FP3 based IMM
B.
FP3 based IMM
Answers
C.
IOM1
C.
IOM1
Answers
D.
IOM2
D.
IOM2
Answers
Suggested answer: A

Question 139

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Which ports on the same MDA share a buffer pool in a Nokia 7750 SR?

A.
Access ingress ports
A.
Access ingress ports
Answers
B.
Access egress ports
B.
Access egress ports
Answers
C.
Network ingress ports
C.
Network ingress ports
Answers
D.
Network egress ports
D.
Network egress ports
Answers
Suggested answer: D

Question 140

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Which of the following statements about configuring queues to use shared or reserved buffer space is FALSE?

A.
When queues use shared buffer space, buffers are more efficiently utilized.
A.
When queues use shared buffer space, buffers are more efficiently utilized.
Answers
B.
Queues that use reserved buffer space will have memory available for their reserved portion.
B.
Queues that use reserved buffer space will have memory available for their reserved portion.
Answers
C.
When a queue is not using its reserved portion, other queues can use it.
C.
When a queue is not using its reserved portion, other queues can use it.
Answers
D.
Using reserved buffer space prevents a queue from being starved of buffer resources by other queues.
D.
Using reserved buffer space prevents a queue from being starved of buffer resources by other queues.
Answers
Suggested answer: C
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