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Nokia 4A0-107 Practice Test - Questions Answers, Page 2

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Which parameter can be configured in a network ingress QoS policy?
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?
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 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?
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 11

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Which of the following statements regarding buffer pool allocation are FALSE? (Choose two)

A.
Each network egress port receives its own buffer pool.
A.
Each network egress port receives its own buffer pool.
Answers
B.
Each SAP-egress port receives its own buffer pool.
B.
Each SAP-egress port receives its own buffer pool.
Answers
C.
All SAP-ingress ports on the same MDA share a buffer pool.
C.
All SAP-ingress ports on the same MDA share a buffer pool.
Answers
D.
All the network ingress ports on the same MDA share a buffer pool.
D.
All the network ingress ports on the same MDA share a buffer pool.
Answers
E.
Each network ingress port on the same MDA receives its own buffer pool.
E.
Each network ingress port on the same MDA receives its own buffer pool.
Answers
Suggested answer: C, E

Question 12

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The IP ToS field consists of ________ bits, of which ________are used. The _________most significant (first) bits define precedence.

A.
8, 6, 3
A.
8, 6, 3
Answers
B.
8, 8, 6
B.
8, 8, 6
Answers
C.
16, 8, 4
C.
16, 8, 4
Answers
D.
8, 6, 4
D.
8, 6, 4
Answers
E.
24, 16, 8
E.
24, 16, 8
Answers
Suggested answer: A

Question 13

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Which of the following are examples of metrics for QoS?

A.
Signal degradation, attenuation, line loss
A.
Signal degradation, attenuation, line loss
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B.
Latency, FIFO, WRED
B.
Latency, FIFO, WRED
Answers
C.
Delay, jitter, packet loss
C.
Delay, jitter, packet loss
Answers
D.
SNR, queue depth, latency
D.
SNR, queue depth, latency
Answers
E.
Attenuation, dispersion, latency
E.
Attenuation, dispersion, latency
Answers
Suggested answer: C

Question 14

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What is the 6-bit binary representation of DSCP value AF21?

A.
010011
A.
010011
Answers
B.
100010
B.
100010
Answers
C.
010001
C.
010001
Answers
D.
001100
D.
001100
Answers
E.
010010
E.
010010
Answers
Suggested answer: E

Question 15

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Which of the following statements regarding DSCP bits are TRUE? (Choose three)

A.
The three most significant (first) bits define 8 forwarding classes.
A.
The three most significant (first) bits define 8 forwarding classes.
Answers
B.
The three least significant (last) bits of the DSCP specify the drop probability.
B.
The three least significant (last) bits of the DSCP specify the drop probability.
Answers
C.
The full 8 bits of the TOS field are used for DSCP.
C.
The full 8 bits of the TOS field are used for DSCP.
Answers
D.
To convert DSCP to IP precedence, the three most significant (first) bits are matched.
D.
To convert DSCP to IP precedence, the three most significant (first) bits are matched.
Answers
E.
DSCP provides for eight drop probabilities.
E.
DSCP provides for eight drop probabilities.
Answers
Suggested answer: A, B, D

Question 16

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Which of the following can be used as classifiers of customer traffic? (Choose three)

A.
DSCP value
A.
DSCP value
Answers
B.
802.1p value
B.
802.1p value
Answers
C.
IP DF bit
C.
IP DF bit
Answers
D.
TCP/UDP port numbers
D.
TCP/UDP port numbers
Answers
E.
HTML version number
E.
HTML version number
Answers
Suggested answer: A, B, D

Question 17

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Which of the following are characteristics of DSCP? (Choose two)

A.
DSCP is part of the Layer 3 header.
A.
DSCP is part of the Layer 3 header.
Answers
B.
DSCP is a 6-bit field.
B.
DSCP is a 6-bit field.
Answers
C.
DSCP specifies eight different priorities.
C.
DSCP specifies eight different priorities.
Answers
D.
DSCP specifies four precedence levels.
D.
DSCP specifies four precedence levels.
Answers
E.
DSCP is part of the Layer 2 header
E.
DSCP is part of the Layer 2 header
Answers
F.
DSCP specifies 128 different per-hop behaviors.
F.
DSCP specifies 128 different per-hop behaviors.
Answers
Suggested answer: A, B

Question 18

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What is an SLA? (Choose two)

A.
An SLA is used to provide automated, real-time testing and alarming for throughput, latency, and jitter across a provider's network.
A.
An SLA is used to provide automated, real-time testing and alarming for throughput, latency, and jitter across a provider's network.
Answers
B.
An SLA is an agreement between a customer and a provider that dictates the treatment of customer traffic across the provider's network.
B.
An SLA is an agreement between a customer and a provider that dictates the treatment of customer traffic across the provider's network.
Answers
C.
An SLA allows customers to control all traffic within the service provider's network by prioritizing their traffic over others as desired.
C.
An SLA allows customers to control all traffic within the service provider's network by prioritizing their traffic over others as desired.
Answers
D.
An SLA allows a customer to pre-mark traffic and ensure that traffic is treated as per the agreement within the provider's network.
D.
An SLA allows a customer to pre-mark traffic and ensure that traffic is treated as per the agreement within the provider's network.
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E.
An SLA is a standard set of network QoS policies that a provider shares to all its customers, allowing them to better understand the treatment of traffic within the provider's network.
E.
An SLA is a standard set of network QoS policies that a provider shares to all its customers, allowing them to better understand the treatment of traffic within the provider's network.
Answers
Suggested answer: B, D

Question 19

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How many bits does DSCP use to provide QoS marking options?

A.
8
A.
8
Answers
B.
16
B.
16
Answers
C.
6
C.
6
Answers
D.
4
D.
4
Answers
E.
3
E.
3
Answers
Suggested answer: C

Question 20

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

A.
Microflow reservations using RSVP
A.
Microflow reservations using RSVP
Answers
B.
DSCP to EXP translation
B.
DSCP to EXP translation
Answers
C.
Traffic classification
C.
Traffic classification
Answers
D.
Automatic profiling and policy configuration
D.
Automatic profiling and policy configuration
Answers
E.
Buffer memory management
E.
Buffer memory management
Answers
F.
Traffic scheduling
F.
Traffic scheduling
Answers
Suggested answer: C, E, F
Total 231 questions
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