Nokia Quality of Service Exam (4A0-107) - Nk

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Sample 4A0-107 Exam Questions & Explanations

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Question #1 Verified Q&A
The IP ToS field consists of significant (first) bits define precedence. ________ bits, of which ________are used. The _________most
A 8, 6, 4
B 8, 6, 3
C 24, 16, 8
D 16, 8, 4
E 8, 8, 6
Correct Answer: 8, 6, 3
Question #2 Verified Q&A
Which of the following are examples of metrics for QoS?
A SNR, queue depth, latency
B Attenuation, dispersion, latency
C Delay, jitter, packet loss
D Signal degradation, attenuation, line loss
E Latency, FIFO, WRED
Correct Answer: Delay, jitter, packet loss
Question #3 Verified Q&A
What is the 6-bit binary representation of DSCP value AF21?
A 001100
B 010001
C 010010
D 010011
E 100010
Correct Answer: 010010
Question #4 Verified Q&A
Which of the following statements regarding DSCP bits are TRUE? (Choose three)
A To convert DSCP to IP precedence, the three most significant (first) bits are matched.
B DSCP provides for eight drop probabilities.
C The three most significant (first) bits define 8 forwarding classes.
D The full 8 bits of the TOS field are used for DSCP.
E The three least significant (last) bits of the DSCP specify the drop probability.
Correct Answer: To convert DSCP to IP precedence, the three most significant (first) bits are matched., The three most significant (first) bits define 8 forwarding classes., The three least significant (last) bits of the DSCP specify the drop probability.
Question #5 Verified Q&A
Which of the following can be used as classifiers of customer traffic? (Choose three)
A TCP/UDP port numbers
B IP DF bit
C HTML version number
D DSCP value
E 802.1p value
Correct Answer: TCP/UDP port numbers, DSCP value, 802.1p value

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