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4A0-107 Nokia Quality of Service Exam

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Exam Name: Nokia Quality of Service
Exam Number: 4A0-107
Credit Towards Certifications: Nokia Service Routing Architect
Mandatory Exam Prerequisites: N/A
Exam Duration: 90 Minutes
Exam Appointment Duration: 135 minutes. This is the exam duration plus a 45 minute tutorial on computer-based examinations.
Number of Questions: 60
Language: English

For a list of candidate exam topics, please refer to the list of course objectives and modules in the course outline. The course overview page and course outline can be found here.

QUESTION 1
The IP ToS field consists of ________ bits, of which ________are used. The _________most significant (first) bits define precedence.

A. 8, 6, 3
B. 8, 8, 6
C. 16, 8, 4
D. 8, 6, 4
E. 24, 16, 8

Answer: A

QUESTION 2
Which of the following are examples of metrics for QoS?

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

Answer: C

QUESTION 3
What is the 6-bit binary representation of DSCP value AF21?

A. 010011
B. 100010
C. 010001
D. 001100
E. 010010

Answer: E

QUESTION 4
Which of the following statements regarding DSCP bits are TRUE? (Choose three)

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

Answer: A,B,D