Updated 4A0-107 Practice Test: Prepare for Your Nokia Quality of Service Certification Exam

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What is the 4A0-107 Nokia Quality of Service exam?

You may enhance your exam skills with the updated 4A0-107 practice test. However, when you decide to take the Nokia Quality of Service 4A0-107 exam, you must know the details first.

How to earn the Nokia Certified Service Routing Architect (SRA) certification?

The 4A0-107 Nokia Quality of Service exam is related to the Nokia Certified Service Routing Architect (SRA) certification. The Nokia SRA is the highest-level certification in the SRC program. It is designed for engineers who have the ambition to become an expert in all aspects of designing, building, and supporting Service Router networks and services.

Earning the Nokia SRA certification requires you to pass eight written exams (seven mandatory + one elective) and one practical lab exam.

Mandatory Exams:

1. Nokia IS-IS Routing Protocol 4A0-112 or Nokia OSPF Routing Protocol 4A0-113
2. Nokia Border Gateway Protocol for Internet Routing 4A0-102
3. Nokia Multiprotocol Label Switching 4A0-103
4. Nokia Services Architecture 4A0-104
5. Nokia Virtual Private LAN Services 4A0-105
6. Nokia Virtual Private Routed Networks 4A0-106
7. Nokia Quality of Service 4A0-107

You also can choose to pass the SRA Composite Exam 4A0-C02 instead of the following four written exams (4A0-102, 4A0-105, 4A0-106, and 4A0-107).

Elective Exams:

1. Nokia Multicast Protocols 4A0-108
2. Nokia Segment Routing 4A0-116
3. Nokia Ethernet Virtual Private Network Services 4A0-115

Nokia Quality of Service 4A0-107 Exam Details

The Nokia Quality of Service 4A0-107 exam is a mandatory exam, which contains 60 questions. It is available in English and lasts 90 minutes. It plays a crucial role in ensuring that telecommunications experts possess the necessary skills and knowledge to deliver high-quality services. By understanding the 4A0-107 exam’s importance, preparing diligently, and leveraging available resources, you can successfully navigate the challenges and emerge certified, reaping the benefits of enhanced skills and industry recognition.

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1. 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

2. 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

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

A. DSCP is part of the Layer 3 header.

B. DSCP is a 6-bit field.

C. DSCP specifies eight different priorities.

D. DSCP specifies four precedence levels.

E. DSCP is part of the Layer 2 header

F. DSCP specifies 128 different per-hop behaviors.

Answer: A,B

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

A. 8

B. 16

C. 6

D. 4

E. 3

Answer: C

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

A. Microflow reservations using RSVP

B. DSCP to EXP translation

C. Traffic classification

D. Automatic profiling and policy configuration

E. Buffer memory management

F. Traffic scheduling

Answer: C,E,F

6. Which of the following BEST describes a SAP when regarding QoS?

A. A point in the network where EXP bits can be mapped to one of eight predefined FCs, each one with its own queue.

B. A logical point in a service tunnel where all of customer traffic is aggregated.

C. A point at which the initial classification of customer traffic occurs.

D. A point in the network where QoS parameters are discarded in favor of lower-level hardware queuing functions, such as LLI (Link Layer Interleave).

E. A point in the network where traffic flows from multiple different services are queued together, based on forwarding class.

Answer: C

7. What is the maximum number of SAP-ingress policies that can be applied on a SAP?

A. 1

B. 2

C. 3

D. 4

E. 5

F. 8

Answer: A

8. Which of the following are possible criteria for classifying packets at the network port ingress on the Nokia 7750 SR? (Choose three)

A. The EXP bits in the MPLS header.

B. The packet's source and destination IP addresses.

C. The packet's DSCP bits.

D. The dot1p bits in the frame header.

E. The ID of an SDP that is transporting the packet.

Answer: A,C,D

9. What is the maximum number of forwarding subclasses a forwarding class can have?

A. 3

B. 64

C. 72

D. 16

E. 56

Answer: E

10. Which of the following statements BEST describes an MBS parameter?

A. It specifies the maximum rate at which a queue can be serviced.

B. It specifies the maximum depth of a queue beyond which packets will be dropped.

C. It specifies the portion of a queue that is taken from the reserved buffer pool.

D. It specifies the threshold beyond which only in-profile packets will be queued.

E. It specifies the peak bandwidth that can be attained by the incoming traffic.

Answer: B