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Nokia 4A0-107 Exam Overview:

Certification Vendor:Nokia
Exam Name:Nokia Quality of Service
Exam Number:4A0-107
Exam Duration:90 minutes
Real Exam Qty:40
Certificate Validity Period:3 years
Available Languages:English
Related Certifications:Nokia Service Routing Architect (SRA)
Nokia Network Routing Specialist II (NRS II)
Exam Format:Multiple-choice, Scenario-based questions
Passing Score:57% (approx. 23/40)
Exam Price:$125 USD
Recommended Training:Nokia SRC Exam Preparation
Nokia Quality of Service Official Course
Exam Registration:Pearson VUE Registration
Sample Questions:Nokia 4A0-107 Sample Questions
Exam Way:Online proctored or onsite at Pearson VUE test centers
Pre Condition:No mandatory prerequisites; recommended: NRS I certification or equivalent IP/MPLS networking knowledge
Official Syllabus URL:https://www.nokia.com/networks/training/src/exams/qos/

Nokia 4A0-107 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Hierarchical QoS (HQoS)20%- HQoS implementation on SAP and network interfaces
- Class Fair Hierarchical Policing (CFHP)
- Hierarchical scheduling architecture
Topic 2: Traffic Classification and Marking25%- Marking and remarking policies
- Classification at SAP-ingress and network-ingress
- Layer 2 CoS, Layer 3 DSCP, and Layer 4 parameters
Topic 3: Queuing, Policing and Shaping30%- Token bucket metering and policing
- Traffic shaping and Fair Information Rate (FIR)
- Queue types, scheduling and congestion management
Topic 4: Applied QoS and Troubleshooting10%- QoS for VPRN, VPLS and IES services
- Monitoring and verifying QoS policies
- Troubleshooting common QoS issues
Topic 5: Introduction to QoS15%- IntServ and DiffServ models
- Traffic characteristics and requirements
- QoS framework on Nokia 7750 SR

4A0-107 Exam FAQ: What Candidates Ask Most

The Nokia 4A0-107 exam, officially titled Nokia Quality of Service, is the required test for earning the Nokia Service Routing Architect (SRA) / Nokia Network Routing Specialist II (NRS II) certification, a credential at the Specialist / Professional level. Passing it validates the skills Nokia expects from certified professionals, and it can also support progress toward related credentials such as Nokia Service Routing Architect (SRA), Nokia Network Routing Specialist II (NRS II).

The 4A0-107 exam includes 40 questions, and you have 90 minutes to complete it. Before exam day, divide the available time by the question count so you know the pace you need to hold, and practice flagging time-consuming items for review instead of stalling on a single question. Timed sessions in the Actualtests4sure test engine are the easiest way to build that rhythm before it counts.

You need 57% (approx. 23/40) to pass the 4A0-107 exam, and the official registration fee is $125 USD. Keep in mind that a failed attempt means paying that fee in full again for a retake, so avoid booking your seat on a hunch. Work through the Actualtests4sure practice test until your scores sit comfortably above the passing requirement before you schedule the exam.

Nokia asks candidates to meet the following requirement before registering: No mandatory prerequisites; recommended: NRS I certification or equivalent IP/MPLS networking knowledge. Exam policies do change, so confirm the latest details on the official exam page at https://www.nokia.com/networks/training/src/exams/qos/ before you book.

You can book your seat through the official registration channels below:

The 4A0-107 exam is delivered in the following format: Online proctored or onsite at Pearson VUE test centers.

Nokia recommends the following official training for this exam:

A course builds the theory; practice turns it into exam-day performance. Once you finish a class, the 215 practice questions from Actualtests4sure show you how the same knowledge appears in exam-style items.

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The Nokia Quality of Service exam is organized into 5 major domains. Some of the key domains include:

  • Queuing, Policing and Shaping, accounting for 30% of the exam
  • Applied QoS and Troubleshooting, accounting for 10% of the exam
  • Hierarchical QoS (HQoS), accounting for 20% of the exam

Scroll up to the Exam Topics section for the complete breakdown, and use it to plan how much study time each domain deserves.

Nokia Quality of Service Sample Questions:

Question #1

Which of the following statements are TRUE when discussing self-generated traffic QoS? (Choose two)

  • A. DSCP bits can be set per application, per routing instance.
  • B. The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.
  • C. The DSCP marking stays nc1 for all applications. Only the internal FC is manipulated across different applications.
  • D. In order to mark Layer 2 self-generated traffic, network interfaces must be set to dot1Q.
  • E. In order to mark Layer 2 traffic, sgt-qos will set various ToS bits.
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

Question #2

To manage the shared buffer space at network ports, slope policies are applied on _________ for the ingress direction, and on ________ or _________ for the egress direction.

  • A. Interfaces, ports, SAPs
  • B. MDAs, ports, interfaces
  • C. Interfaces, interfaces. MDAs
  • D. Ports, ports, MDAs
  • E. MDAs, MDAs, ports
Reveal Solution  Discussion  0

Correct Answer: E  🗳️

Question #3

Which of the following criteria is an IP multi-field classification option?

  • A. src-ip
  • B. lsp-exp
  • C. prec
  • D. do1p
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #4

Which of the following statements regarding scheduling on the Nokia 7750 SR is TRUE? (Choose two)

  • A. Packets scheduled out of high-priority queues in the default scheduler will have a lower chance of packet loss at the expense of incurring a higher probability of delay.
  • B. When using priority-mode queues, traffic that is marked as in-profile on ingress and scheduled in the above-CIR loop will be considered as in-profile at egress.
  • C. When an HQoS strategy using an egress port-scheduler has been deployed, Tier 1 receives its scheduling rates based on the amount of egress bandwidth available for each forwarding class.
  • D. The greater the difference between PIR and CIR rates in a queue, the less likely a CIR will be provided.
  • E. When using profile-mode queues, traffic that is marked as in-profile on ingress and scheduled in the above-CIR loop will still be considered as in-profile at egress.
Reveal Solution  Discussion  0

Correct Answer: D,E  🗳️

Question #5

Packets enter the network via the ePipe SAP on PE1 with dot1p marking of 6. The VC type of the SDP interconnecting PE1 and PE2 is vlan. All network interfaces use the default network QoS policy. According to the configuration shown above, what is the inner dot1p value of the BE traffic egressing router PE2?

  • A. 0
  • B. 22
  • C. 3
  • D. 6
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

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