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Exam Information
Official specifications published by Alcatel-Lucent
Exam Format
90 min
40
80%
Professional
Registration
$125 USD
Pearson VUE or online proctoring
English
Validity
3 years
Pass the current version of the exam before expiration; Earn sufficient Continuing Education credits; Pass a higher-level Nokia certification exam
4A0-107 Exam Topics and Domains
4A0-107 is organized into 5 weighted domains. Expect to work with VPLS, VPRN, IES (Internet Enhanced Service), VPWS, and more.
1
Introduction to QoS
15%
Traffic Characteristics and Requirements
Traffic patterns and application requirementsBusiness drivers for QoS implementation
- List the business drivers for QoS
- Understand the key QoS performance metrics
- Explain the need for differentiated services
The QoS Mission Statement and Models
IntServ and DiffServ QoS ModelsRate limiting of customer traffic
- Understand IntServ and DiffServ QoS models
- Explain rate limiting concepts
- Describe QoS implementation on Nokia 7750 SR
QoS on the Nokia 7750 SR
Platform architecture for QoS
- Describe QoS architecture on Nokia 7750 SR
- Identify hardware components involved in QoS
- Understand parallelization benefits
2
Traffic Classification
20%
QoS-Related Packet Header Fields
Layer 2 classification fieldsLayer 3 classification fieldsMPLS classification fields
- Describe traffic classification as it pertains to QoS
- List criteria for classifying and marking packets
- Configure classification policies on Nokia 7750 SR
Configuration of Traffic Classification on SAP-Ingress
SAP ingress classification configurationPrecedence for different SAP-Ingress classification match criteria
- Configure SAP ingress classification
- Understand classification precedence
- Apply classification policies to services
Configuration of Traffic Classification on Network Ingress
Network ingress classification configurationPrecedence of different network classification match criteria
- Configure network ingress classification
- Apply network QoS policies
- Understand default network policy
Egress Traffic Classification
Egress classification and remarking
- Configure egress classification
- Implement remarking policies
- Ensure end-to-end QoS consistency
3
Queues and Policers
25%
Traffic Metering Using Token Buckets
Token bucket algorithm
- Explain token bucket algorithm
- Understand metering mechanisms
- Calculate token bucket parameters
Using Queues as Shapers
Queue-based shapingDefault SchedulerUsing Fair Information Rate (FIR)
- State the purpose of queuing and scheduling parameters
- Configure queue parameters on Nokia 7750 SR
- Implement shaping using queues
Creating Queues and Directing Traffic
SAP ingress and egress queuesNetwork interface queues
- Create and configure queues
- Direct traffic to appropriate queues
- Apply queue policies to SAPs and network interfaces
Priority Mode Queues vs Profile Mode Queues
Queue modes
- Differentiate priority mode and profile mode
- Configure appropriate queue mode for scenarios
- Understand HPO behavior
Using Policers
Policer configuration and operationCreating policers on SAP ingress and egressPolicer in Profile Capped Mode
- Configure policers on SAPs
- Understand policer operation
- Implement rate limiting using policers
Buffer Pool Allocation
SAP and Network Queues vs Hardware QueuesBuffer pool configuration
- Configure buffer pool allocation
- Understand buffer management
- Optimize buffer usage
Weighted Random Early Discard (WRED)
WRED principles and configurationSlope Policies
- State the purpose of WRED
- Configure WRED policies
- Apply slope policies to queues
Queue Groups and Traffic Redirection
Creating Queue GroupsRedirecting traffic to Queue Groups
- Create and configure queue groups
- Redirect traffic to queue groups
- Implement advanced queuing scenarios
4
Hierarchical Bandwidth Allocation
15%
Introduction to Hierarchical QoS
Hierarchical QoS concepts
- Understand hierarchical QoS principles
- Identify use cases for HQoS
- Design multi-tier QoS architectures
Class Fair Hierarchical Policing (CFHP)
Enabling CFHP for SAP PolicersEnabling CFHP for Queue-Group Policers
- Configure CFHP for SAP policers
- Configure CFHP for queue-group policers
- Understand hierarchical policing operation
Hierarchical Scheduling (H-QoS)
Enabling H-QoS for SAP Queues and PolicersEnabling H-QoS for Queue Groups
- Configure H-QoS for SAP queues and policers
- Configure H-QoS for queue groups
- Implement hierarchical scheduling architectures
Egress Port Scheduling
Enabling Egress Port Scheduling for Standalone SAP Queues and PolicersEnabling Egress Port Scheduling with H-QoSEnabling Egress Port Scheduling for Network QueuesEnabling Egress Port Scheduling for Queue Groups
- Configure egress port scheduling for various queue types
- Combine H-QoS with port scheduling
- Design complete hierarchical QoS solutions
5
Marking and Remarking
10%
Introduction to Marking
Marking principles
- Understand the purpose of marking
- Define appropriate trust boundaries
- Ensure end-to-end QoS consistency
Marking and Remarking of Encapsulated Packets
Encapsulation header marking
- Configure marking for encapsulated packets
- Map QoS markings between layers
- Preserve QoS through tunnels
Marking and Remarking of Customer Packet Headers
Layer 2 service markingVPRN service markingIES service marking
- Configure customer packet header marking
- Apply marking policies to different service types
- Ensure proper QoS treatment across service boundaries
How do I earn this certification?
Passing 4A0-107 earns the Nokia Service Routing Architect (SRA) certification. It sits in the Service Routing track.
Current Level Exams
- 4A0-102 - Nokia Border Gateway Protocol Fundamentals
- 4A0-103 - Nokia Multiprotocol Label Switching
- 4A0-104 - Nokia Services Architecture
- 4A0-105 - Nokia Virtual Private LAN Services
- 4A0-106 - Nokia Virtual Private Routed Networks
- 4A0-108 - Nokia Multicast Protocols
- 4A0-109 - Nokia Triple Play Services
- 4A0-110 - Nokia Advanced Troubleshooting
Next Level Options
NRS II - Nokia Network Routing Specialist II Advanced routing specialist certification
Alternative Paths
- 4A0-110 - Nokia Advanced Troubleshooting Complementary troubleshooting skills for QoS implementations
- 4A0-108 - Nokia Multicast ProtocolsQoS for multicast traffic is a common requirement
- 4A0-109 - Nokia Triple Play Services Triple play services require advanced QoS implementations
Practice with Precision
The PlanetCert Simulator mirrors the real exam environment with authentic questions and timed pressure.
How to study for this exam?
Use the official PlanetCert Practice Test alongside the study plan below to prepare efficiently for 4A0-107.
What's changed on this exam?
Current Status
- ACTIVE
- Last content update: 2024-08-15
Updates
- Model-Driven CLI (MD-CLI) Current All exam scenarios now use MD-CLI exclusively - classic CLI is no longer used • Release date: 2020-01-01
- SR OS Release 20.10 20.10.R1 Current exam content reflects SR OS 20.10 features and capabilities • Release date: 2023-10-01
- Hierarchical QoS (H-QoS) Enhanced Increased focus on hierarchical QoS architectures in recent exam versions • Release date: Ongoing
- Queue Groups Current Queue group configuration and traffic redirection are tested topics • Release date: SR OS 12.0+
Who should take this exam?
This exam is typically taken by Network Engineers and Network Designers.
- Exam Code: 4A0-103; Exam Name: Nokia Multiprotocol Label Switching; Reason: MPLS knowledge required for QoS in MPLS networks
- Exam Code: 4A0-104; Exam Name: Nokia Services Architecture; Reason: Understanding of Nokia service architecture is essential