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Nokia SRA Composite Exam

Exam Name:        Nokia SRA Composite Exam
Exam Number: 4A0-C02
Credit Towards Certifications:
Nokia Service Routing Architect (SRA) Certification
Mandatory Exam Prerequisites:
Exam Duration: 150 minutes
Exam Appointment Duration: 195 minutes. This is the exam duration plus a 45 minute tutorial on computer-based examinations.
Number of Questions: 80
Language: English

The SRA composite exam combines the four required individual exams for SRA certification into a single, integrated exam. The four individual exams are:

  • Nokia Border Gateway Protocol (Exam #4A0-102)
  • Nokia Virtual Private LAN Services (Exam #4A0-105)
  • Nokia Virtual Private Routed Networks (Exam #4A0-106)
  • Nokia Quality of Service (Exam #4A0-107)

Candidates will have the option to write the single SRA composite exam or write the four individual exams outlined above.

The SRA composite exam is also an optional exam for SRA recertification. There are also other optional exams to choose from for SRA recertification. A complete list of SRA recertification exam options are available at

The SRA composite exam covers topics from all four of the recommended prerequisite courses for SRA certification:

  • Nokia Border Gateway Protocol (Course #3FL30634AAAAZZZZA)
  • Nokia Virtual Private LAN Services (Course #3FL30637AAAAZZZZA)
  • Nokia Virtual Private Routed Networks (Course #3FL30638AAAAZZZZA)
  • Nokia Quality of Service (Course #3FL30639AAAAZZZZA)

The list below provides broad guidelines for the type of content that may be included in the exam. Other material not described here may be incorporated into the exam.

  • Describe the basic Internet Architecture and related elements
  • Describe the role of BGP in service provider networks
  • Demonstrate a sound understanding of BGP mechanics and the role of BGP attributes
  • Explain the interaction between BGP and interior gatewayprotocol (IGP)
  • Plan and implement a basic BGP network using Nokia SR OS
  • Successfully configure, monitor and troubleshoot a network of multiple BGP peers
  • Implement BGP policies in an Nokia environment
  • Verify and troubleshoot the results of the policies configurations
  • Scale iBGP by deploying confederations or route reflections
  • Configure and verify BGP confederations
  • Configure and verify BGP route reflections
  • Describe the effect of using advertise-external feature on BGP route propagation
  • Explain BGP add-paths feature
  • Describe the operation of BGP fast reroute
  • Configure and verify BGP advertise-external, add-paths, and FRR on Nokia SR
  • Review Ethernet technology, MPLS features and the terminology of SAPs and SDPs in services
  • Using the basic components of services (SAPs and SDPs), create a simple VPLS
  • Describe the advantages of a VPLS and configure a VPLS service
  • Explain the impacts of MTU on a distributed VPLS service
  • Describe the VPLS FDB and list the tools required to maintain the VPLS FDB
  • Manage a VPLS infrastructure, and troubleshoot and repair a misconfigured VPLS
  • Describe the purpose and operation of policy-based forwarding
  • Implement loop control mechanisms such as rapid spanning tree in a VPLS environment
  • Define management VPLS (M-VPLS) and how it can be used with STP to provide redundancy and load balancing
  • Describe the use of LAG and MC-LAG in providing resiliency in a VPLS configuration
  • Describe the use of active and standby pseudowires to achieve redundancy instead of STP
  • Explain the key scalability concerns in large VPLS deployments
  • Explain the concept of a hierarchical VPLS and its benefits for large VPLS networks
  • Explain the concept of PBB (provider backbone bridging) and how it resolves the problem of MAC explosion when connecting to multiple bridging sites
  • Describe the operation of the basic VPRN architecture
  • Explain how the VPRN routing information is distributed among Provider Edge (PE) routers, through the use of Multiprotocol BGP extensions
  • Identify the cause of BGP loops in a VPRN environment
  • Implement loop prevention in VPRN using multiple techniques
  • Configure, verify, and troubleshoot VPRN
  • Describe the operation of advanced VPRN topologies and services
  • Understand full, hub and spoke, and extranet VPRN topologies
  • Describe the operation of providing Internet access using various techniques
  • Understand the operation of Inter-AS VPRN model A, model B and model C
  • Configure, verify and troubleshoot Inter-AS VPRNs
  • Describe the carrier supporting carrier (CSC) VPN model
  • Understand the exchange of routes and the data path in CSC
  • Configure, verify and troubleshoot a CSC VPRN
  • List the business drivers for QoS
  • Describe traffic classification, queuing, scheduling, and marking as they pertain to QoS including, rate limiting, resource allocation and congestion management
  • Configure various QoS-related policies on the Nokia 7750 SR to provide differentiated services confirming to SLAs
  • List the criteria that can be used to classify and mark packets at service and network ingress/egress to support optimal use of networking resources
  • State the purpose of the queuing and scheduling parameters PIR, CIR, MBS, CBS, High Priority only, queue type, queue mode and adaptation rule
  • State the purpose of Weighted Random Early Detection (WRED) to increase average utilization of networking resources as they approach congestion
  • State the need for a multi-tiered scheduling (HQoS) architecture on SAP ingress and egress
  • Apply QoS concepts to the applicable service (virtual private wire service [VPWS], virtual private LAN service [VPLS], virtual private routed network [VPRN], or Internet enhanced service [IES])
  • Describe the need for egress port scheduling and its operation in conjunction with an HQoS scheduler
  • Explain how standalone policers enforce the configured rate, CIR, MBS, CBS and HPO to color packets
  • Explain how Class Fair Hierarchical Policing (CFHP ) supports four layers of hierarchy, and dynamically enforces rates, using the priority, and weights assigned to child policers and arbiters
  • Design, configure, apply, and predict the expected behavior of a CFHP policy
  • Explain Ethernet queue groups and how they are typically used on access ingress, access egress, network ingress, and network egress

Download the practice exam for Nokia SRA Composite

Exam exemptions are available for individuals with IP certifications from other organizations.  Refer to the following link for additional details: Credit for Other IP Certifications.

Price: $400 USD based on exam delivery in North America.   Pricing in other countries may vary slightly depending on country location.

Exams are delivered by our external test delivery partner, Pearson VUE. For more information, access their website at