Nokia Multicast Protocols (4A0-108) Practice Exam
The Nokia Multicast Protocols (4A0-108) exam validates a candidate’s expertise in designing, implementing, configuring, and troubleshooting multicast services in Nokia Service Router (SR) OS-based IP/MPLS networks. It covers both IPv4 and IPv6 multicast protocols, with a focus on deploying multicast in enterprise, service provider, and large-scale network environments.
This exam is part of the Nokia Service Routing Architect (SRA) certification track and tests the ability to handle multicast from foundational concepts to advanced deployment scenarios, including multicast over MPLS VPNs.
Who Should Take the Exam?
This exam is intended for:
- Network engineers and architects who design and deploy multicast-based services.
- Service provider engineers responsible for IPTV, live streaming, and large-scale content delivery.
- Enterprise network specialists implementing multicast in corporate or campus environments.
- Nokia IP/MPLS professionals aiming to complete requirements for the SRA certification.
- Professionals who want formal validation of their multicast configuration and troubleshooting skills on Nokia SR OS platforms.
Skills Measured
Candidates will be tested on the ability to:
- Understand multicast addressing and group management in IPv4/IPv6.
- Explain IGMP and MLD protocols and their operational differences.
- Configure and troubleshoot PIM Dense Mode (DM), Sparse Mode (SM), Source-Specific Multicast (SSM), and Bidirectional PIM.
- Implement Bootstrap Router (BSR) and Rendezvous Point (RP) configuration and redundancy.
- Configure multicast in Layer 3 VPNs (mVPNs).
- Understand and deploy Rosen Draft (Draft-Rosen) and NG-mVPN models.
- Apply filtering and policy controls for multicast distribution.
- Optimize multicast traffic flow and prevent loops.
- Perform multicast troubleshooting using Nokia SR OS CLI tools and commands.
Prerequisites
While there is no formal prerequisite to sit for the 4A0-108 exam, Nokia strongly recommends that candidates have:
- Completed Nokia Service Routing Protocols (4A0-101) or possess equivalent knowledge.
- Practical experience with Nokia SR OS in a lab or production environment.
- A solid understanding of IP routing fundamentals (OSPF, IS-IS, BGP).
- Familiarity with Layer 2/Layer 3 VPN concepts and MPLS basics.
- Prior exposure to multicast fundamentals (helpful but not mandatory).
Exam Format
- Exam name: Nokia Multicast Protocols
- Exam number: 4A0-108
- Mandatory prerequisites: none
- Exam duration: 90 Minutes
- Exam appointment duration: 110 minutes
- Number of questions: 40
- Language: English
Course Outline
The exam covers the following topics:
Module 1 - Overview of IP Multicast Technology
- Multicast overview
- IPv4 multicast addressing
Module 2 - Intradomain Multicast Protocols
- Internet Group Management Protocol (IGMP)
- Configuring and monitoring IGMP
- Reducing multicast flooding in a Layer-2 broadcast domain with IGMP snooping
- Eliminating redundant IGMP control messages that reach the last-hop router with IGMP proxy
- Enabling IGMP snooping and IGMP proxy on a VPLS service
- Protocol Independent Multicast (PIM)
- Configuring and monitoring PIM in ASM mode
Module 3 - Multicast Resiliency and Policy
- Core network resiliency
- Redundant rendezvous points
- Incongruent unicast and multicast routing
- Multicast policy
Module 4 - Source Specific Multicast
- Protocol requirements to achieve source-specific multicast
- Configuring PIM and IGMP for SSM mode
Module 5 – Next-Generation Multicast VPN with P2MP MPLS Tunneling
- Virtual Private Routed Network (VPRN) basics
- VPRN basic configuration
- Modifying a VPRN to carry multicast traffic
- NG-MVPN using P2MP LDP tunnels to carry multicast traffic
- Configuration of NG-MVPN using P2MP LDP tunnels
- NG-MVPN using P2MP RSVP tunnels to carry multicast traffic
- Configuration of NG-MVPN using P2MP RSVP tunnels
- Global Table Multicast (GTM)
- GTM configuration
Module 6 - Next-Generation Multicast VPN with BIER Tunneling
- Introduction to Bit Index Explicit Replication (BIER)
- Link-state routing protocol extensions to support BIER
- Configuring IS-IS to support BIER
- Configuring OSPF to support BIER
- NG-MVPN using BIER tunnels to carry multicast traffic
- Configuration of NG-MVPN using P2MP BIER tunnels