Expected 4A0-105 Exam Topics, as suggested by Nokia :

• Module 1: Explain the concept of a hierarchical VPLS and its benefits for large VPLS networks/ Describe the advantages of a VPLS and configure a VPLS service
• Module 2: Describe the use of active and standby pseudowires to achieve redundancy instead of STP/ Describe the VPLS FDB and list the tools required to maintain the VPLS FDB
• Module 3: Describe the use of LAG and MC-LAG in providing resiliency in a VPLS configuration/ Using the basic components of services (SAPs and SDPs), create a simple VPLS
• Module 4: Explain the key scalability concerns in large VPLS deployments/ Review Ethernet technology, MPLS features and the terminology of SAPs and SDPs in services
• Module 5: Define management VPLS (M-VPLS) and how it can be used with STP to provide redundancy and load balancing/ Manage a VPLS infrastructure, and troubleshoot and repair a misconfigured VPLS
• Module 6: Implement loop control mechanisms such as rapid spanning tree in a VPLS environment/ Explain the impacts of MTU on a distributed VPLS service