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Nokia 4A0-D03 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| BGP and Routing in Data Center Environments | - Interoperability between routing domains - BGP EVPN address families - Route reflection and scaling design |
| EVPN and VXLAN Data Center Fabric | - VXLAN data plane and encapsulation - EVPN control plane fundamentals - EVPN route types and MAC/IP advertisement |
| Operations, Troubleshooting and Best Practices | - Troubleshooting BGP EVPN and VXLAN issues - Monitoring SR Linux and EVPN environments - Network optimization and scaling considerations |
| SR Linux Architecture and Fundamentals | - SR Linux system architecture and components - Configuration and operational models - Network operating system concepts and containerized routing functions |
| Data Center Interconnect (DCI) | - Redundancy and high availability strategies - EVPN-based interconnect solutions - L2 and L3 DCI design patterns |
Nokia SR Linux EVPN and Data Center Interconnect Sample Questions:
1. Which of the following statements about a distributed Layer 2 EVPN is FALSE?
A) The local leaf learns the source MAC address from the Ethernet frame and populates it into its MAC forwarding table.
B) The local leaf replicates the ARP reply and sends it to all the leafs in the flooding list for that Layer 2 EVPN.
C) When a host connected to a Layer 2 EVPN responds to an ARP request, it sends an ARP reply to the local leaf.
D) The local leaf generates an EVPN route type 2 and sends it to all of its configured BGP EVPN neighbors.
2. Consider the exhibit.
Which of the following is NOT configured on dcgw10 to support the Layer 3 VPN connectivity?
A) The base BGP instance to support vpn-ipv4 and evpn address families.
B) A routed VXLAN interface for the VPRN instance.
C) A vrf-target matching the vrf-target on dcgw20 in the VPRN instance.
D) A binding of the VPRN instance to the MPLS tunnels towards dcgw20.
3. Which of the following statements describes the function or operation of the integrated gateway-based data center interconnect solution?
A) All the data center leaf routers must be reachable over the WAN network.
B) The route reflectors in the different data centers must be able to reach each other.
C) The data center gateway and the WAN PE functions are performed on a single router.
D) The VXLAN tunnels are required between the leaf routers in the different data centers.
4. Consider the exhibit.
All three leafs have an EVPN MP-BGP session with the route reflector in Spine-1. Leaf-2 and Leaf-3 have existing instances of an L2 EVPN named MAC VRF-1. Leaf-1 has just enabled a new instance of MAC VRF-1.
Which of the following steps is NOT taken when this new instance is enabled?
A) Leaf-1 generates an IMET route.
B) Leaf-2 and Leaf-3 add Leaf-1 to their existing flooding list for BUM traffic.
C) Leaf-2 and Leaf-3 auto-discover the new peer based on the route target in the received IMET route.
D) Leaf-1 advertises the IMET route in a BGP EVPN update directly to Leaf-2 and Leaf-3.
5. Which of the following EVPN route-types is used to implement aliasing?
A) AD per ES routes
B) IP/MAC routes
C) AD per EVI routes
D) Ethernet segment routes
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: C |

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