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Nokia 4A0-D03 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Layer 3 EVPN Services | 25% | - VRF integration and route targets - EVPN Route Type 5 - Symmetric and asymmetric routing |
| SR Linux and EVPN Fundamentals | 25% | - VXLAN encapsulation and underlay - SR Linux architecture and CLI - EVPN control plane and MP-BGP |
| Data Center Interconnect (DCI) Solutions | 25% | - Interoperability with Nokia 7750 SR - BGP route policies and route reflectors - Gateway-less EVPN DCI |
| Layer 2 EVPN Services | 25% | - EVPN Route Types 1–4 - Multi-homing and Ethernet Segments - Anycast Gateway and IRB |
Nokia SR Linux EVPN and Data Center Interconnect Sample Questions:
Question 1
Which of the following statements about the gateway-less data center interconnect solution is FALSE?
A. It provides a clear demarcation for security between the border leaf and gateway.
B. All of the data centers leaf routers must be reachable over the WAN network.
C. The data center border leaf and gateway can use either eBGP or static routes to exchange routing information.
D. The route reflectors must be reachable between different data centers.
Question 2
Consider the exhibit.
Based upon the information in the screen captures, which of the following statements is FALSE?
A. Leaf-1 will advertise EVPN route-type 2 updates with host IP and MAC information for MAC-VRF100.
B. The IRB interface will snoop all ARP and GARP messages received on IRB sub-interface 100.100.
C. Leaf-1 will not generate any EVPN route-type 5 updates for IP-VRF-100.
D. The ARP cache for ip-vrf 100 is only required to contain host prefixes for the local subnets.
Question 3
Leaf routers are configured to support Layer 2 multi-homing all-active mode.
Which of the following statements is FALSE?
A. The multi-homing mode of all-active must be configured for the Ethernet segment.
B. The Ethernet segment must be administratively enabled.
C. All of the sub-interfaces of the LAG must be configured in the Ethernet segment.
D. The 2nd through 7th octets of the ESI must not be all zeros.
Question 4
A host is connected to multiple PEs through multi-homing.
Which of the following is NOT a function of the EVPN route-type 4 route?
A. Allows the other PEs to discover which PEs are connected to the same Ethernet segment.
B. Identifies the type of algorithm to be used in the election process.
C. Identifies the redundancy mode of the Ethernet segment.
D. Triggers the election of a designated forwarder.
Question 5
Which of the following statements about the decoupled gateway-based data center interconnect solution is TRUE?
A. The WAN PE maintains a peering session with the data center route reflector.
B. There is a clear demarcation for security and QoS between the data center border leaf and the WAN PE.
C. VXLAN tunnels are established between the leaf routers in the different data centers.
D. The IP addresses of all the leaf routers and route-reflectors must be reachable by the routers in the WAN.
Solutions:
| Question 1 Answer: A | Question 2 Answer: B | Question 3 Answer: D | Question 4 Answer: B | Question 5 Answer: B |




