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Nokia 4A0-D03 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| SR Linux and EVPN Fundamentals | 25% | - VXLAN encapsulation and underlay - EVPN control plane and MP-BGP - SR Linux architecture and CLI |
| Data Center Interconnect (DCI) Solutions | 25% | - Gateway-less EVPN DCI - BGP route policies and route reflectors - Interoperability with Nokia 7750 SR |
| Layer 2 EVPN Services | 25% | - Anycast Gateway and IRB - EVPN Route Types 1–4 - Multi-homing and Ethernet Segments |
| Layer 3 EVPN Services | 25% | - VRF integration and route targets - EVPN Route Type 5 - Symmetric and asymmetric routing |
Nokia SR Linux EVPN and Data Center Interconnect Sample Questions:
1. Which of the following statements about the gateway-less data center interconnect solution is FALSE?
A) All of the data centers leaf routers must be reachable over the WAN network.
B) It provides a clear demarcation for security between the border leaf and gateway.
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.
2. Consider the exhibit.
All three of the leafs have a MP-BGP EVPN session to the route-reflector Spine-1. Leaf-1, Leaf-2 and Leaf-3 have existing instances of an L2 EVPN named MAC VRF-1. Host-1 has just sent its first Ethernet frame into MAC VRF-1 on Leaf-1.
Which of the following steps is FALSE?
A) Leaf-2 and Leaf-3 import the EVPN update based upon the route target.
B) The route-reflector forwards the EVPN update to Leaf-2 and Leaf-3.
C) Leaf-1 populates Host-1's MAC address learnt on the local interface to its MAC table.
D) Leaf-1 generates an EVPN route-type 5 update with Host-1's MAC address and sends it to the route reflector.
3. Consider the exhibit.
Based upon the information in the screen captures, which of the following statements is FALSE?
A) The ARP cache for ip-vrf 100 is only required to contain host prefixes for the local subnets.
B) Leaf-1 will advertise EVPN route-type 2 updates with host IP and MAC information for MAC-VRF100.
C) Leaf-1 will not generate any EVPN route-type 5 updates for IP-VRF-100.
D) The IRB interface will snoop all ARP and GARP messages received on IRB sub-interface 100.100.
4. Which of the following statements about the configuration of a Layer 3 multi-homing with a centralized router is FALSE?
A) All routers participating in the Ethernet segment must have the multi-homing mode set to all-active.
B) Remote leaf routers can load balance traffic to customer prefixes through the leaf routers connected to the Ethernet segment.
C) The centralized router will advertise the customer prefixes using an EVPN route-type 5 update.
D) The centralized router must be a member of the Ethernet segment.
5. Which of the following EVPN route-types is used to implement aliasing?
A) IP/MAC routes
B) Ethernet segment routes
C) AD per ES routes
D) AD per EVI routes
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: D | Question # 4 Answer: A | Question # 5 Answer: D |
