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Nokia 4A0-D03 Exam Syllabus Topics:

Nokia SR Linux EVPN and Data Center Interconnect Sample Questions:

1. Consider the exhibit.

The network is configured for interface-less symmetric routing with an ECMP of 4 enabled on all leaf routers.
Which of the following statements is FALSE?

A) Anycast gateway is an optional configuration on the Leaf1 and Leaf2 IRB interfaces.
B) The IRB interfaces on Leaf1 and Leaf2 must be configured to advertise learned local host-routes.
C) IP-VRF1 on Leaf1, Leaf2 and Leaf3 must be configured with a VXLAN-routed interface.
D) MAC-VRF100 on Leaf1 and Leaf2 must have BGP EVPN and BGP VPN configured.

2. Consider the exhibit.

Host-2 is sending data to Host-1. The network is designed to use asymmetric routing.
Which of the following statements about the operation of the data plane is TRUE?

A) Leaf-1 forwards the data for mac-vrf-2 towards Leaf-2 with a VNI of 2.
B) Leaf-2 IP-VRF consults the ARP table to learn Host-1 MAC address.
C) Leaf-2 forwards the data for mac-vrf-2 towards the IP-VRF using its IRB interface.
D) Leaf-2 does a MAC look-up using mac-vrf-1 and forwards the data towards Host-1.

3. Which of the following statements about utilizing asymmetric routing in an L3 EVPN network is FALSE?

A) The egress PE performs MAC forwarding only.
B) Each MAC-VRF used in the L3 EVPN network must exist on each PE.
C) EVPN route-type 5 must be supported by the PEs involved.
D) The ingress PE performs both MAC and IP forwarding.

4. Which of the following statements about PE-CE routing is FALSE?

A) There are two methods to implement routing between the PE and CE, static and dynamic.
B) The CE advertises BGP EVPN route type 5 updates to the PE and the PE forwards to other PEs.
C) BGP is the preferred option for PE-CE routing as it scales better than static routing.
D) eBGP is preferred which means that the PE and CE are required to be in different autonomous systems.

5. 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-1 generates an EVPN route-type 5 update with Host-1's MAC address and sends it to the route reflector.
B) Leaf-2 and Leaf-3 import the EVPN update based upon the route target.
C) Leaf-1 populates Host-1's MAC address learnt on the local interface to its MAC table.
D) The route-reflector forwards the EVPN update to Leaf-2 and Leaf-3.

Solutions: