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Nokia 4A0-D03 Exam Syllabus Topics:

Nokia SR Linux EVPN and Data Center Interconnect Sample Questions:

Question 1

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 advertises the IMET route in a BGP EVPN update directly to Leaf-2 and Leaf-3.
B. Leaf-2 and Leaf-3 auto-discover the new peer based on the route target in the received IMET route.
C. Leaf-1 generates an IMET route.
D. Leaf-2 and Leaf-3 add Leaf-1 to their existing flooding list for BUM traffic.

Question 2

Which of the following statements about MAC mobility is TRUE?

A. A PE advertising a local MAC that was previously learned through EVPN, will decrement the sequence number in its update.
B. The original PE advertises the locally learned MAC with the sequence number set to a maximum value.
C. The originating PE and the destination PE must synchronize their MAC tables.
D. The originating PE generates a withdraw message after the same locally learned MAC has aged out.

Question 3

An IRB sub-interface that is being used to interconnect a MAC-VRF to an IP-VRF, is configured with anycast-gw set to true and anycast-gw enabled.
Which of the following statements is FALSE?

A. The host IP address of the sub-interface appears in the IP-VRF route table along with the prefix for the entire sub-net.
B. The last octet of the default virtual MAC assigned to the sub-interface is derived from the last octet of the chassis MAC.
C. The same IP address used on this sub-interface can be used by other IRB sub-interfaces on remote PEs participating in the IP-VRF.
D. Two MAC addresses associated to the sub-interface are shown in the forwarding table of the MAC-VRF that contains the IRB sub-interface.

Question 4

Consider the exhibit.

The two MAC-VRFs are inter-connected using IP-VRF3 which is to be deployed using asymmetric routing.
Which of the following statements is FALSE?

A. Leaf-1 and Leaf-2 will advertise host MAC/IP address information using EVPN route-type 2.
B. MAC-VRF1 and MAC-VRF2 will connect to IP-VRF3 using an IRB interface.
C. Leaf-1 and Leaf-2 must both have instances of MAC-VRF1 and MAC-VRF2.
D. Leaf-1 and Leaf-2 will advertise the IP prefixes to each other using EVPN route-type 5.

Question 5

Leaf routers are configured to support Layer 2 multi-homing all-active mode.
Which of the following statements is FALSE?

A. If using LACP, the system-id-mac must uniquely identify each leaf router connected to the host.
B. The LAG interface must then be associated with the Ethernet segment.
C. A LAG must be configured on the participating leaf routers.
D. If VLAN tagging is to be used, then it must be enabled on the LAG interface.

Solutions: