[Oct 08, 2026] Get Latest and 100% Accurate 4A0-D03 Exam Questions [Q14-Q30]

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[Oct 08, 2026] Get Latest and 100% Accurate 4A0-D03 Exam Questions

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Nokia 4A0-D03 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Layer 3 EVPN Services	25%	– EVPN Route Type 5 – VRF integration and route targets – Symmetric and asymmetric routing
Topic 2: Data Center Interconnect (DCI) Solutions	25%	– Interoperability with Nokia 7750 SR – BGP route policies and route reflectors – Gateway-less EVPN DCI
Topic 3: Layer 2 EVPN Services	25%	– EVPN Route Types 1–4 – Multi-homing and Ethernet Segments – Anycast Gateway and IRB
Topic 4: SR Linux and EVPN Fundamentals	25%	– EVPN control plane and MP-BGP – SR Linux architecture and CLI – VXLAN encapsulation and underlay

QUESTION 14
Consider the exhibit.

Leaf-1 has received an ARP request from host-1 for host-2. Leaf-1 has added host-1’s MAC address in its MAC table and host-1’s MAC/IP addresses in its proxy-ARP table.
Which of the following steps is FALSE?

Leaf-1 sends a route-type 2 EVPN update with host-1’s MAC with the IP address set to 0.0.0.0 to the remote peers.

Leaf-1 sends a route-type 2 EVPN update with host-1’s MAC with the IP address set to 192.168.100.1 to the remote peers.

The remote peers ignore the EVPN update with the IP address set to 0.0.0.0 and use the update with the IP address set to 192.168.100.1 to populate their MAC forwarding tables.

The remote peers generate a gratuitous ARP towards their directly connected hosts to announce the learned IP/MAC mapping information.

QUESTION 15
Which of the following statements about a distributed Layer 2 EVPN is FALSE?

When a host connected to a Layer 2 EVPN responds to an ARP request, it sends an ARP reply to the local leaf.

The local leaf replicates the ARP reply and sends it to all the leafs in the flooding list for that Layer 2 EVPN.

The local leaf learns the source MAC address from the Ethernet frame and populates it into its MAC forwarding table.

The local leaf generates an EVPN route type 2 and sends it to all of its configured BGP EVPN neighbors.

QUESTION 16
Which of the following statements about the decoupled gateway-based data center interconnect solution is FALSE?

VLAN tags are used to identify traffic between the data center border leaf and the WAN PE.

The EVPN services in the data center are interconnected to different VPN services in the WAN.

The separation between the border leaf and the WAN PE provides a clear demarcation for security and QoS.

The WAN PE maintains a peering session with the data center route-reflector for the exchange of updates.

QUESTION 17
Consider the exhibit.

Based upon the information in the screen captures, which of the following statements is FALSE?

Leaf-1 will not generate any EVPN route-type 5 updates for IP-VRF-100.

The IRB interface will snoop all ARP and GARP messages received on IRB sub-interface 100.100.

Leaf-1 will advertise EVPN route-type 2 updates with host IP and MAC information for MAC-VRF100.

The ARP cache for ip-vrf 100 is only required to contain host prefixes for the local subnets.

QUESTION 18
A host is connected to a MAC-VRF on leaf1 and leaf2. The MAC-VRF interfaces on leaf1 and leaf2 are associated to an Ethernet segment configured for active-standby multi-homing.
Which of the following statements is FALSE?

Leaf1 and leaf2 will hold an election to identify which leaf router will be the DF for the MAC-VRF.

Only the DF will accept traffic from the host.

The DF will forward all BUM traffic from the remote PEs to the host.

The non-DF is capable of forwarding unicast traffic from the remote PEs to the host.

QUESTION 19
Consider the exhibit.

Which of the following is NOT configured on dcgw10 to support the Layer 3 VPN connectivity?

The base BGP instance to support vpn-ipv4 and evpn address families.

A routed VXLAN interface for the VPRN instance.

A binding of the VPRN instance to the MPLS tunnels towards dcgw20.

A vrf-target matching the vrf-target on dcgw20 in the VPRN instance.

QUESTION 20
e-BGP is used as the routing protocol in the data center underlay.
When configuring the EVPN MP-BGP route reflector sessions, which of the following statements is FALSE?

The cluster-id that uniquely identifies the route reflector is only configured on the route reflector itself.

The leaf’s underlay autonomous system number is used for the route reflector EVPN peering sessions.

A second route reflector can be deployed for redundancy purposes.

If redundant route reflectors are deployed, the client leaf routers will receive duplicated updates.

QUESTION 21
Which of the following statements about configuring and using an integrated routing and bridging (IRB) interface is TRUE?

The IRB sub-interface must be configured as either type bridge or routed.

A MAC-VRF can be configured with multiple IRB sub-interfaces to support multi-homing.

When the IRB sub-interface is configured with multiple IP addresses, one of them can be configured as the primary.

When using an IRB interface to interconnect a MAC-VRF to an IP-VRF, one sub-interface is configured for the MAC-VRF and another one for the IP-VRF.

QUESTION 22
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?

Allows the other PEs to discover which PEs are connected to the same Ethernet segment.

Identifies the redundancy mode of the Ethernet segment.

Identifies the type of algorithm to be used in the election process.

Triggers the election of a designated forwarder.

QUESTION 23
Which of the following statements about the configuration of a distributed Layer 2 EVPN in a Nokia SR Linux is FALSE?

Each PE participating in the Layer 2 EVPN must be configured with the same EVPN instance ID (EVI).

The route distinguisher is auto-generated using the autonomous system number and EVI.

Only one VXLAN-interface can be associated to the Layer 2 EVPN.

The route-targets are manually configured when the leaf routers are in different autonomous systems.

QUESTION 24
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?

Allows the other PEs to discover which PEs are connected to the same Ethernet segment.

Triggers the election of a designated forwarder.

Identifies the type of algorithm to be used in the election process.

Identifies the redundancy mode of the Ethernet segment.

QUESTION 25
Consider the exhibit.

dcgw10 is a Nokia 7750SR and is used as the integrated gateway.
Which of the following is NOT configured in VPLS 100 on dcgw10?

The EVI to be used by the VPLS.

A VXLAN instance with the VNI for the VPLS.

A BGP instance with two unique route targets.

The BGP instance bound to the MPLS tunnels toward dcgw20.

QUESTION 26
Which of the following statements about EVPN PE-CE routing, using BGP as the routing protocol, is FALSE?

The PE advertises IPv4/IPv6 BGP updates to the CE based on the EVPN routes received from other PEs.

The PE advertises updates received from the CE as EVPN route type 5 updates to the other PEs.

iBGP is preferred between the CE and PE so that they will be in the same autonomous system.

The PE and CE can utilize import and export policies to control the updates that are sent and received.

QUESTION 27
Which of the following statements about an integrated routing and bridging (IRB) interface is FALSE?

An IRB interface is used to logically interconnect a MAC-VRF to an IP-VRF on a PE.

IP-VRFs and MAC-VRFs can have multiple IRB interfaces.

The IRB sub-interface must have at least one IP address.

The IRB sub-interfaces can be configured with access control lists.

QUESTION 28
Which of the following statements describes the function or operation of the integrated gateway-based data center interconnect solution?

All the data center leaf routers must be reachable over the WAN network.

The route reflectors in the different data centers must be able to reach each other.

The VXLAN tunnels are required between the leaf routers in the different data centers.

The data center gateway and the WAN PE functions are performed on a single router.

QUESTION 29
Which EVPN route-type (RT) is used in multi-homing scenarios to support aliasing and fast convergence?

RT-1 Ethernet Auto-Discovery

RT-2 MAC/IP Advertisement

RT-3 Inclusive Multicast Ethernet Tag

RT-4 Ethernet Segment

QUESTION 30
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?