Latest [Sep 18, 2026] 4A0-D03 Exam with Accurate Nokia SR Linux EVPN and Data Center Interconnect PDF Questions [Q18-Q39]

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Latest [Sep 18, 2026] 4A0-D03 Exam with Accurate Nokia SR Linux EVPN and Data Center Interconnect PDF Questions

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Nokia 4A0-D03 Exam Syllabus Topics:

Section	Objectives
EVPN and VXLAN Data Center Fabric	– VXLAN data plane and encapsulation – EVPN route types and MAC/IP advertisement – EVPN control plane fundamentals
SR Linux Architecture and Fundamentals	– SR Linux system architecture and components – Configuration and operational models – Network operating system concepts and containerized routing functions
Operations, Troubleshooting and Best Practices	– Troubleshooting BGP EVPN and VXLAN issues – Network optimization and scaling considerations – Monitoring SR Linux and EVPN environments
BGP and Routing in Data Center Environments	– BGP EVPN address families – Interoperability between routing domains – Route reflection and scaling design
Data Center Interconnect (DCI)	– L2 and L3 DCI design patterns – Redundancy and high availability strategies – EVPN-based interconnect solutions

NO.18 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.

NO.19 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.

NO.20 Which of the following statements about utilizing VXLAN for the data plane in the data center is FALSE?

It allows the creation of a Layer 2 overlay network that can span the entire data center.

VXLAN was developed to support EVPN networks in the data center.

It may use ECMP to provide efficient utilization of the underlay interfaces within the data center.

It has the capability to isolate up to 16 million different overlays.

NO.21 Which of the following statements about PE-CE routing is FALSE?

There are two methods to implement routing between the PE and CE, static and dynamic.

BGP is the preferred option for PE-CE routing as it scales better than static routing.

eBGP is preferred which means that the PE and CE are required to be in different autonomous systems.

The CE advertises BGP EVPN route type 5 updates to the PE and the PE forwards to other PEs.

NO.22 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.

NO.23 Which of the following statements about the configuration of a Layer 3 multi-homing with a centralized router is FALSE?

The centralized router must be a member of the Ethernet segment.

All routers participating in the Ethernet segment must have the multi-homing mode set to all-active.

Remote leaf routers can load balance traffic to customer prefixes through the leaf routers connected to the Ethernet segment.

The centralized router will advertise the customer prefixes using an EVPN route-type 5 update.

NO.24 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.

NO.25 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?

Leaf-1 and Leaf-2 will advertise the IP prefixes to each other using EVPN route-type 5.

Leaf-1 and Leaf-2 must both have instances of MAC-VRF1 and MAC-VRF2.

Leaf-1 and Leaf-2 will advertise host MAC/IP address information using EVPN route-type 2.

MAC-VRF1 and MAC-VRF2 will connect to IP-VRF3 using an IRB interface.

NO.26 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.

NO.27 Consider the exhibit.

Which of the following statements about the operation of all-active multi-homing is FALSE?

Both Leaf1 and Leaf2 can forward BUM traffic to the host.

Leaf3 can load balance traffic between Leaf1 and Leaf2 when ECMP is enabled on the MAC-VRF.

The Ethernet segment on Leaf1 and Leaf2 is associated to lag 1.

The host can forward BUM traffic to either Leaf1 or Leaf2.

NO.28 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?

Anycast gateway is an optional configuration on the Leaf1 and Leaf2 IRB interfaces.

The IRB interfaces on Leaf1 and Leaf2 must be configured to advertise learned local host-routes.

MAC-VRF100 on Leaf1 and Leaf2 must have BGP EVPN and BGP VPN configured.

IP-VRF1 on Leaf1, Leaf2 and Leaf3 must be configured with a VXLAN-routed interface.

NO.29 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.

NO.30 Consider the exhibit.

Leaf1 and Leaf2 have the Ethernet segment configured to use the default election algorithm while Leaf3 and Leaf4 are configured to use the preference-based algorithm with Leaf3 having the higher preference value. The DF candidate list is the same on all leaf routers.
Which of the following leafs is the DF for mac-vrf103?

Leaf1

Leaf2

Leaf3

Leaf4

NO.31 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.

NO.32 Which of the following statements about the gateway-less data center interconnect solution is FALSE?

The IP addresses of the leaf routers need to be re-distributed into the WAN.

The EVPN overlay is transparently carried over the WAN network.

The leaf routers are able to establish a full mesh of VXLAN tunnels across the WAN.

The data center gateway routers maintain a MP-BGP EVPN peering with the data center route reflector.

NO.33 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.

NO.34 Consider the exhibit.

All IP-VRFs are configured properly and are operational.
Which of the following statements is FALSE?

One of the connected leaf routers will be elected DF.

The elected DF will use the AD per EVI update to identify itself as primary.

Only the elected DF will advertise the customer IP prefix route to the BGP route reflector.

All connected leaf routers will use an AD per ES update to advertise single-active redundancy.

NO.35 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.

NO.36 Which of the following is always found in an extended community associated with an EVPN update?

The route target

The AFI/SAFI

The VXLAN network ID

The EVPN route type

NO.37 Which of the following statements about utilizing asymmetric routing in an L3 EVPN network is FALSE?

If a host interface’s has two IP addresses, it must send out two separate EVPN route-type 2 updates for the MAC-VRF.

Each PE must have a full ARP table for all of the hosts in the L3 EVPN network.

All the MAC-VRFs connected to the L3 EVPN network must exist on each PE.

The ingress and egress PE routers will perform both MAC and IP forwarding.

NO.38 Which of the following EVPN route-types is used to implement aliasing?

Ethernet segment routes

AD per ES routes

AD per EVI routes

IP/MAC routes

NO.39 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

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Nokia 4A0-D03 Exam Syllabus Topics:

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