[2026] New 4A0-D01 exam Free Sample Questions to Practice [Q13-Q37]

[2026] New 4A0-D01 exam Free Sample Questions to Practice

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Nokia 4A0-D01 Exam Syllabus Topics:

Topic	Details
Topic 1	This section of the exam measures skills of a Network Automation Specialist and introduces the principles of Event Driven Automation in SR Linux environments. It covers integration with Kubernetes and explores core use cases such as intent-based automation for fabrics and services, as well as enhanced network observability.
Topic 2	SR Linux User and System Management: This section of the exam measures skills of a Network Automation Specialist and includes managing user roles, TLS configurations for secure communication, and automation features like Zero-Touch Provisioning (ZTP). It covers ZTP setup, configuration processes, and common issues that may arise during deployment.
Topic 3	SR Linux Configuration and Routing: This section of the exam measures skills of a Network Automation Specialist and focuses on configuring and managing SR Linux systems. It examines the YANG-driven CLI, JSON output, environment variables, and static and dynamic routing. Learners also explore BGP, ECMP, IP-VRF, MAC-VRF, and the use of VXLAN with EVPN to implement both Layer 2 and Layer 3 overlays, including symmetric and asymmetric models.
Topic 4	SR Linux Logging, Monitoring, and Filtering: This section of the exam measures skills of a Data Center Network Engineer and addresses how to implement logging, monitoring, and traffic filtering in SR Linux. It explains log file usage, ACL types, CPM filtering, and packet capture filters. Configuration tasks involve applying ACLs and monitoring network activity using capture tools.

 

NEW QUESTION # 13
Which of the following statements about using BFD with BGP is FALSE?

• A. Using BFD can speed up the BGP advertisement interval.
• B. The BFD endpoints agree on the send/receive rate of control packets.
• C. It can help rapidly detect link failures.
• D. BGP is notified if several BFD control packets are missed.

Answer: A

Explanation:
BFD helps detect link failures rapidly and notifies BGP to trigger route updates quickly, but it does not speed up the BGP advertisement interval itself. BGP advertisement intervals are controlled by BGP timers, not by BFD.

NEW QUESTION # 14
Which of the following is NOT one of the reasons why BGP is used as the routing protocol in the data center?

• A. It supports both IPv4 and IPv6.
• B. It is a well understood and mature routing protocol.
• C. It is more efficient than link-state protocols like IS-IS and OSPF.
• D. BGP neighbors automatically discover each other.

Answer: C

Explanation:
BGP is not chosen because it is more efficient than link-state protocols; in fact, link-state protocols like IS-IS and OSPF generally provide faster convergence and more efficient route calculation. BGP is used in data centers mainly because it is mature, well understood, supports both IPv4 and IPv6, and offers flexible policy control.

NEW QUESTION # 15
Which of the following statements about a CPM-filter policer is FALSE?

• A. The system-cpu-policer is hardware-based.
• B. Hierarchical policing of control plane traffic is supported.
• C. The system-cpu-policer acts on the aggregate traffic from all line cards.
• D. CPM-filter entries can use both a distributed-policer and a system-cpu-policer.

Answer: A

Explanation:
The system-cpu-policer in Nokia SR Linux is software-based, not hardware-based. It acts on aggregate control plane traffic and supports hierarchical policing with CPM-filter entries using both distributed and system-cpu-policers.

NEW QUESTION # 16
Which of the following statements about SR Linux interfaces is FALSE?

• A. Network interfaces are associated with physical ports on the linecards.
• B. The loopback interface is a physical interface directly connected to another interface on the same chassis.
• C. Layer 2 parameters such as MTU are configured at the SR Linux interface level while Layer 3 parameters are configured at the subinterface level.
• D. Only one management interface is allowed.

Answer: B

Explanation:
The loopback interface in SR Linux is a logical, virtual interface used for management and routing purposes; it is not a physical interface directly connected to another interface on the same chassis.

NEW QUESTION # 17
Examine the exhibit. Which of the following statements is TRUE?

• A. The next-hop selected for this route will be based on the preference value configured for each next-hop.
• B. A recursive lookup is performed to resolve 10.2.1.0 to use 10.1.1.0.
• C. The next-hop group for this static route is configured with two next-hops.
• D. A recursive lookup is performed to resolve 10.1.1.0 to use 10.2.1.0.

Answer: C

Explanation:
The static route shows two next-hop IP addresses (10.1.1.0 and 10.2.1.0) listed, indicating that a next-hop group with multiple next-hops is configured for load balancing or redundancy.

NEW QUESTION # 18
A static route is configured in two steps in Nokia's SR Linux. Which of the following items CANNOT be configured in the static-routes container?

• A. Next-hop group
• B. Preference value
• C. IPv4 destination prefix
• D. blackhole

Answer: D

Explanation:
The static-routes container in Nokia SR Linux does not support configuring a blackhole route directly; it is used to configure destination prefixes, preference values, and next-hop groups for static routing.

NEW QUESTION # 19
Which of the following is NOT a valid logging source used in Nokia's SR Linux?

• A. Linux facility + priority
• B. Syslog filter
• C. Console
• D. SR Linux subsystem + priority

Answer: B

Explanation:
"Syslog filter" is not a logging source; it is a mechanism used to filter log messages. Valid logging sources in SR Linux include Linux facility + priority, console, and SR Linux subsystem + priority.

NEW QUESTION # 20
Which of the following statements about the VXLAN tunneling in data centers is FALSE?

• A. Each VXLAN tunnel endpoint is automatically assigned with a unique VNI value.
• B. EVPN routes are exchanged between VXLAN tunnel endpoints.
• C. VLXAN tunneling is used to provide Layer 2 connectivity between workloads over a common underlay network.
• D. VXLAN tunnel endpoints can be on hypervisors, leaf routers, or datacenter gateways.

Answer: A

Explanation:
VXLAN tunnel endpoints (VTEPs) are configured with VNI (VXLAN Network Identifier) values, but these VNIs are not automatically assigned; they must be explicitly configured to define Layer 2 segments.

NEW QUESTION # 21
Which of the following statements about Nokia's Fabric Services System is FALSE?

• A. Telemetry data is provided in a context that is relevant to the fabric intent.
• B. Cloud-native design enables easy integration with the customer's environment.
• C. Data center fabric configuration is represented as the fabric intent in a declarative YAML format.
• D. Digital sandbox provides notification of performance issues in the data center fabric.

Answer: D

Explanation:
The Digital Sandbox in Nokia's Fabric Services System is primarily used for simulation and validation of fabric intent, not for providing notifications of performance issues.

NEW QUESTION # 22
Which of the following is NOT one of the user types supported in Nokia SR Linux?

• A. Regular Linux OS users
• B. Remote users
• C. SR Linux users
• D. Container users

Answer: B

Explanation:
Nokia SR Linux supports SR Linux users, regular Linux OS users, and container users. "Remote users" is not a defined user type within SR Linux user management.

NEW QUESTION # 23
Which of the following Nokia's SR Linux ACLs is instantiated on all line cards to copy incoming packets to the CPM?

• A. Capture-filter ACL
• B. Ingress ACL
• C. Egress ACL
• D. CPM-filter ACL

Answer: D

Explanation:
The CPM-filter ACL is instantiated on all line cards in Nokia's SR Linux to copy incoming packets to the Control Plane Manager (CPM) for processing.

NEW QUESTION # 24
How are LLDP frames advertised between two Nokia SR Linux routers?

• A. They are routed to the destination node based on the IP VRF forwarding table.
• B. They are forwarded to the destination node based on the MAC VRF table.
• C. They are periodically flooded to the broadcast MAC address on each interface.
• D. They are forwarded to the destination node based on the MAC VRF table.

Answer: D

Explanation:
LLDP frames are periodically sent to a well-known multicast MAC address on each interface to discover directly connected devices.

NEW QUESTION # 25
Which of the following statements about IP-VRFs in Nokia's SR Linux is FALSE?

• A. An IP-VRF is a Layer 3 network instance.
• B. Multiple servers can be connected to the same subnet in an IP-VRF.
• C. The router maintains a distinct route table for each IP-VRF instance.
• D. Packets in an IP-VRF are forwarded based on the destination IP address.

Answer: B

Explanation:
Multiple servers connected to the same subnet typically reside within the same Layer 2 domain or MAC-VRF. IP-VRFs operate at Layer 3 and segment routing and forwarding by separate routing tables, so multiple servers on the same subnet are not a function of IP-VRF.

NEW QUESTION # 26
Which of the following is NOT a function of Nokia's SR Linux application manager?

• A. It translates the application's YANG model into protobufs for the IDB.
• B. It reads the application's configuration information and starts each application.
• C. It manages the SR Linux and customer-defined applications.
• D. It monitors the health of all applications.

Answer: A

Explanation:
The SR Linux application manager does not perform the function of translating an application's YANG model into protobufs for the Interface DataBase (IDB). Its primary roles are managing applications, reading their configuration, and monitoring their health.

NEW QUESTION # 27
Which of the following statements about multi-homing in EVPN is FALSE?

• A. The Ethernet Segment (ES) identifies a set of links that connects a host to one or more leafs.
• B. The ES identifier (ESI) uniquely identifies an ES and it is locally significant for a particular leaf.
• C. Type 1 Ethernet Auto-Discovery (A-D) EVPN route is used to support EVPN multi-homing.
• D. Type 4 Ethernet Segment (ES) EVPN route is used for designated forwarder (DF) election for an ES.

Answer: B

Explanation:
The Ethernet Segment Identifier (ESI) uniquely identifies an Ethernet Segment (ES) globally across the EVPN domain, not just locally for a particular leaf.

NEW QUESTION # 28
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