4A0-D01 Exam Info and Free Practice Test All-in-One Exam Guide Jan-2026
Pass Nokia 4A0-D01 Actual Free Exam Q&As Updated Dump Jan 24, 2026
Nokia 4A0-D01 Exam Syllabus Topics:
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NEW QUESTION # 16
Which of the following statements about Nokia's SR Linux logging is FALSE?
- A. Logging parameter configuration is translated into the /etc/rsyslog.conf file.
- B. SR Linux supports the use of filters to select log messages.
- C. SR Linux logs are handled using facility Iocal6 of the native Linux syslog utility.
- D. SR Linux logs can be saved locally as an encrypted file.
Answer: D
Explanation:
Nokia SR Linux does not natively support saving logs locally as encrypted files. Logs are managed using standard Linux syslog facilities and can be filtered, but encryption of local log files is not a built-in feature.
NEW QUESTION # 17
Examine the exhibit. What type of information is NOT included in the IMET route advertised by VTEP1?
- A. Flooding list
- B. Route distinguisher of VTEP1's MAC-VRF
- C. VXLAN network identifier (VNI)
- D. IP address of VTEP1
Answer: B
Explanation:
The IMET route includes the VNI, flooding list, and IP address of the originating VTEP, but it does not include the route distinguisher of the VTEP's MAC-VRF.
NEW QUESTION # 18
Which of the following statements about a MAC-VRF is FALSE?
- A. A MAC-VRF is a Layer 2 network instance.
- B. Packets received in a MAC-VRF are forwarded based on destination IP address.
- C. Multiple devices can be connected to the same IP subnet using a MAC-VRF.
- D. Bridge table entries contain an exit interface for each destination address.
Answer: B
Explanation:
In a MAC-VRF, packets are forwarded based on Layer 2 information such as destination MAC addresses, not on destination IP addresses.
NEW QUESTION # 19
Which of the following is NOT part of Day 2+ operations with Nokia's Fabric Services System?
- A. Use a fabric intent to build and validate design templates.
- B. Monitor the data center fabric using model-driven telemetry.
- C. Use the digital sandbox to test and validate configuration changes and upgrades.
- D. Analyze the overall health of the data center fabric for proactive operations.
Answer: A
Explanation:
Using a fabric intent to build and validate design templates is primarily a Day 0 or Day 1 activity focused on initial fabric deployment and design, not part of Day 2+ operational tasks like monitoring, health analysis, or change validation.
NEW QUESTION # 20
Which of the following statements about next-hop groups is TRUE?
- A. Multiple static routes can use the same next-hop-group.
- B. A next-hop-group can only specify one next-hop for forwarding
- C. The next-hop for a next-hop-group must be a local IP address.
- D. CMP destination unreachable message is always sent when blackhole is specified in the next-hop-group.
Answer: A
Explanation:
Multiple static routes can share the same next-hop group, enabling efficient reuse of next-hop definitions for load balancing or redundancy.
NEW QUESTION # 21
Which of the following statements about resilient ECMP load balancing is TRUE?
- A. Hash buckets are used to ensure that flows egressing the same interface on one router use different egress interfaces on downstream routers.
- B. When one of the next-hops fail, only flows currently egressing to that next-hop are impacted.
- C. The hash value used to distribute traffic is calculated as a modulo function on specific fields of the packet header.
- D. A different hash seed is used on downstream routers to ensure that flows are randomly distributed across all eligible router interfaces.
Answer: B
Explanation:
In resilient ECMP load balancing, when a next-hop fails, only the flows that were using that specific next-hop are affected and need to be redistributed, minimizing disruption to other flows.
NEW QUESTION # 22
Which of the following Nokia's SR Linux ACLs is instantiated on all line cards to copy incoming packets to the CPM?
- A. CPM-filter ACL
- B. Ingress ACL
- C. Capture-filter ACL
- D. Egress ACL
Answer: A
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 # 23
Which of the following statements about Zero Touch Provisioning (ZTP) is FALSE?
- A. The ZTP process is managed by the ZTP application in Nokia SR Linux.
- B. The ZTP process relies on a DHCP server for an IP address.
- C. ZTP allows a router to become operational in the network without any pre-provisioning.
- D. The ZTP process downloads a provisioning script defined in the TLS profile.
Answer: D
Explanation:
The ZTP process downloads a provisioning script typically from a defined URL or server, not from a TLS profile. The TLS profile is used for securing communications but does not define the provisioning script location.
NEW QUESTION # 24
Which of the following statements about the IRB subinterface configuration in Nokia SR Linux is FALSE?
- A. An IRB subinterface is configured in an IP-VRF network instance.
- B. One IRB subinterface is configured in a MAC-VRF network instance.
- C. An IP address is configured under the IRB's subinterface.
- D. One IRB subinterface is configured for each interface within a MAC-VRF network instance.
Answer: D
Explanation:
In Nokia SR Linux, IRB subinterfaces are configured one per MAC-VRF network instance, not one for each interface within that instance. Multiple IRB subinterfaces per interface are not typical.
NEW QUESTION # 25
Which of the following statements about the CLI modes in Nokia's SR Linux is FALSE?
- A. The running mode is used to make configuration changes.
- B. Users can switch from one mode to another using the enter command.
- C. The state mode displays the current configuration and operational information.
- D. The show mode uses pre-defined reports to display operational information.
Answer: B
Explanation:
In Nokia SR Linux, users switch between CLI modes using specific commands like configure or exit, not an enter command. The enter command is not used for mode switching.
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 monitors the health of all applications.
- C. It manages the SR Linux and customer-defined applications.
- D. It reads the application's configuration information and starts each application.
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 the YANG model used in Nokia's SR Linux is FALSE?
- A. The YANG model provides a standardized way for applications to retrieve SR Linux configuration and state information.
- B. The YANG model uses a tree structure with "leafs" as the branches and "containers" as the data components.
- C. All configuration and state information is defined as a YANG model.
- D. The YANG model can be converted into other formats such as JSON or XML.
Answer: B
Explanation:
In YANG models, "leafs" are the data nodes (not branches), and "containers" group related data nodes. The statement incorrectly reverses their roles by calling leafs branches and containers data components.
NEW QUESTION # 28
Based on the exhibit output, which of the following statements is TRUE?
- A. An ACL filter is configured to accept ICMP packets, which are then processed by the tcpdump-like utility.
- B. A cpm-filter policer is configured to rate limit ICMP packets, which are then captured in a log file.
- C. capture-filter is configured to copy ICMP packets to the CPM where they are processed by the tcpdump-like utility.
- D. A cpm-filter is configured to accept ICMP packets, which are then captured in a log file.
Answer: C
Explanation:
The exhibit shows ICMP packets being captured and displayed by a tcpdump-like utility, which indicates that a capture-filter is configured to copy ICMP packets to the Control Plane Manager (CPM) where they are processed and monitored.
NEW QUESTION # 29
Which of the following is NOT one of the reasons why BGP is used as the routing protocol in the data center?
- A. BGP neighbors automatically discover each other.
- B. It is more efficient than link-state protocols like IS-IS and OSPF.
- C. It is a well understood and mature routing protocol.
- D. It supports both IPv4 and IPv6.
Answer: B
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 # 30
When autoboot flag is set in grub.cfg, which of the following is NOT performed as part of the Zero Touch Provisioning (ZTP) autoboot process?
- A. Uses Nokia's Fabric Services System to deploy the digital sandbox automatically
- B. Uses the DHCP server to provide the IP address and default gateway
- C. Uses the Web or FTP server to provide the RPM packages and any necessary images
- D. Downloads and executes provisioning scripts
Answer: A
Explanation:
The ZTP autoboot process does not automatically use Nokia's Fabric Services System to deploy the digital sandbox; it focuses on network boot, DHCP IP assignment, and downloading/executing provisioning scripts from web or FTP servers.
NEW QUESTION # 31
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