Jul-2026 New Version 4A0-D01 Certificate & Helpful Exam Dumps is Online
4A0-D01 Free Certification Exam Material with 37 Q&As
NEW QUESTION # 17
Which of the following is NOT one of the characteristics of Nokia's SR Linux?
- A. It uses mature and stable SNMP protocol to access the command line interface.
- B. It uses an unmodified Linux kernel that simplifies the use of third party applications.
- C. It uses a modular, state-driven architecture that gives applications efficient access to system information.
- D. It includes a NetOgs development kit that supports the integration of third-party applications.
Answer: A
Explanation:
Nokia's SR Linux does not rely on the SNMP protocol for accessing the command line interface; instead, it uses modern, programmable interfaces aligned with its modular architecture.
NEW QUESTION # 18
Which of the following statements about using BFD with BGP is FALSE?
- A. It can help rapidly detect link failures.
- B. The BFD endpoints agree on the send/receive rate of control packets.
- C. BGP is notified if several BFD control packets are missed.
- D. Using BFD can speed up the BGP advertisement interval.
Answer: D
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 # 19
Which of the following statements about the CLI modes in Nokia's SR Linux is FALSE?
- A. Users can switch from one mode to another using the enter command.
- B. The running mode is used to make configuration changes.
- C. The show mode uses pre-defined reports to display operational information.
- D. The state mode displays the current configuration and operational information.
Answer: A
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 # 20
How are LLDP frames advertised between two Nokia SR Linux routers?
- A. They are forwarded to the destination node based on the MAC VRF table.
- B. They are routed to the destination node based on the IP VRF forwarding table.
- C. They are forwarded to the destination node based on the MAC VRF table.
- D. They are periodically flooded to the broadcast MAC address on each interface.
Answer: C
Explanation:
LLDP frames are periodically sent to a well-known multicast MAC address on each interface to discover directly connected devices.
NEW QUESTION # 21
Which of the following statements about Zero Touch Provisioning (ZTP) is FALSE?
- A. The ZTP process downloads a provisioning script defined in the TLS profile.
- B. ZTP allows a router to become operational in the network without any pre-provisioning.
- C. The ZTP process is managed by the ZTP application in Nokia SR Linux.
- D. The ZTP process relies on a DHCP server for an IP address.
Answer: A
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 # 22
Which of the following is NOT a valid logging source used in Nokia's SR Linux?
- A. SR Linux subsystem + priority
- B. Linux facility + priority
- C. Syslog filter
- D. Console
Answer: C
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 # 23
Which of the following statements about Nokia's SR Linux logging is FALSE?
- A. SR Linux logs are handled using facility Iocal6 of the native Linux syslog utility.
- B. SR Linux logs can be saved locally as an encrypted file.
- C. SR Linux supports the use of filters to select log messages.
- D. Logging parameter configuration is translated into the /etc/rsyslog.conf file.
Answer: B
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 # 24
Which of the following statements about next-hop groups is TRUE?
- A. A next-hop-group can only specify one next-hop for forwarding
- B. CMP destination unreachable message is always sent when blackhole is specified in the next-hop-group.
- C. Multiple static routes can use the same next-hop-group.
- D. The next-hop for a next-hop-group must be a local IP address.
Answer: C
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 # 25
Examine the exhibit. Which of the following statements is TRUE?
- A. A recursive lookup is performed to resolve 10.2.1.0 to use 10.1.1.0.
- B. A recursive lookup is performed to resolve 10.1.1.0 to use 10.2.1.0.
- C. The next-hop group for this static route is configured with two next-hops.
- D. The next-hop selected for this route will be based on the preference value configured for each next-hop.
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 # 26
Which of the following statements about the data center's leaf-spine topology (clos network) is FALSE?
- A. Each leaf router is connected to all the spine routers in the cluster.
- B. It provides a consistent path for east-west traffic.
- C. It uses the spanning tree protocol to avoid forwarding loops.
- D. It uses ECMP to distribute traffic across duplicate links.
Answer: C
Explanation:
The leaf-spine (Clos) topology does not use the spanning tree protocol because it relies on equal-cost multipath (ECMP) routing to prevent loops and efficiently utilize all available paths. Spanning tree is typically avoided in modern data center fabrics to enable full bandwidth utilization.
NEW QUESTION # 27
Which of the following is NOT part of Day 2+ operations with Nokia's Fabric Services System?
- A. Use the digital sandbox to test and validate configuration changes and upgrades.
- B. Monitor the data center fabric using model-driven telemetry.
- C. Analyze the overall health of the data center fabric for proactive operations.
- D. Use a fabric intent to build and validate design templates.
Answer: D
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 # 28
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. Type 4 Ethernet Segment (ES) EVPN route is used for designated forwarder (DF) election for an ES.
- C. The ES identifier (ESI) uniquely identifies an ES and it is locally significant for a particular leaf.
- D. Type 1 Ethernet Auto-Discovery (A-D) EVPN route is used to support EVPN multi-homing.
Answer: C
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 # 29
Which of the following Nokia's SR Linux ACLs is instantiated on all line cards to copy incoming packets to the CPM?
- A. Egress ACL
- B. Ingress ACL
- C. Capture-filter 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 # 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. Downloads and executes provisioning scripts
- B. Uses the Web or FTP server to provide the RPM packages and any necessary images
- C. Uses Nokia's Fabric Services System to deploy the digital sandbox automatically
- D. Uses the DHCP server to provide the IP address and default gateway
Answer: C
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
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. Preference value
- B. IPv4 destination prefix
- C. blackhole
- D. Next-hop group
Answer: C
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 # 32
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