Updated Nokia 4A0-D01 Dumps – Check Free 4A0-D01 Exam Dumps (2026)
Updated 4A0-D01 exam with Nokia Real Exam Questions
NEW QUESTION # 19
Which of the following statements about configuration checkpoints in Nokia SR Linux is FALSE?
- A. The current running configuration can be saved as a JSON-formatted checkpoint file.
- B. The operator can generate a new checkpoint when committing configuration changes.
- C. Checkpoint 0 is always the oldest checkpoint.
- D. The operator can revert to any existing checkpoint.
Answer: C
Explanation:
In Nokia SR Linux, checkpoint numbering is dynamic. The system assigns the lowest available number to the most recent checkpoint, not necessarily "0." When the number of saved checkpoints exceeds the configured maximum, the oldest checkpoint is removed, and the remaining checkpoints are renumbered accordingly. Therefore, checkpoint "0" is not always the oldest checkpoint.
NEW QUESTION # 20
How are LLDP frames advertised between two Nokia SR Linux routers?
- A. They are periodically flooded to the broadcast MAC address on each interface.
- B. They are forwarded to the destination node based on the MAC VRF table.
- C. They are routed to the destination node based on the IP VRF forwarding table.
- 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 # 21
How does Nokia's Fabric Services System use a fabric intent to build the DC switch fabric?
- A. It uses a digital sandbox to connect workloads to the DC fabric.
- B. It uses a YAML file that defines the intended configuration state of the DC fabric.
- C. It uses telemetry data to build the configuration files for the DC fabric.
- D. It uses a digital sandbox to build the configuration files for the DC fabric.
Answer: B
Explanation:
Nokia's Fabric Services System uses a fabric intent defined in a declarative YAML file to specify the desired state of the data center fabric, which is then used to build and configure the fabric accordingly.
NEW QUESTION # 22
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. IPv4 destination prefix
- C. Preference value
- 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 # 23
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. VLXAN tunneling is used to provide Layer 2 connectivity between workloads over a common underlay network.
- C. EVPN routes are exchanged between VXLAN tunnel endpoints.
- 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 # 24
Based on the exhibit output, what CLI command can be used to display the contents of "bgp-log" in Nokia's SR Linux?
- A. info system logging buffer bgp-log
- B. show system logging buffer bgp-log
- C. show system logging file bgp-log
- D. info system logging file bgp-log
Answer: C
Explanation:
The "bgp-log" is defined as a log file in the configuration, so the correct command to display its contents is show system logging file bgp-log.
NEW QUESTION # 25
Which of the following statements about using BFD with BGP is FALSE?
- A. It can help rapidly detect link failures.
- B. Using BFD can speed up the BGP advertisement interval.
- C. BGP is notified if several BFD control packets are missed.
- D. The BFD endpoints agree on the send/receive rate of control packets.
Answer: B
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 # 26
Which of the following is NOT one of the reasons why BGP is used as the routing protocol in the data center?
- A. It is a well understood and mature routing protocol.
- B. It is more efficient than link-state protocols like IS-IS and OSPF.
- C. It supports both IPv4 and IPv6.
- D. BGP neighbors automatically discover each other.
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 # 27
Which of the following statements about Nokia's SR Linux logging is FALSE?
- A. SR Linux logs can be saved locally as an encrypted file.
- B. SR Linux logs are handled using facility Iocal6 of the native Linux syslog utility.
- 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: A
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 # 28
Which of the following statements about the data center's leaf-spine topology (clos network) is FALSE?
- A. It uses the spanning tree protocol to avoid forwarding loops.
- B. Each leaf router is connected to all the spine routers in the cluster.
- C. It uses ECMP to distribute traffic across duplicate links.
- D. It provides a consistent path for east-west traffic.
Answer: A
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 # 29
Examine the exhibit. What type of information is NOT included in the IMET route advertised by VTEP1?
- A. Flooding list
- B. IP address of VTEP1
- C. Route distinguisher of VTEP1's MAC-VRF
- D. VXLAN network identifier (VNI)
Answer: C
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 # 30
Which of the following statements about IP-VRFs in Nokia's SR Linux is FALSE?
- A. The router maintains a distinct route table for each IP-VRF instance.
- B. Packets in an IP-VRF are forwarded based on the destination IP address.
- C. Multiple servers can be connected to the same subnet in an IP-VRF.
- D. An IP-VRF is a Layer 3 network instance.
Answer: C
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 # 31
Which of the following statements about multi-homing in EVPN is FALSE?
- A. The ES identifier (ESI) uniquely identifies an ES and it is locally significant for a particular leaf.
- B. The Ethernet Segment (ES) identifies a set of links that connects a host to one or more leafs.
- C. Type 4 Ethernet Segment (ES) EVPN route is used for designated forwarder (DF) election for an ES.
- D. Type 1 Ethernet Auto-Discovery (A-D) EVPN route is used to support EVPN multi-homing.
Answer: A
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 # 32
Which of the following statements about SR Linux interfaces is FALSE?
- A. The loopback interface is a physical interface directly connected to another interface on the same chassis.
- B. Only one management interface is allowed.
- C. Network interfaces are associated with physical ports on the linecards.
- D. Layer 2 parameters such as MTU are configured at the SR Linux interface level while Layer 3 parameters are configured at the subinterface level.
Answer: A
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 # 33
Which of the following statements about next-hop groups is TRUE?
- A. Multiple static routes can use the same next-hop-group.
- B. CMP destination unreachable message is always sent when blackhole is specified in the next-hop-group.
- C. A next-hop-group can only specify one next-hop for forwarding
- D. The next-hop for a next-hop-group must be a local IP address.
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 # 34
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