4A0-D01試験問題集合格できるには更新された2025年08月テスト問題集
4A0-D01テスト問題練習は2025年最新のに更新された37問あります
質問 # 13
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 more efficient than link-state protocols like IS-IS and OSPF.
- C. BGP neighbors automatically discover each other.
- D. It is a well understood and mature routing protocol.
正解：B
解説：
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.
質問 # 14
Which of the following statements about the MAC table shown in the exhibit output is FALSE?
- A. The MAC re-learning rate has exceeded the threshold within the specified time frame.
- B. Mac-duplication detection is enabled in mac-vrf-1.
- C. [interface ethernet-1/10 is configured with the MAC address 00:25:BA:00:00:10.
- D. The MAC address 00:25: BA:00:00:10 is learnt on more than one interface.
正解：D
解説：
The MAC address 00:25:BA:00:00:10 is listed as "duplicate," but it appears only once associated with interface ethernet-1/10. Therefore, it is not learned on more than one interface.
質問 # 15
Which of the following statements about the YANG model used in Nokia's SR Linux is FALSE?
- A. The YANG model can be converted into other formats such as JSON or XML.
- 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 provides a standardized way for applications to retrieve SR Linux configuration and state information.
正解：B
解説：
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.
質問 # 16
Which of the following statements about a MAC-VRF is FALSE?
- A. Multiple devices can be connected to the same IP subnet using a MAC-VRF.
- B. Packets received in a MAC-VRF are forwarded based on destination IP address.
- C. A MAC-VRF is a Layer 2 network instance.
- D. Bridge table entries contain an exit interface for each destination address.
正解：B
解説：
In a MAC-VRF, packets are forwarded based on Layer 2 information such as destination MAC addresses, not on destination IP addresses.
質問 # 17
Which of the following statements about next-hop groups is TRUE?
- A. The next-hop for a next-hop-group must be a local IP address.
- B. A next-hop-group can only specify one next-hop for forwarding
- C. CMP destination unreachable message is always sent when blackhole is specified in the next-hop-group.
- D. Multiple static routes can use the same next-hop-group.
正解：D
解説：
Multiple static routes can share the same next-hop group, enabling efficient reuse of next-hop definitions for load balancing or redundancy.
質問 # 18
Which of the following statements about Nokia's Fabric Services System is FALSE?
- A. Digital sandbox provides notification of performance issues in the data center fabric.
- B. Telemetry data is provided in a context that is relevant to the fabric intent.
- C. Data center fabric configuration is represented as the fabric intent in a declarative YAML format.
- D. Cloud-native design enables easy integration with the customer's environment.
正解：A
解説：
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.
質問 # 19
Which of the following statements about Zero Touch Provisioning (ZTP) is FALSE?
- A. The ZTP process relies on a DHCP server for an IP address.
- B. The ZTP process downloads a provisioning script defined in the TLS profile.
- C. ZTP allows a router to become operational in the network without any pre-provisioning.
- D. The ZTP process is managed by the ZTP application in Nokia SR Linux.
正解：B
解説：
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.
質問 # 20
Which of the following statements about using BFD with BGP is FALSE?
- A. BGP is notified if several BFD control packets are missed.
- B. The BFD endpoints agree on the send/receive rate of control packets.
- C. It can help rapidly detect link failures.
- D. Using BFD can speed up the BGP advertisement interval.
正解：D
解説：
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.
質問 # 21
Which of the following is NOT part of Day 2+ operations with Nokia's Fabric Services System?
- A. Analyze the overall health of the data center fabric for proactive operations.
- B. Use a fabric intent to build and validate design templates.
- C. Monitor the data center fabric using model-driven telemetry.
- D. Use the digital sandbox to test and validate configuration changes and upgrades.
正解：B
解説：
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.
質問 # 22
Which of the following is NOT one of the user types supported in Nokia SR Linux?
- A. Regular Linux OS users
- B. Container users
- C. SR Linux users
- D. Remote users
正解：D
解説：
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.
質問 # 23
Which of the following statements about a CPM-filter policer is FALSE?
- A. The system-cpu-policer is hardware-based.
- B. The system-cpu-policer acts on the aggregate traffic from all line cards.
- C. Hierarchical policing of control plane traffic is supported.
- D. CPM-filter entries can use both a distributed-policer and a system-cpu-policer.
正解：A
解説：
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.
質問 # 24
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.
正解：A
解説：
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.
質問 # 25
Examine the exhibit. What type of information is NOT included in the IMET route advertised by VTEP1?
- A. Route distinguisher of VTEP1's MAC-VRF
- B. VXLAN network identifier (VNI)
- C. IP address of VTEP1
- D. Flooding list
正解：A
解説：
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.
質問 # 26
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 telemetry data to build the configuration files for the DC fabric.
- C. It uses a digital sandbox to build the configuration files for the DC fabric.
- D. It uses a YAML file that defines the intended configuration state of the DC fabric.
正解：D
解説：
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.
質問 # 27
Based on the exhibit output, which of the following is NOT the reason the user runs the "baseline diff" command?
- A. User admin is not able to commit their changes.
- B. User admin notices that "!" appears in the CLI prompt.
- C. User admin wants to check if there are differences between the current running config and their baseline datastore.
- D. Another user has committed changes.
正解：A
解説：
The "baseline diff" command is used to compare the candidate configuration against the baseline datastore to see changes or conflicts, especially when multiple users are involved or to verify differences. It does not indicate that the user is unable to commit changes.
質問 # 28
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