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Free Nokia Certified Data Center Fabric Professional 4A0-D01 Ultimate Study Guide (Updated 37 Questions)
Nokia 4A0-D01 Exam Syllabus Topics:
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NEW QUESTION # 17
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. A cpm-filter is configured to accept ICMP packets, which are then captured in a log file.
- D. capture-filter is configured to copy ICMP packets to the CPM where they are processed by the tcpdump-like utility.
Answer: D
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 # 18
Examine the exhibit. What type of information is NOT included in the IMET route advertised by VTEP1?
- A. IP address of VTEP1
- B. VXLAN network identifier (VNI)
- C. Flooding list
- D. Route distinguisher of VTEP1's MAC-VRF
Answer: D
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 # 19
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 the Web or FTP server to provide the RPM packages and any necessary images
- B. Uses Nokia's Fabric Services System to deploy the digital sandbox automatically
- C. Downloads and executes provisioning scripts
- D. Uses the DHCP server to provide the IP address and default gateway
Answer: B
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 # 20
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. The ZTP process is managed by the ZTP application in Nokia SR Linux.
- C. ZTP allows a router to become operational in the network without any pre-provisioning.
- 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 # 21
Which of the following statements about using BFD with BGP is FALSE?
- A. Using BFD can speed up the BGP advertisement interval.
- B. It can help rapidly detect link failures.
- 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: 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 # 22
Which of the following Nokia's SR Linux ACLs is instantiated on all line cards to copy incoming packets to the CPM?
- A. Ingress ACL
- B. Capture-filter ACL
- C. CPM-filter ACL
- D. Egress ACL
Answer: C
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 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. All configuration and state information is defined as a YANG model.
- C. The YANG model provides a standardized way for applications to retrieve SR Linux configuration and state information.
- D. The YANG model uses a tree structure with "leafs" as the branches and "containers" as the data components.
Answer: D
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 # 24
Which of the following is NOT how prefixes are typically learned and advertised in a leaf and spine data center?
- A. Spine routers advertise learned prefixes to leaf routers directly using eBGP.
- B. Spine routers learn prefixes from leaf routers directly using eBGP.
- C. Each leaf router learns the prefixes of remote servers from other leaf routers directly using eBGP.
- D. Each leaf router advertises the prefixes of its own locally connected servers.
Answer: C
Explanation:
Leaf routers do not learn prefixes from other leaf routers directly using eBGP; instead, leaf routers learn remote prefixes via spine routers. The spine acts as the route reflector or intermediary between leaf routers.
NEW QUESTION # 25
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. 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. Telemetry data is provided in a context that is relevant to the fabric intent.
Answer: A
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 # 26
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. 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. Network interfaces are associated with physical ports on the linecards.
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 # 27
Which of the following statements about the IRB subinterface configuration in Nokia SR Linux is FALSE?
- A. One IRB subinterface is configured for each interface within a MAC-VRF network instance.
- B. An IP address is configured under the IRB's subinterface.
- C. One IRB subinterface is configured in a MAC-VRF network instance.
- D. An IRB subinterface is configured in an IP-VRF network instance.
Answer: A
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 # 28
Based on the exhibit output, which of the following is NOT the reason the user runs the "baseline diff" command?
- A. User admin wants to check if there are differences between the current running config and their baseline datastore.
- B. User admin is not able to commit their changes.
- C. User admin notices that "!" appears in the CLI prompt.
- D. Another user has committed changes.
Answer: B
Explanation:
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.
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. 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.
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
Which of the following is NOT one of the characteristics of Nokia's SR Linux?
- A. It uses a modular, state-driven architecture that gives applications efficient access to system information.
- B. It uses an unmodified Linux kernel that simplifies the use of third party applications.
- C. It includes a NetOgs development kit that supports the integration of third-party applications.
- D. It uses mature and stable SNMP protocol to access the command line interface.
Answer: D
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 # 31
Which of the following statements about the CLI modes in Nokia's SR Linux is FALSE?
- A. The show mode uses pre-defined reports to display operational information.
- 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 running mode is used to make configuration changes.
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 # 32
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