Nokia Data Center Fabric Fundamentals v1.0
Question 1
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 DHCP server to provide the IP address and default gateway
- B. Uses the Web or FTP server to provide the RPM packages and any necessary images
- C. Downloads and executes provisioning scripts
- D. Uses Nokia’s Fabric Services System to deploy the digital sandbox automatically
Answer : D
Question 2
Which of the following is NOT part of Day 2+ operations with Nokia’s Fabric Services System?
- A. Monitor the data center fabric using model-driven telemetry.
- B. Analyze the overall health of the data center fabric for proactive operations.
- C. Use the digital sandbox to test and validate configuration changes and upgrades.
- D. Use a fabric intent to build and validate design templates.
Answer : D
Question 3
How does Nokia’s Fabric Services System use a fabric intent to build the DC switch fabric?
- A. It uses a YAML file that defines the intended configuration state of the DC fabric.
- B. It uses a digital sandbox to connect workloads to the DC fabric.
- C. It uses a digital sandbox to build the configuration files for the DC fabric.
- D. It uses telemetry data to build the configuration files for the DC fabric.
Answer : A
Question 4
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 periodically sent to a multicast MAC address on each interface.
- C. They are periodically flooded to the broadcast MAC address on each interface.
- D. They are routed to the destination node based on the IP VRF forwarding table.
Answer : B
Question 5
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. Another user has committed changes.
- C. User admin wants to check if there are differences between the current running config and their baseline datastore.
- D. User admin notices that “!” appears in the CLI prompt.
Answer : A
Question 6
Which of the following statements about the modern data center’s leaf-spine topology (Clos network) is FALSE?
- A. Additional uplink capacity can be provided by adding more spine routers.
- B. It uses a combination of Layer 2 switches and Layer 3 routers to evenly distribute traffic flows.
- C. A group of leaf and spine routers can form a cluster which is connected to other clusters using a super spine layer.
- D. It provides flexibility in scaling by adding or removing clusters as required.
Answer : B
Question 7
Which of the following statements about Nokia’s SR Linux CLI is FALSE?
- A. The CLI is open source and written in Python.
- B. The CLI provides capabilities not available through the gNMI interface.
- C. The CLI supports plug-ins which allows customization of the CLI.
- D. The CLI supports auto-completion, context sensitive commands, value ranges, and wildcards.
Answer : A
Question 8
Which of the following statements about Nokia’s SR Linux architecture is FALSE?
- A. All routing protocols are implemented as a single Linux application.
- B. A YANG model is used to define the configuration and state information of each application.
- C. The Impart database is used to manage the exchange of configuration and state information between applications.
- D. Third-party applications can access the SR Linux applications.
Answer : A
Question 9
Consider the exhibit.
Based on the output, what happens after the user runs the “baseline update” command?
- A. It will only commit user admin’s changes to the running config.
- B. It will validate user admin’s candidate datastore.
- C. It will apply user admin’s changes conditionally until a confirmation is received.
- D. It will copy the running config into user admin’s baseline datastore.
Answer : D
Question 10
Which of the following statements about Nokia’s SR Linux subinterfaces is FALSE?
- A. Multiple IP addresses can be assigned to a subinterface.
- B. Port speed can be configured on a subinterface.
- C. VLAN ID must be configured if multiple subinterfaces are configured on the same interface.
- D. Static IP address assignment and the use of DHCP are mutually exclusive.
Answer : B
Question 11
When multiple routes are learned for the same prefix, which of the following statements about how the best route is selected in Nokia’s SR Linux is FALSE?
- A. If the same prefix is learned from two different protocols, the route from the protocol with the highest preference value is selected.
- B. If the same prefix is learned from the same protocol, the route with the lowest metric is selected.
- C. If the same prefix is learned from the same protocol with the same metric, ECMP can be used to load balance traffic over the different routes.
- D. A direct route for a prefix is always preferred over routes learned from other protocols.
Answer : A
Question 12
Which of the following statements best describes the function of an IRB interface in Nokia’s SR Linux?
- A. It interconnects MAC-VRFs between a leaf router and a spine router.
- B. It interconnects IP-VRFs between a leaf router and a spine router.
- C. It connects a MAC-VRF on a leaf router to an IP-VRF on a spine router.
- D. It connects a MAC-VRF to an IP-VRF on the same leaf router.
Answer : D
Question 13
Which of the following is NOT the recommended BGP routing design for a leaf and spine data center?
- A. Each spine router in its own AS.
- B. Each leaf router in its own AS.
- C. eBGP peering between each leaf and each spine router.
- D. Private ASN range used for leaf and spine routers.
Answer : A
Question 14
Consider the exhibit.
Which of the following statements is FALSE?
- A. A static route entry with destination prefix 192.168.20.0/30 is configured.
- B. The next-hop for this route is selected using a round-robin algorithm.
- C. Packets matching this destination prefix are sent through either ethernet-1/1.0 or ethernet-1/2.0.
- D. The next-hop group for this static route is configured with more than one next-hop.
Answer : B
Question 15
Which of the following statements about the AS path attribute is FALSE?
- A. It is a parameter associated with each prefix advertised to BGP peers.
- B. It is used for route selection.
- C. It is used to uniquely identify a BGP router.
- D. It is used for loop detection.
Answer : C