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QUESTION 14
Which of the following is NOT how prefixes are typically learned and advertised in a leaf and spine data center?

 Spine routers advertise learned prefixes to leaf routers directly using eBGP.

 Spine routers learn prefixes from leaf routers directly using eBGP.

 Each leaf router advertises the prefixes of its own locally connected servers.

 Each leaf router learns the prefixes of remote servers from other leaf routers directly using eBGP.

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.

QUESTION 15
Which of the following statements about Zero Touch Provisioning (ZTP) is FALSE?

 The ZTP process downloads a provisioning script defined in the TLS profile.

 The ZTP process is managed by the ZTP application in Nokia SR Linux.

 The ZTP process relies on a DHCP server for an IP address.

 ZTP allows a router to become operational in the network without any pre-provisioning.

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.

QUESTION 16
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?

 Uses the DHCP server to provide the IP address and default gateway

 Uses the Web or FTP server to provide the RPM packages and any necessary images

 Downloads and executes provisioning scripts

 Uses Nokia’s Fabric Services System to deploy the digital sandbox automatically

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.

QUESTION 17
Which of the following statements about multi-homing in EVPN is FALSE?

 Type 1 Ethernet Auto-Discovery (A-D) EVPN route is used to support EVPN multi-homing.

 Type 4 Ethernet Segment (ES) EVPN route is used for designated forwarder (DF) election for an ES.

 The ES identifier (ESI) uniquely identifies an ES and it is locally significant for a particular leaf.

 The Ethernet Segment (ES) identifies a set of links that connects a host to one or more leafs.

The Ethernet Segment Identifier (ESI) uniquely identifies an Ethernet Segment (ES) globally across the EVPN domain, not just locally for a particular leaf.

QUESTION 18
Based on the exhibit output, which of the following is NOT the reason the user runs the “baseline diff” command?

 User admin is not able to commit their changes.

 Another user has committed changes.

 User admin wants to check if there are differences between the current running config and their baseline datastore.

 User admin notices that “!” appears in the CLI prompt.

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.

QUESTION 19
Which of the following is NOT part of Day 2+ operations with Nokia’s Fabric Services System?

 Monitor the data center fabric using model-driven telemetry.

 Analyze the overall health of the data center fabric for proactive operations.

 Use the digital sandbox to test and validate configuration changes and upgrades.

 Use a fabric intent to build and validate design templates.

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.

QUESTION 20
Which of the following statements about configuration checkpoints in Nokia SR Linux is FALSE?

 Checkpoint 0 is always the oldest checkpoint.

 The current running configuration can be saved as a JSON-formatted checkpoint file.

 The operator can revert to any existing checkpoint.

 The operator can generate a new checkpoint when committing configuration changes.

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.

QUESTION 21
Examine the exhibit. What type of information is NOT included in the IMET route advertised by VTEP1?

 VXLAN network identifier (VNI)

 Flooding list

 Route distinguisher of VTEP1’s MAC-VRF

 IP address of VTEP1

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.

QUESTION 22
Based on the exhibit output, what CLI command can be used to display the contents of “bgp-log” in Nokia’s SR Linux?

 show system logging buffer bgp-log

 show system logging file bgp-log

 info system logging buffer bgp-log

 info system logging file bgp-log

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.

QUESTION 23
Which of the following is NOT one of the user types supported in Nokia SR Linux?

 SR Linux users

 Regular Linux OS users

 Container users

 Remote users

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.

QUESTION 24
Which of the following is NOT one of the reasons why BGP is used as the routing protocol in the data center?

 It supports both IPv4 and IPv6.

 It is more efficient than link-state protocols like IS-IS and OSPF.

 BGP neighbors automatically discover each other.

 It is a well understood and mature routing protocol.

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.

QUESTION 25
Which of the following statements about resilient ECMP load balancing is TRUE?

 The hash value used to distribute traffic is calculated as a modulo function on specific fields of the packet header.

 Hash buckets are used to ensure that flows egressing the same interface on one router use different egress interfaces on downstream routers.

 A different hash seed is used on downstream routers to ensure that flows are randomly distributed across all eligible router interfaces.

 When one of the next-hops fail, only flows currently egressing to that next-hop are impacted.

In resilient ECMP load balancing, when a next-hop fails, only the flows that were using that specific next-hop are affected and need to be redistributed, minimizing disruption to other flows.

QUESTION 26
Which of the following is NOT a valid logging source used in Nokia’s SR Linux?

 Linux facility + priority

 Console

 SR Linux subsystem + priority

 Syslog filter

“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.

QUESTION 27
Which of the following statements about the MAC table shown in the exhibit output is FALSE?

 The MAC address 00:25: BA:00:00:10 is learnt on more than one interface.

 The MAC re-learning rate has exceeded the threshold within the specified time frame.

 [interface ethernet-1/10 is configured with the MAC address 00:25:BA:00:00:10.

 Mac-duplication detection is enabled in mac-vrf-1.

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.

QUESTION 28
Which of the following statements about using BFD with BGP is FALSE?

 It can help rapidly detect link failures.

 The BFD endpoints agree on the send/receive rate of control packets.

 BGP is notified if several BFD control packets are missed.

 Using BFD can speed up the BGP advertisement interval.

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.

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