Nokia 4A0-D01 Exam Practice Test Instant Access

Question 1

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

AMonitor the data center fabric using model-driven telemetry.

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

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

DUse a fabric intent to build and validate design templates.

Answer : D

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 2

Examine the exhibit. Which of the following statements is TRUE?

AA recursive lookup is performed to resolve 10.2.1.0 to use 10.1.1.0.

BA recursive lookup is performed to resolve 10.1.1.0 to use 10.2.1.0.

CThe next-hop group for this static route is configured with two next-hops.

DThe next-hop selected for this route will be based on the preference value configured for each next-hop.

Answer : C

The static route shows two next-hop IP addresses (10.1.1.0 and 10.2.1.0) listed, indicating that a next-hop group with multiple next-hops is configured for load balancing or redundancy.

Question 3

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

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

BSpine routers learn prefixes from leaf routers directly using eBGP.

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

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

Answer : D

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 4

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

Ashow system logging buffer bgp-log

Bshow system logging file bgp-log

Cinfo system logging buffer bgp-log

Dinfo system logging file bgp-log

Answer : B

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 5

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

ACheckpoint 0 is always the oldest checkpoint.

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

CThe operator can revert to any existing checkpoint.

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

Answer : A

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 6

Which of the following statements about the YANG model used in Nokia's SR Linux is FALSE?

AAll configuration and state information is defined as a YANG model.

BThe YANG model uses a tree structure with ''leafs'' as the branches and ''containers'' as the data components.

CThe YANG model can be converted into other formats such as JSON or XML.

DThe YANG model provides a standardized way for applications to retrieve SR Linux configuration and state information.

Answer : B

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.

Question 7

Which of the following Nokia's SR Linux ACLs is instantiated on all line cards to copy incoming packets to the CPM?

ACapture-filter ACL

BCPM-filter ACL

CIngress ACL

DEgress ACL

Answer : B

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.

Nokia Data Center Fabric Fundamentals 4A0-D01 Exam Practice Test