Pass Cisco DEVASC 200-901 Exam in First Attempt Easily
Real Cisco DEVASC 200-901 Exam Questions, Accurate & Verified Answers As Experienced in the Actual Test!

Verified by experts
3 products

You save $69.98

200-901 Premium Bundle

  • Premium File 431 Questions & Answers
  • Last Update: Nov 9, 2026
  • Training Course 11 Lectures
  • Study Guide 1212 Pages
$79.99 $149.97

Purchase Individually

  • Premium File

    431 Questions & Answers
    Last Update: Nov 9, 2026

    $76.99
    $69.99
  • Training Course

    11 Lectures

    $43.99
    $39.99
  • Study Guide

    1212 Pages

    $43.99
    $39.99

DevNet Associate (DEVASC) 200-901 Practice Test 53

Question 520

The initial implementation fails or does not meet the expected behavior. A network app deploys one huge monthly change with no health monitoring, making failures hard to localize. Which investigation should be prioritized to diagnose the problem?

  1. Inspect deployment frequency, canary metrics and rollback events.
  2. Inspect deployment inventory, egress policies and platform management access.
  3. Inspect image digest, runtime dependencies, process list and container logs.
  4. Compare CI artifact digest, registry manifest and deployed workload image reference.

Explanation

Correct Answer

A:

Inspect deployment frequency, canary metrics and rollback events. These are the relevant initial evidence checks for Small safe releases with observability. Intended action: Use smaller controlled releases with automated checks, telemetry and tested rollback procedures. Expected success condition: A bad canary release is detected and reversed before affecting all users.

Incorrect Answers

B:

Inspect deployment inventory, egress policies and platform management access. This investigation primarily applies to Private cloud isolation for internal services, not the current Small safe releases with observability problem. Prioritize: Inspect deployment frequency, canary metrics and rollback events.

C:

Inspect image digest, runtime dependencies, process list and container logs. This investigation primarily applies to Container versus VM for reproducible app packaging, not the current Small safe releases with observability problem. Prioritize: Inspect deployment frequency, canary metrics and rollback events.

D:

Compare CI artifact digest, registry manifest and deployed workload image reference. This investigation primarily applies to Artifact promotion instead of rebuild drift, not the current Small safe releases with observability problem. Prioritize: Inspect deployment frequency, canary metrics and rollback events.

Question 521

A Cisco network automation team has this requirement: A fleet has interface descriptions that drift from a source-of-truth file and a collector relies on fragile show-command text parsing. Which design or implementation action best addresses it?

  1. Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration.
  2. Treat the rpc-error as a failed configuration operation and investigate authorization or datastore permissions.
  3. Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation.
  4. Interpret the script as deleting matching log files older than seven days within the specified directory.

Explanation

Correct Answer

C:

Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation. Technical reason: Model-driven automation uses structured schemas and operations to represent intended configuration. Verify by: Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing. Deployment qualification: Model support and configuration ownership must be verified on each target platform.

Incorrect Answers

A:

Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration. This instead targets the different case Terraform versus Ansible responsibilities. The described Desired-state YANG instead of CLI scraping requirement specifically calls for Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation.

B:

Treat the rpc-error as a failed configuration operation and investigate authorization or datastore permissions. This instead targets the different case Interpret NETCONF rpc-error response. The described Desired-state YANG instead of CLI scraping requirement specifically calls for Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation.

D:

Interpret the script as deleting matching log files older than seven days within the specified directory. This instead targets the different case Bash script conditional cleanup workflow. The described Desired-state YANG instead of CLI scraping requirement specifically calls for Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation.

Question 522

After deployment, an engineer must prove the proposed solution works. A fleet has interface descriptions that drift from a source-of-truth file and a collector relies on fragile show-command text parsing. Which observed result is the most direct acceptance evidence?

  1. The parsed list reports the enabled flags for the requested interfaces without applying changes.
  2. A fixture containing two devices produces two correctly labeled status rows without writes.
  3. Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.
  4. Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing.

Explanation

Correct Answer

D:

Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing. Recommended implementation: Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation. Why the observation matters: Model-driven automation uses structured schemas and operations to represent intended configuration.

Incorrect Answers

A:

The parsed list reports the enabled flags for the requested interfaces without applying changes. That observation could confirm Interpret RESTCONF configuration retrieval, not the current Desired-state YANG instead of CLI scraping case. For this case, the decisive observation is: Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing.

B:

A fixture containing two devices produces two correctly labeled status rows without writes. That observation could confirm Interpret Catalyst Center device health report, not the current Desired-state YANG instead of CLI scraping case. For this case, the decisive observation is: Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing.

C:

Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases. That observation could confirm Terraform versus Ansible responsibilities, not the current Desired-state YANG instead of CLI scraping case. For this case, the decisive observation is: Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing.

Question 523

A developer is explaining the underlying technical behavior. A fleet has interface descriptions that drift from a source-of-truth file and a collector relies on fragile show-command text parsing. Which principle is most relevant to this case?

  1. Model-driven automation uses structured schemas and operations to represent intended configuration.
  2. Provisioning tools and configuration-management tools have overlapping but different primary abstractions.
  3. Unified diff includes surrounding unchanged text to orient a patch hunk.
  4. Network simulation provides a safe environment for examining design behavior before live deployment.

Explanation

Correct Answer

A:

Model-driven automation uses structured schemas and operations to represent intended configuration. This mechanism explains Desired-state YANG instead of CLI scraping. Action: Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation. Expected confirmation: Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing.

Incorrect Answers

B:

Provisioning tools and configuration-management tools have overlapping but different primary abstractions. This relates to Terraform versus Ansible responsibilities. In the current Desired-state YANG instead of CLI scraping case the operative principle is: Model-driven automation uses structured schemas and operations to represent intended configuration.

C:

Unified diff includes surrounding unchanged text to orient a patch hunk. This relates to Unified diff context versus change lines. In the current Desired-state YANG instead of CLI scraping case the operative principle is: Model-driven automation uses structured schemas and operations to represent intended configuration.

D:

Network simulation provides a safe environment for examining design behavior before live deployment. This relates to Cisco Modeling Labs topology before production change. In the current Desired-state YANG instead of CLI scraping case the operative principle is: Model-driven automation uses structured schemas and operations to represent intended configuration.

Question 524

A team does not apply the necessary control or correction. A fleet has interface descriptions that drift from a source-of-truth file and a collector relies on fragile show-command text parsing. Which resulting failure or risk is most directly relevant?

  1. CLI regex-only logic can fail silently when human-readable command output changes.
  2. Applying blindly can destroy emergency changes or preserve an unauthorized exposure.
  3. An unbounded loop can turn one incorrect policy into an enterprise-wide outage.
  4. Querying an unrelated controller could give incomplete or stale device state.

Explanation

Correct Answer

A:

CLI regex-only logic can fail silently when human-readable command output changes. This is the direct exposure for Desired-state YANG instead of CLI scraping. Mitigate with: Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation. Check success by: Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing.

Incorrect Answers

B:

Applying blindly can destroy emergency changes or preserve an unauthorized exposure. This risk occurs in the different Detect drift with planned IaC comparison situation. For the given Desired-state YANG instead of CLI scraping requirement, the directly relevant risk is: CLI regex-only logic can fail silently when human-readable command output changes.

C:

An unbounded loop can turn one incorrect policy into an enterprise-wide outage. This risk occurs in the different Review deployment blast radius and rollback situation. For the given Desired-state YANG instead of CLI scraping requirement, the directly relevant risk is: CLI regex-only logic can fail silently when human-readable command output changes.

D:

Querying an unrelated controller could give incomplete or stale device state. This risk occurs in the different Device-level interface test outside controller policy situation. For the given Desired-state YANG instead of CLI scraping requirement, the directly relevant risk is: CLI regex-only logic can fail silently when human-readable command output changes.

Question 525

The initial implementation fails or does not meet the expected behavior. A fleet has interface descriptions that drift from a source-of-truth file and a collector relies on fragile show-command text parsing. Which investigation should be prioritized to diagnose the problem?

  1. Inspect YANG schema, desired-state diff, structured device data and repeated-run results.
  2. Inspect iteration source, site allowlist, diff and reviewer approval.
  3. Inspect resource path, HTTP method, module data and the absence of PATCH/PUT/POST.
  4. Inspect status line, interface key and the boolean leaf in the returned model.

Explanation

Correct Answer

A:

Inspect YANG schema, desired-state diff, structured device data and repeated-run results. These are the relevant initial evidence checks for Desired-state YANG instead of CLI scraping. Intended action: Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation. Expected success condition: Repeated runs converge eligible interfaces to the approved descriptions without text-format-dependent parsing.

Incorrect Answers

B:

Inspect iteration source, site allowlist, diff and reviewer approval. This investigation primarily applies to Review deployment blast radius and rollback, not the current Desired-state YANG instead of CLI scraping problem. Prioritize: Inspect YANG schema, desired-state diff, structured device data and repeated-run results.

C:

Inspect resource path, HTTP method, module data and the absence of PATCH/PUT/POST. This investigation primarily applies to Interpret RESTCONF configuration retrieval, not the current Desired-state YANG instead of CLI scraping problem. Prioritize: Inspect YANG schema, desired-state diff, structured device data and repeated-run results.

D:

Inspect status line, interface key and the boolean leaf in the returned model. This investigation primarily applies to Interpret RESTCONF HTTP 200 resource data, not the current Desired-state YANG instead of CLI scraping problem. Prioritize: Inspect YANG schema, desired-state diff, structured device data and repeated-run results.

Question 526

A Cisco network automation team has this requirement: A source-of-truth generator sends invalid VLAN IDs to multiple switches because device limits were never represented in its data model. Which design or implementation action best addresses it?

  1. Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration.
  2. Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes.
  3. Use a suitable declarative Ansible module with desired settings and idempotent repeated runs.
  4. Interpret the OR branch as creating svc_bot only when the id lookup fails.

Explanation

Correct Answer

B:

Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes. Technical reason: Modeled constraints catch structural and allowed-value errors earlier than device trial-and-error. Verify by: Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration. Deployment qualification: Semantic business constraints beyond the schema still need policy checks.

Incorrect Answers

A:

Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration. This instead targets the different case Terraform versus Ansible responsibilities. The described Validate interface constraints before rollout requirement specifically calls for Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes.

C:

Use a suitable declarative Ansible module with desired settings and idempotent repeated runs. This instead targets the different case Ansible playbook for idempotent configuration. The described Validate interface constraints before rollout requirement specifically calls for Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes.

D:

Interpret the OR branch as creating svc_bot only when the id lookup fails. This instead targets the different case Bash user creation guarded by id. The described Validate interface constraints before rollout requirement specifically calls for Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes.

Question 527

After deployment, an engineer must prove the proposed solution works. A source-of-truth generator sends invalid VLAN IDs to multiple switches because device limits were never represented in its data model. Which observed result is the most direct acceptance evidence?

  1. The transaction is reported failed and no unauthorized configuration change is claimed.
  2. The change summary reports only the actual timeout addition and preserves context unchanged.
  3. Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration.
  4. One suite reaches both lab routers using intended aliases without editing its test logic.

Explanation

Correct Answer

C:

Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration. Recommended implementation: Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes. Why the observation matters: Modeled constraints catch structural and allowed-value errors earlier than device trial-and-error.

Incorrect Answers

A:

The transaction is reported failed and no unauthorized configuration change is claimed. That observation could confirm Interpret NETCONF rpc-error response, not the current Validate interface constraints before rollout case. For this case, the decisive observation is: Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration.

B:

The change summary reports only the actual timeout addition and preserves context unchanged. That observation could confirm Unified diff context versus change lines, not the current Validate interface constraints before rollout case. For this case, the decisive observation is: Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration.

D:

One suite reaches both lab routers using intended aliases without editing its test logic. That observation could confirm Testbed metadata for automated lab connections, not the current Validate interface constraints before rollout case. For this case, the decisive observation is: Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration.

Question 528

A developer is explaining the underlying technical behavior. A source-of-truth generator sends invalid VLAN IDs to multiple switches because device limits were never represented in its data model. Which principle is most relevant to this case?

  1. An HTTP 200 reports request success; modeled leaf values separately describe device state.
  2. The service module controls both immediate state and boot-time enablement.
  3. Modeled constraints catch structural and allowed-value errors earlier than device trial-and-error.
  4. Simulation tests system dynamics; test frameworks provide machine-checked acceptance evidence.

Explanation

Correct Answer

C:

Modeled constraints catch structural and allowed-value errors earlier than device trial-and-error. This mechanism explains Validate interface constraints before rollout. Action: Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes. Expected confirmation: Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration.

Incorrect Answers

A:

An HTTP 200 reports request success; modeled leaf values separately describe device state. This relates to Interpret RESTCONF HTTP 200 resource data. In the current Validate interface constraints before rollout case the operative principle is: Modeled constraints catch structural and allowed-value errors earlier than device trial-and-error.

B:

The service module controls both immediate state and boot-time enablement. This relates to Ansible service started and enabled. In the current Validate interface constraints before rollout case the operative principle is: Modeled constraints catch structural and allowed-value errors earlier than device trial-and-error.

D:

Simulation tests system dynamics; test frameworks provide machine-checked acceptance evidence. This relates to CML and pyATS roles in preflight. In the current Validate interface constraints before rollout case the operative principle is: Modeled constraints catch structural and allowed-value errors earlier than device trial-and-error.

Question 529

A team does not apply the necessary control or correction. A source-of-truth generator sends invalid VLAN IDs to multiple switches because device limits were never represented in its data model. Which resulting failure or risk is most directly relevant?

  1. Bulk-pushing malformed values may cause partial failures and config drift.
  2. Misusing imperative provisioners as core state management makes drift and retries difficult.
  3. Removing the guard can make repeated provisioning fail or collide with existing accounts.
  4. Misreading the loop as device provisioning could lead an analyst to trust an irrelevant count.

Explanation

Correct Answer

A:

Bulk-pushing malformed values may cause partial failures and config drift. This is the direct exposure for Validate interface constraints before rollout. Mitigate with: Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes. Check success by: Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration.

Incorrect Answers

B:

Misusing imperative provisioners as core state management makes drift and retries difficult. This risk occurs in the different Terraform versus Ansible responsibilities situation. For the given Validate interface constraints before rollout requirement, the directly relevant risk is: Bulk-pushing malformed values may cause partial failures and config drift.

C:

Removing the guard can make repeated provisioning fail or collide with existing accounts. This risk occurs in the different Bash user creation guarded by id situation. For the given Validate interface constraints before rollout requirement, the directly relevant risk is: Bulk-pushing malformed values may cause partial failures and config drift.

D:

Misreading the loop as device provisioning could lead an analyst to trust an irrelevant count. This risk occurs in the different Interpret Meraki Python client count workflow situation. For the given Validate interface constraints before rollout requirement, the directly relevant risk is: Bulk-pushing malformed values may cause partial failures and config drift.

Question 530

The initial implementation fails or does not meet the expected behavior. A source-of-truth generator sends invalid VLAN IDs to multiple switches because device limits were never represented in its data model. Which investigation should be prioritized to diagnose the problem?

  1. Inspect schema mandatory statements, validation path and returned error.
  2. Inspect service facts, task parameters and service manager status.
  3. Inspect data-model range definitions, validation error and device commit history.
  4. Inspect the declared leaf-list type and encoded JSON or XML representation.

Explanation

Correct Answer

C:

Inspect data-model range definitions, validation error and device commit history. These are the relevant initial evidence checks for Validate interface constraints before rollout. Intended action: Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes. Expected success condition: Out-of-range VLAN values fail preflight and no target switch receives the invalid configuration.

Incorrect Answers

A:

Inspect schema mandatory statements, validation path and returned error. This investigation primarily applies to Interpret YANG mandatory leaf, not the current Validate interface constraints before rollout problem. Prioritize: Inspect data-model range definitions, validation error and device commit history.

B:

Inspect service facts, task parameters and service manager status. This investigation primarily applies to Ansible service started and enabled, not the current Validate interface constraints before rollout problem. Prioritize: Inspect data-model range definitions, validation error and device commit history.

D:

Inspect the declared leaf-list type and encoded JSON or XML representation. This investigation primarily applies to Interpret YANG leaf-list of DNS servers, not the current Validate interface constraints before rollout problem. Prioritize: Inspect data-model range definitions, validation error and device commit history.

DevNet Associate (DEVASC) (200-901) Practice Tests

Purchase Individually

  • Premium File

    431 Questions & Answers
    Last Update: Nov 9, 2026

    $76.99
    $69.99
  • Training Course

    11 Lectures

    $43.99
    $39.99
  • Study Guide

    1212 Pages

    $43.99
    $39.99

SPECIAL OFFER: GET 10% OFF
This is ONE TIME OFFER

You save
10%

Enter Your Email Address to Receive Your 10% Off Discount Code

SPECIAL OFFER: GET 10% OFF

You save
10%

Use Discount Code:

A confirmation link was sent to your e-mail.

Please check your mailbox for a message from support@examlabs.com and follow the directions.

Download Free Demo of VCE Exam Simulator

Experience Avanset VCE Exam Simulator for yourself.

Simply submit your email address below to get started with our interactive software demo of your free trial.

  • Realistic exam simulation and exam editor with preview functions
  • Whole exam in a single file with several different question types
  • Customizable exam-taking mode & detailed score reports