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DevNet Associate (DEVASC) 200-901 Practice Test 59

Question 580

The initial implementation fails or does not meet the expected behavior. An operator changed a production firewall security group outside the Terraform workflow, and the repository still shows the old rule. Which investigation should be prioritized to diagnose the problem?

  1. Inspect CI job ordering, review approval and pilot switch state.
  2. Inspect parsed show results, test definitions and baseline snapshots.
  3. Inspect plan output, state snapshot and out-of-band change record.
  4. Inspect status line, interface key and the boolean leaf in the returned model.

Explanation

Correct Answer

C:

Inspect plan output, state snapshot and out-of-band change record. These are the relevant initial evidence checks for Detect drift with planned IaC comparison. Intended action: Run a drift-aware plan against current resources and review an approved reconciliation action. Expected success condition: The plan reports the unexpected live rule before any approved apply modifies it.

Incorrect Answers

A:

Inspect CI job ordering, review approval and pilot switch state. This investigation primarily applies to Infrastructure pipeline validate before apply, not the current Detect drift with planned IaC comparison problem. Prioritize: Inspect plan output, state snapshot and out-of-band change record.

B:

Inspect parsed show results, test definitions and baseline snapshots. This investigation primarily applies to pyATS structured network state verification, not the current Detect drift with planned IaC comparison problem. Prioritize: Inspect plan output, state snapshot and out-of-band change record.

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 Detect drift with planned IaC comparison problem. Prioritize: Inspect plan output, state snapshot and out-of-band change record.

Question 581

A Cisco network automation team has this requirement: An engineer SSHes into each lab server and re-runs shell commands that append duplicate DNS lines whenever the script executes. Which design or implementation action best addresses it?

  1. Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation.
  2. Use a suitable declarative Ansible module with desired settings and idempotent repeated runs.
  3. Exercise the topology in CML and use pyATS assertions against simulated routing behavior, alongside playbook syntax checks.
  4. Interpret the OR branch as creating svc_bot only when the id lookup fails.

Explanation

Correct Answer

B:

Use a suitable declarative Ansible module with desired settings and idempotent repeated runs. Technical reason: Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations. Verify by: The second playbook run reports no unnecessary changes and DNS lines remain unique. Deployment qualification: A module's idempotency depends on correct resource identifiers and supported platform behavior.

Incorrect Answers

A:

Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation. This instead targets the different case Desired-state YANG instead of CLI scraping. The described Ansible playbook for idempotent configuration requirement specifically calls for Use a suitable declarative Ansible module with desired settings and idempotent repeated runs.

C:

Exercise the topology in CML and use pyATS assertions against simulated routing behavior, alongside playbook syntax checks. This instead targets the different case CML and pyATS roles in preflight. The described Ansible playbook for idempotent configuration requirement specifically calls for Use a suitable declarative Ansible module with desired settings and idempotent repeated runs.

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 Ansible playbook for idempotent configuration requirement specifically calls for Use a suitable declarative Ansible module with desired settings and idempotent repeated runs.

Question 582

After deployment, an engineer must prove the proposed solution works. An engineer SSHes into each lab server and re-runs shell commands that append duplicate DNS lines whenever the script executes. Which observed result is the most direct acceptance evidence?

  1. The transaction is reported failed and no unauthorized configuration change is claimed.
  2. The second playbook run reports no unnecessary changes and DNS lines remain unique.
  3. An invalid VLAN template fails the preflight gate and never reaches the fleet.
  4. A test directory retains new logs while old matching .log files are removed.

Explanation

Correct Answer

B:

The second playbook run reports no unnecessary changes and DNS lines remain unique. Recommended implementation: Use a suitable declarative Ansible module with desired settings and idempotent repeated runs. Why the observation matters: Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations.

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 Ansible playbook for idempotent configuration case. For this case, the decisive observation is: The second playbook run reports no unnecessary changes and DNS lines remain unique.

C:

An invalid VLAN template fails the preflight gate and never reaches the fleet. That observation could confirm Infrastructure pipeline validate before apply, not the current Ansible playbook for idempotent configuration case. For this case, the decisive observation is: The second playbook run reports no unnecessary changes and DNS lines remain unique.

D:

A test directory retains new logs while old matching .log files are removed. That observation could confirm Bash script conditional cleanup workflow, not the current Ansible playbook for idempotent configuration case. For this case, the decisive observation is: The second playbook run reports no unnecessary changes and DNS lines remain unique.

Question 583

A developer is explaining the underlying technical behavior. An engineer SSHes into each lab server and re-runs shell commands that append duplicate DNS lines whenever the script executes. Which principle is most relevant to this case?

  1. Ansible state: present requests the target resource exist; state: absent requests removal.
  2. The service module controls both immediate state and boot-time enablement.
  3. Network simulation provides a safe environment for examining design behavior before live deployment.
  4. Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations.

Explanation

Correct Answer

D:

Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations. This mechanism explains Ansible playbook for idempotent configuration. Action: Use a suitable declarative Ansible module with desired settings and idempotent repeated runs. Expected confirmation: The second playbook run reports no unnecessary changes and DNS lines remain unique.

Incorrect Answers

A:

Ansible state: present requests the target resource exist; state: absent requests removal. This relates to Ansible package installation state. In the current Ansible playbook for idempotent configuration case the operative principle is: Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations.

B:

The service module controls both immediate state and boot-time enablement. This relates to Ansible service started and enabled. In the current Ansible playbook for idempotent configuration case the operative principle is: Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations.

C:

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 Ansible playbook for idempotent configuration case the operative principle is: Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations.

Question 584

A team does not apply the necessary control or correction. An engineer SSHes into each lab server and re-runs shell commands that append duplicate DNS lines whenever the script executes. Which resulting failure or risk is most directly relevant?

  1. Click-ops provisioning creates inconsistent configuration and weak change history.
  2. Non-idempotent shell scripts accumulate duplicate configuration entries on retries.
  3. Direct per-device edits can be overwritten or create inconsistent centrally managed state.
  4. A green functional test cannot prove credentials are safely handled.

Explanation

Correct Answer

B:

Non-idempotent shell scripts accumulate duplicate configuration entries on retries. This is the direct exposure for Ansible playbook for idempotent configuration. Mitigate with: Use a suitable declarative Ansible module with desired settings and idempotent repeated runs. Check success by: The second playbook run reports no unnecessary changes and DNS lines remain unique.

Incorrect Answers

A:

Click-ops provisioning creates inconsistent configuration and weak change history. This risk occurs in the different Terraform declared state for repeatable sites situation. For the given Ansible playbook for idempotent configuration requirement, the directly relevant risk is: Non-idempotent shell scripts accumulate duplicate configuration entries on retries.

C:

Direct per-device edits can be overwritten or create inconsistent centrally managed state. This risk occurs in the different Controller-level Wi-Fi policy at multiple sites situation. For the given Ansible playbook for idempotent configuration requirement, the directly relevant risk is: Non-idempotent shell scripts accumulate duplicate configuration entries on retries.

D:

A green functional test cannot prove credentials are safely handled. This risk occurs in the different Peer review catches hard-coded credential situation. For the given Ansible playbook for idempotent configuration requirement, the directly relevant risk is: Non-idempotent shell scripts accumulate duplicate configuration entries on retries.

Question 585

The initial implementation fails or does not meet the expected behavior. An engineer SSHes into each lab server and re-runs shell commands that append duplicate DNS lines whenever the script executes. Which investigation should be prioritized to diagnose the problem?

  1. Inspect module name, package name, target hosts and changed status.
  2. Inspect testbed YAML, device aliases and authentication/connection logs.
  3. Inspect YANG schema, desired-state diff, structured device data and repeated-run results.
  4. Inspect playbook module selection, changed flags and resulting configuration.

Explanation

Correct Answer

D:

Inspect playbook module selection, changed flags and resulting configuration. These are the relevant initial evidence checks for Ansible playbook for idempotent configuration. Intended action: Use a suitable declarative Ansible module with desired settings and idempotent repeated runs. Expected success condition: The second playbook run reports no unnecessary changes and DNS lines remain unique.

Incorrect Answers

A:

Inspect module name, package name, target hosts and changed status. This investigation primarily applies to Ansible package installation state, not the current Ansible playbook for idempotent configuration problem. Prioritize: Inspect playbook module selection, changed flags and resulting configuration.

B:

Inspect testbed YAML, device aliases and authentication/connection logs. This investigation primarily applies to Testbed metadata for automated lab connections, not the current Ansible playbook for idempotent configuration problem. Prioritize: Inspect playbook module selection, changed flags and resulting configuration.

C:

Inspect YANG schema, desired-state diff, structured device data and repeated-run results. This investigation primarily applies to Desired-state YANG instead of CLI scraping, not the current Ansible playbook for idempotent configuration problem. Prioritize: Inspect playbook module selection, changed flags and resulting configuration.

Question 586

A Cisco network automation team has this requirement: A team plans to use Terraform to execute all package installations inside already-running hosts while using Ansible to create every VPC and subnet. Which design or implementation action best addresses it?

  1. Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration.
  2. Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation.
  3. Identify the script as a read of modeled interface configuration or state according to the specific resource path.
  4. Interpret the task as ensuring the package is installed on the selected Debian-based hosts.

Explanation

Correct Answer

A:

Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration. Technical reason: Provisioning tools and configuration-management tools have overlapping but different primary abstractions. Verify by: Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases. Deployment qualification: Tool choice must reflect actual provider/module support rather than a rigid vendor rule.

Incorrect Answers

B:

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

C:

Identify the script as a read of modeled interface configuration or state according to the specific resource path. This instead targets the different case Interpret RESTCONF configuration retrieval. The described Terraform versus Ansible responsibilities requirement specifically calls for Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration.

D:

Interpret the task as ensuring the package is installed on the selected Debian-based hosts. This instead targets the different case Ansible package installation state. The described Terraform versus Ansible responsibilities requirement specifically calls for Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration.

Question 587

After deployment, an engineer must prove the proposed solution works. A team plans to use Terraform to execute all package installations inside already-running hosts while using Ansible to create every VPC and subnet. Which observed result is the most direct acceptance evidence?

  1. The transaction is reported failed and no unauthorized configuration change is claimed.
  2. A test directory retains new logs while old matching .log files are removed.
  3. Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.
  4. The router returns the exact interface counter without affecting other devices.

Explanation

Correct Answer

C:

Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases. Recommended implementation: Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration. Why the observation matters: Provisioning tools and configuration-management tools have overlapping but different primary abstractions.

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 Terraform versus Ansible responsibilities case. For this case, the decisive observation is: Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.

B:

A test directory retains new logs while old matching .log files are removed. That observation could confirm Bash script conditional cleanup workflow, not the current Terraform versus Ansible responsibilities case. For this case, the decisive observation is: Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.

D:

The router returns the exact interface counter without affecting other devices. That observation could confirm Device-level interface test outside controller policy, not the current Terraform versus Ansible responsibilities case. For this case, the decisive observation is: Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.

Question 588

A developer is explaining the underlying technical behavior. A team plans to use Terraform to execute all package installations inside already-running hosts while using Ansible to create every VPC and subnet. Which principle is most relevant to this case?

  1. Model-driven automation uses structured schemas and operations to represent intended configuration.
  2. Device APIs expose local state even when no controller owns its management policy.
  3. Provisioning tools and configuration-management tools have overlapping but different primary abstractions.
  4. Sequence loops can represent repeated asynchronous status checks after initial request acceptance.

Explanation

Correct Answer

C:

Provisioning tools and configuration-management tools have overlapping but different primary abstractions. This mechanism explains Terraform versus Ansible responsibilities. Action: Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration. Expected confirmation: Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.

Incorrect Answers

A:

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

B:

Device APIs expose local state even when no controller owns its management policy. This relates to Device-level interface test outside controller policy. In the current Terraform versus Ansible responsibilities case the operative principle is: Provisioning tools and configuration-management tools have overlapping but different primary abstractions.

D:

Sequence loops can represent repeated asynchronous status checks after initial request acceptance. This relates to Sequence diagram 202 job polling loop. In the current Terraform versus Ansible responsibilities case the operative principle is: Provisioning tools and configuration-management tools have overlapping but different primary abstractions.

Question 589

A team does not apply the necessary control or correction. A team plans to use Terraform to execute all package installations inside already-running hosts while using Ansible to create every VPC and subnet. Which resulting failure or risk is most directly relevant?

  1. Bulk-pushing malformed values may cause partial failures and config drift.
  2. Misreading the command can lead to premature deletion or underestimated storage recovery.
  3. Misusing imperative provisioners as core state management makes drift and retries difficult.
  4. An unbounded loop can turn one incorrect policy into an enterprise-wide outage.

Explanation

Correct Answer

C:

Misusing imperative provisioners as core state management makes drift and retries difficult. This is the direct exposure for Terraform versus Ansible responsibilities. Mitigate with: Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration. Check success by: Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.

Incorrect Answers

A:

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

B:

Misreading the command can lead to premature deletion or underestimated storage recovery. This risk occurs in the different Bash script conditional cleanup workflow situation. For the given Terraform versus Ansible responsibilities requirement, the directly relevant risk is: Misusing imperative provisioners as core state management makes drift and retries difficult.

D:

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 Terraform versus Ansible responsibilities requirement, the directly relevant risk is: Misusing imperative provisioners as core state management makes drift and retries difficult.

Question 590

The initial implementation fails or does not meet the expected behavior. A team plans to use Terraform to execute all package installations inside already-running hosts while using Ansible to create every VPC and subnet. Which investigation should be prioritized to diagnose the problem?

  1. Inspect provider resources, Ansible tasks and execution ordering.
  2. Inspect CI job ordering, review approval and pilot switch state.
  3. Inspect iteration source, site allowlist, diff and reviewer approval.
  4. Inspect resource path, HTTP method, module data and the absence of PATCH/PUT/POST.

Explanation

Correct Answer

A:

Inspect provider resources, Ansible tasks and execution ordering. These are the relevant initial evidence checks for Terraform versus Ansible responsibilities. Intended action: Use Terraform for supported provisioning/resource lifecycle and Ansible for suitable guest configuration orchestration. Expected success condition: Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.

Incorrect Answers

B:

Inspect CI job ordering, review approval and pilot switch state. This investigation primarily applies to Infrastructure pipeline validate before apply, not the current Terraform versus Ansible responsibilities problem. Prioritize: Inspect provider resources, Ansible tasks and execution ordering.

C:

Inspect iteration source, site allowlist, diff and reviewer approval. This investigation primarily applies to Review deployment blast radius and rollback, not the current Terraform versus Ansible responsibilities problem. Prioritize: Inspect provider resources, Ansible tasks and execution ordering.

D:

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 Terraform versus Ansible responsibilities problem. Prioritize: Inspect provider resources, Ansible tasks and execution ordering.

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

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