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DevNet Associate (DEVASC) 200-901 Practice Test 63

Question 620

The initial implementation fails or does not meet the expected behavior. A playbook sets ansible.builtin.service name: sshd, state: started, enabled: true; the operator expects only a one-time process start. Which investigation should be prioritized to diagnose the problem?

  1. Inspect organization/network policy, controller task status and representative AP behavior.
  2. Inspect service facts, task parameters and service manager status.
  3. Inspect playbook module selection, changed flags and resulting configuration.
  4. Inspect resource path, HTTP method, module data and the absence of PATCH/PUT/POST.

Explanation

Correct Answer

B:

Inspect service facts, task parameters and service manager status. These are the relevant initial evidence checks for Ansible service started and enabled. Intended action: Interpret the task as starting the service now and configuring it to start at boot where supported. Expected success condition: The service is running and its enabled state persists across a normal restart.

Incorrect Answers

A:

Inspect organization/network policy, controller task status and representative AP behavior. This investigation primarily applies to Controller-level Wi-Fi policy at multiple sites, not the current Ansible service started and enabled problem. Prioritize: Inspect service facts, task parameters and service manager status.

C:

Inspect playbook module selection, changed flags and resulting configuration. This investigation primarily applies to Ansible playbook for idempotent configuration, not the current Ansible service started and enabled problem. Prioritize: Inspect service facts, task parameters and service manager status.

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 Ansible service started and enabled problem. Prioritize: Inspect service facts, task parameters and service manager status.

Question 621

A Cisco network automation team has this requirement: A script uses find "$LOG_DIR" -type f -mtime +7 -name '*.log' -delete and runs nightly; an analyst says it removes all recent logs. Which design or implementation action best addresses it?

  1. Classify the script as a read-only managed-device inventory/health report rather than an interface configuration updater.
  2. Represent multiple valid resolver addresses as entries of the same leaf-list under its parent.
  3. Interpret the script as deleting matching log files older than seven days within the specified directory.
  4. Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes.

Explanation

Correct Answer

C:

Interpret the script as deleting matching log files older than seven days within the specified directory. Technical reason: find -mtime +7 selects files past the specified age threshold rather than all files. Verify by: A test directory retains new logs while old matching .log files are removed. Deployment qualification: Filesystem time semantics and path selection must be validated before production deletion.

Incorrect Answers

A:

Classify the script as a read-only managed-device inventory/health report rather than an interface configuration updater. This instead targets the different case Interpret Catalyst Center device health report. The described Bash script conditional cleanup workflow requirement specifically calls for Interpret the script as deleting matching log files older than seven days within the specified directory.

B:

Represent multiple valid resolver addresses as entries of the same leaf-list under its parent. This instead targets the different case Interpret YANG leaf-list of DNS servers. The described Bash script conditional cleanup workflow requirement specifically calls for Interpret the script as deleting matching log files older than seven days within the specified directory.

D:

Validate intended configuration against a supported YANG/schema and platform capability constraints before applying changes. This instead targets the different case Validate interface constraints before rollout. The described Bash script conditional cleanup workflow requirement specifically calls for Interpret the script as deleting matching log files older than seven days within the specified directory.

Question 622

After deployment, an engineer must prove the proposed solution works. A script uses find "$LOG_DIR" -type f -mtime +7 -name '*.log' -delete and runs nightly; an analyst says it removes all recent logs. Which observed result is the most direct acceptance evidence?

  1. A simulated route-loss test prevents the next deployment stage while a passing test permits it.
  2. Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.
  3. A test directory retains new logs while old matching .log files are removed.
  4. The output matches expected EPG names and excludes unrelated leaf interface objects.

Explanation

Correct Answer

C:

A test directory retains new logs while old matching .log files are removed. Recommended implementation: Interpret the script as deleting matching log files older than seven days within the specified directory. Why the observation matters: find -mtime +7 selects files past the specified age threshold rather than all files.

Incorrect Answers

A:

A simulated route-loss test prevents the next deployment stage while a passing test permits it. That observation could confirm Block a network rollout on failed pyATS checks, not the current Bash script conditional cleanup workflow case. For this case, the decisive observation is: A test directory retains new logs while old matching .log files are removed.

B:

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 Bash script conditional cleanup workflow case. For this case, the decisive observation is: A test directory retains new logs while old matching .log files are removed.

D:

The output matches expected EPG names and excludes unrelated leaf interface objects. That observation could confirm Interpret ACI EPG membership script, not the current Bash script conditional cleanup workflow case. For this case, the decisive observation is: A test directory retains new logs while old matching .log files are removed.

Question 623

A developer is explaining the underlying technical behavior. A script uses find "$LOG_DIR" -type f -mtime +7 -name '*.log' -delete and runs nightly; an analyst says it removes all recent logs. Which principle is most relevant to this case?

  1. Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations.
  2. Code review evaluates security, maintainability and intent beyond whether code executes.
  3. find -mtime +7 selects files past the specified age threshold rather than all files.
  4. Network simulation provides a safe environment for examining design behavior before live deployment.

Explanation

Correct Answer

C:

find -mtime +7 selects files past the specified age threshold rather than all files. This mechanism explains Bash script conditional cleanup workflow. Action: Interpret the script as deleting matching log files older than seven days within the specified directory. Expected confirmation: A test directory retains new logs while old matching .log files are removed.

Incorrect Answers

A:

Ansible modules can enforce desired state rather than blindly repeat imperative shell mutations. This relates to Ansible playbook for idempotent configuration. In the current Bash script conditional cleanup workflow case the operative principle is: find -mtime +7 selects files past the specified age threshold rather than all files.

B:

Code review evaluates security, maintainability and intent beyond whether code executes. This relates to Peer review catches hard-coded credential. In the current Bash script conditional cleanup workflow case the operative principle is: find -mtime +7 selects files past the specified age threshold rather than all files.

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 Bash script conditional cleanup workflow case the operative principle is: find -mtime +7 selects files past the specified age threshold rather than all files.

Question 624

A team does not apply the necessary control or correction. A script uses find "$LOG_DIR" -type f -mtime +7 -name '*.log' -delete and runs nightly; an analyst says it removes all recent logs. Which resulting failure or risk is most directly relevant?

  1. Misreading the state could lead to inaccurate maintenance plans and outage reports.
  2. Misreading the command can lead to premature deletion or underestimated storage recovery.
  3. Inventing per-entry objects conflicts with the modeled schema.
  4. Manual comparison across large CLI transcripts may miss subtle omissions.

Explanation

Correct Answer

B:

Misreading the command can lead to premature deletion or underestimated storage recovery. This is the direct exposure for Bash script conditional cleanup workflow. Mitigate with: Interpret the script as deleting matching log files older than seven days within the specified directory. Check success by: A test directory retains new logs while old matching .log files are removed.

Incorrect Answers

A:

Misreading the state could lead to inaccurate maintenance plans and outage reports. This risk occurs in the different Ansible package installation state situation. For the given Bash script conditional cleanup workflow requirement, the directly relevant risk is: Misreading the command can lead to premature deletion or underestimated storage recovery.

C:

Inventing per-entry objects conflicts with the modeled schema. This risk occurs in the different Interpret YANG leaf-list of DNS servers situation. For the given Bash script conditional cleanup workflow requirement, the directly relevant risk is: Misreading the command can lead to premature deletion or underestimated storage recovery.

D:

Manual comparison across large CLI transcripts may miss subtle omissions. This risk occurs in the different pyATS structured network state verification situation. For the given Bash script conditional cleanup workflow requirement, the directly relevant risk is: Misreading the command can lead to premature deletion or underestimated storage recovery.

Question 625

The initial implementation fails or does not meet the expected behavior. A script uses find "$LOG_DIR" -type f -mtime +7 -name '*.log' -delete and runs nightly; an analyst says it removes all recent logs. Which investigation should be prioritized to diagnose the problem?

  1. Inspect test exit codes, stage dependencies and promotion logs.
  2. Inspect find predicates, quoting and before/after test directory contents.
  3. Inspect schema mandatory statements, validation path and returned error.
  4. Inspect resource path, HTTP method, module data and the absence of PATCH/PUT/POST.

Explanation

Correct Answer

B:

Inspect find predicates, quoting and before/after test directory contents. These are the relevant initial evidence checks for Bash script conditional cleanup workflow. Intended action: Interpret the script as deleting matching log files older than seven days within the specified directory. Expected success condition: A test directory retains new logs while old matching .log files are removed.

Incorrect Answers

A:

Inspect test exit codes, stage dependencies and promotion logs. This investigation primarily applies to Block a network rollout on failed pyATS checks, not the current Bash script conditional cleanup workflow problem. Prioritize: Inspect find predicates, quoting and before/after test directory contents.

C:

Inspect schema mandatory statements, validation path and returned error. This investigation primarily applies to Interpret YANG mandatory leaf, not the current Bash script conditional cleanup workflow problem. Prioritize: Inspect find predicates, quoting and before/after test directory contents.

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 Bash script conditional cleanup workflow problem. Prioritize: Inspect find predicates, quoting and before/after test directory contents.

Question 626

A Cisco network automation team has this requirement: A deployment script checks id svc_bot >/dev/null 2>&1 || useradd svc_bot before installing a service; operations thinks every run creates a duplicate account. Which design or implementation action best addresses it?

  1. Interpret the OR branch as creating svc_bot only when the id lookup fails.
  2. Interpret the sequence as token acquisition followed by an authenticated read-only inventory operation.
  3. Read the structured payload as successfully retrieved disabled configured state, not as a failed HTTP request.
  4. Use a suitable declarative Ansible module with desired settings and idempotent repeated runs.

Explanation

Correct Answer

A:

Interpret the OR branch as creating svc_bot only when the id lookup fails. Technical reason: Shell || executes the right command only when the preceding command exits unsuccessfully. Verify by: A first run creates the missing user; a subsequent run leaves the existing user unchanged. Deployment qualification: The command needs sufficient privileges and a clear service account policy.

Incorrect Answers

B:

Interpret the sequence as token acquisition followed by an authenticated read-only inventory operation. This instead targets the different case Sequence diagram shows token then inventory. The described Bash user creation guarded by id requirement specifically calls for Interpret the OR branch as creating svc_bot only when the id lookup fails.

C:

Read the structured payload as successfully retrieved disabled configured state, not as a failed HTTP request. This instead targets the different case Interpret RESTCONF HTTP 200 resource data. The described Bash user creation guarded by id requirement specifically calls for Interpret the OR branch as creating svc_bot only when the id lookup fails.

D:

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 Bash user creation guarded by id requirement specifically calls for Interpret the OR branch as creating svc_bot only when the id lookup fails.

Question 627

After deployment, an engineer must prove the proposed solution works. A deployment script checks id svc_bot >/dev/null 2>&1 || useradd svc_bot before installing a service; operations thinks every run creates a duplicate account. Which observed result is the most direct acceptance evidence?

  1. A first run creates the missing user; a subsequent run leaves the existing user unchanged.
  2. After execution, nginx package is present and a repeat run usually reports unchanged.
  3. A sample of networks shows consistent guest access policy after the controller operation and local device convergence.
  4. Cloud networks are created reproducibly and hosts receive package/service configuration in distinct phases.

Explanation

Correct Answer

A:

A first run creates the missing user; a subsequent run leaves the existing user unchanged. Recommended implementation: Interpret the OR branch as creating svc_bot only when the id lookup fails. Why the observation matters: Shell || executes the right command only when the preceding command exits unsuccessfully.

Incorrect Answers

B:

After execution, nginx package is present and a repeat run usually reports unchanged. That observation could confirm Ansible package installation state, not the current Bash user creation guarded by id case. For this case, the decisive observation is: A first run creates the missing user; a subsequent run leaves the existing user unchanged.

C:

A sample of networks shows consistent guest access policy after the controller operation and local device convergence. That observation could confirm Controller-level Wi-Fi policy at multiple sites, not the current Bash user creation guarded by id case. For this case, the decisive observation is: A first run creates the missing user; a subsequent run leaves the existing user unchanged.

D:

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 Bash user creation guarded by id case. For this case, the decisive observation is: A first run creates the missing user; a subsequent run leaves the existing user unchanged.

Question 628

A developer is explaining the underlying technical behavior. A deployment script checks id svc_bot >/dev/null 2>&1 || useradd svc_bot before installing a service; operations thinks every run creates a duplicate account. Which principle is most relevant to this case?

  1. Unified diff uses - for lines in the old version only and + for lines in the new version only.
  2. Shell || executes the right command only when the preceding command exits unsuccessfully.
  3. IaC plan compares declared desired state with discovered provider resources and tracked state.
  4. Controller-level management applies abstract policy across centrally managed devices.

Explanation

Correct Answer

B:

Shell || executes the right command only when the preceding command exits unsuccessfully. This mechanism explains Bash user creation guarded by id. Action: Interpret the OR branch as creating svc_bot only when the id lookup fails. Expected confirmation: A first run creates the missing user; a subsequent run leaves the existing user unchanged.

Incorrect Answers

A:

Unified diff uses - for lines in the old version only and + for lines in the new version only. This relates to Unified diff shows removed firewall allowance. In the current Bash user creation guarded by id case the operative principle is: Shell || executes the right command only when the preceding command exits unsuccessfully.

C:

IaC plan compares declared desired state with discovered provider resources and tracked state. This relates to Detect drift with planned IaC comparison. In the current Bash user creation guarded by id case the operative principle is: Shell || executes the right command only when the preceding command exits unsuccessfully.

D:

Controller-level management applies abstract policy across centrally managed devices. This relates to Controller-level Wi-Fi policy at multiple sites. In the current Bash user creation guarded by id case the operative principle is: Shell || executes the right command only when the preceding command exits unsuccessfully.

Question 629

A team does not apply the necessary control or correction. A deployment script checks id svc_bot >/dev/null 2>&1 || useradd svc_bot before installing a service; operations thinks every run creates a duplicate account. Which resulting failure or risk is most directly relevant?

  1. Removing the guard can make repeated provisioning fail or collide with existing accounts.
  2. Reversing diff markers can make reviewers approve the opposite of the intended access change.
  3. Ignoring rpc-error can produce false-success automation logs.
  4. Treating EPG inventory as leaf-port inventory leads to incorrect topology mapping.

Explanation

Correct Answer

A:

Removing the guard can make repeated provisioning fail or collide with existing accounts. This is the direct exposure for Bash user creation guarded by id. Mitigate with: Interpret the OR branch as creating svc_bot only when the id lookup fails. Check success by: A first run creates the missing user; a subsequent run leaves the existing user unchanged.

Incorrect Answers

B:

Reversing diff markers can make reviewers approve the opposite of the intended access change. This risk occurs in the different Unified diff shows removed firewall allowance situation. For the given Bash user creation guarded by id requirement, the directly relevant risk is: Removing the guard can make repeated provisioning fail or collide with existing accounts.

C:

Ignoring rpc-error can produce false-success automation logs. This risk occurs in the different Interpret NETCONF rpc-error response situation. For the given Bash user creation guarded by id requirement, the directly relevant risk is: Removing the guard can make repeated provisioning fail or collide with existing accounts.

D:

Treating EPG inventory as leaf-port inventory leads to incorrect topology mapping. This risk occurs in the different Interpret ACI EPG membership script situation. For the given Bash user creation guarded by id requirement, the directly relevant risk is: Removing the guard can make repeated provisioning fail or collide with existing accounts.

Question 630

The initial implementation fails or does not meet the expected behavior. A deployment script checks id svc_bot >/dev/null 2>&1 || useradd svc_bot before installing a service; operations thinks every run creates a duplicate account. Which investigation should be prioritized to diagnose the problem?

  1. Inspect service facts, task parameters and service manager status.
  2. Inspect APIC class query, dn attributes and object class names.
  3. Inspect exit status, user database and useradd invocation during repeat runs.
  4. Inspect resource path, HTTP method, module data and the absence of PATCH/PUT/POST.

Explanation

Correct Answer

C:

Inspect exit status, user database and useradd invocation during repeat runs. These are the relevant initial evidence checks for Bash user creation guarded by id. Intended action: Interpret the OR branch as creating svc_bot only when the id lookup fails. Expected success condition: A first run creates the missing user; a subsequent run leaves the existing user unchanged.

Incorrect Answers

A:

Inspect service facts, task parameters and service manager status. This investigation primarily applies to Ansible service started and enabled, not the current Bash user creation guarded by id problem. Prioritize: Inspect exit status, user database and useradd invocation during repeat runs.

B:

Inspect APIC class query, dn attributes and object class names. This investigation primarily applies to Interpret ACI EPG membership script, not the current Bash user creation guarded by id problem. Prioritize: Inspect exit status, user database and useradd invocation during repeat runs.

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 Bash user creation guarded by id problem. Prioritize: Inspect exit status, user database and useradd invocation during repeat runs.

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

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