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DevNet Associate (DEVASC) 200-901 Practice Test 60

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.

Question 591

A Cisco network automation team has this requirement: A script loops through network IDs, calls getNetworkClients for each, and increments a counter for clients with a recent lastSeen value. Which design or implementation action best addresses it?

  1. Identify the script as a per-network client-observation inventory and validate its time-window filter.
  2. Treat the rpc-error as a failed configuration operation and investigate authorization or datastore permissions.
  3. Interpret the task as starting the service now and configuring it to start at boot where supported.
  4. Block merge, revoke any exposed secret, and require reviewer-approved secret injection before release.

Explanation

Correct Answer

A:

Identify the script as a per-network client-observation inventory and validate its time-window filter. Technical reason: Meraki client APIs report observed endpoint activity scoped to networks and time windows. Verify by: Fixture networks yield a total based only on clients seen during the selected interval. Deployment qualification: A client may appear on multiple networks and needs clear counting rules.

Incorrect Answers

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 Interpret Meraki Python client count workflow requirement specifically calls for Identify the script as a per-network client-observation inventory and validate its time-window filter.

C:

Interpret the task as starting the service now and configuring it to start at boot where supported. This instead targets the different case Ansible service started and enabled. The described Interpret Meraki Python client count workflow requirement specifically calls for Identify the script as a per-network client-observation inventory and validate its time-window filter.

D:

Block merge, revoke any exposed secret, and require reviewer-approved secret injection before release. This instead targets the different case Peer review catches hard-coded credential. The described Interpret Meraki Python client count workflow requirement specifically calls for Identify the script as a per-network client-observation inventory and validate its time-window filter.

Question 592

After deployment, an engineer must prove the proposed solution works. A script loops through network IDs, calls getNetworkClients for each, and increments a counter for clients with a recent lastSeen value. Which observed result is the most direct acceptance evidence?

  1. Fixture networks yield a total based only on clients seen during the selected interval.
  2. The final patch targets only pilot sites and demonstrates a safe failure recovery path.
  3. The revised pull request contains no real key and a secret scanner plus peer review passes.
  4. Two independently built test environments show matching expected VPC/subnet/network properties.

Explanation

Correct Answer

A:

Fixture networks yield a total based only on clients seen during the selected interval. Recommended implementation: Identify the script as a per-network client-observation inventory and validate its time-window filter. Why the observation matters: Meraki client APIs report observed endpoint activity scoped to networks and time windows.

Incorrect Answers

B:

The final patch targets only pilot sites and demonstrates a safe failure recovery path. That observation could confirm Review deployment blast radius and rollback, not the current Interpret Meraki Python client count workflow case. For this case, the decisive observation is: Fixture networks yield a total based only on clients seen during the selected interval.

C:

The revised pull request contains no real key and a secret scanner plus peer review passes. That observation could confirm Peer review catches hard-coded credential, not the current Interpret Meraki Python client count workflow case. For this case, the decisive observation is: Fixture networks yield a total based only on clients seen during the selected interval.

D:

Two independently built test environments show matching expected VPC/subnet/network properties. That observation could confirm Terraform declared state for repeatable sites, not the current Interpret Meraki Python client count workflow case. For this case, the decisive observation is: Fixture networks yield a total based only on clients seen during the selected interval.

Question 593

A developer is explaining the underlying technical behavior. A script loops through network IDs, calls getNetworkClients for each, and increments a counter for clients with a recent lastSeen value. Which principle is most relevant to this case?

  1. The service module controls both immediate state and boot-time enablement.
  2. IaC plan compares declared desired state with discovered provider resources and tracked state.
  3. Meraki client APIs report observed endpoint activity scoped to networks and time windows.
  4. find -mtime +7 selects files past the specified age threshold rather than all files.

Explanation

Correct Answer

C:

Meraki client APIs report observed endpoint activity scoped to networks and time windows. This mechanism explains Interpret Meraki Python client count workflow. Action: Identify the script as a per-network client-observation inventory and validate its time-window filter. Expected confirmation: Fixture networks yield a total based only on clients seen during the selected interval.

Incorrect Answers

A:

The service module controls both immediate state and boot-time enablement. This relates to Ansible service started and enabled. In the current Interpret Meraki Python client count workflow case the operative principle is: Meraki client APIs report observed endpoint activity scoped to networks and time windows.

B:

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 Interpret Meraki Python client count workflow case the operative principle is: Meraki client APIs report observed endpoint activity scoped to networks and time windows.

D:

find -mtime +7 selects files past the specified age threshold rather than all files. This relates to Bash script conditional cleanup workflow. In the current Interpret Meraki Python client count workflow case the operative principle is: Meraki client APIs report observed endpoint activity scoped to networks and time windows.

Question 594

A team does not apply the necessary control or correction. A script loops through network IDs, calls getNetworkClients for each, and increments a counter for clients with a recent lastSeen value. Which resulting failure or risk is most directly relevant?

  1. Misreading the state could lead to inaccurate maintenance plans and outage reports.
  2. Click-ops provisioning creates inconsistent configuration and weak change history.
  3. Misreading the loop as device provisioning could lead an analyst to trust an irrelevant count.
  4. Ignoring rpc-error can produce false-success automation logs.

Explanation

Correct Answer

C:

Misreading the loop as device provisioning could lead an analyst to trust an irrelevant count. This is the direct exposure for Interpret Meraki Python client count workflow. Mitigate with: Identify the script as a per-network client-observation inventory and validate its time-window filter. Check success by: Fixture networks yield a total based only on clients seen during the selected interval.

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 Interpret Meraki Python client count workflow requirement, the directly relevant risk is: Misreading the loop as device provisioning could lead an analyst to trust an irrelevant count.

B:

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 Interpret Meraki Python client count workflow requirement, the directly relevant risk is: Misreading the loop as device provisioning could lead an analyst to trust an irrelevant count.

D:

Ignoring rpc-error can produce false-success automation logs. This risk occurs in the different Interpret NETCONF rpc-error response situation. For the given Interpret Meraki Python client count workflow requirement, the directly relevant risk is: Misreading the loop as device provisioning could lead an analyst to trust an irrelevant count.

Question 595

The initial implementation fails or does not meet the expected behavior. A script loops through network IDs, calls getNetworkClients for each, and increments a counter for clients with a recent lastSeen value. Which investigation should be prioritized to diagnose the problem?

  1. Inspect organization/network policy, controller task status and representative AP behavior.
  2. Inspect error-tag, error-message, selected datastore and user role.
  3. Inspect YANG schema, desired-state diff, structured device data and repeated-run results.
  4. Inspect called API method, network IDs, lastSeen comparison and deduplication behavior.

Explanation

Correct Answer

D:

Inspect called API method, network IDs, lastSeen comparison and deduplication behavior. These are the relevant initial evidence checks for Interpret Meraki Python client count workflow. Intended action: Identify the script as a per-network client-observation inventory and validate its time-window filter. Expected success condition: Fixture networks yield a total based only on clients seen during the selected interval.

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 Interpret Meraki Python client count workflow problem. Prioritize: Inspect called API method, network IDs, lastSeen comparison and deduplication behavior.

B:

Inspect error-tag, error-message, selected datastore and user role. This investigation primarily applies to Interpret NETCONF rpc-error response, not the current Interpret Meraki Python client count workflow problem. Prioritize: Inspect called API method, network IDs, lastSeen comparison and deduplication behavior.

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 Interpret Meraki Python client count workflow problem. Prioritize: Inspect called API method, network IDs, lastSeen comparison and deduplication behavior.

Question 596

A Cisco network automation team has this requirement: A Python tool queries APIC for fvAEPg objects and prints tenant, application profile and EPG name; an analyst calls the output a list of physical switch ports. Which design or implementation action best addresses it?

  1. Interpret the sequence as token acquisition followed by an authenticated read-only inventory operation.
  2. Define the supported pyATS testbed inventory with connection details and load it via the standard testbed mechanism.
  3. Interpret the operation as an ACI logical application EPG inventory, not an interface inventory.
  4. Use a modeled desired-state data representation and supported device programmatic interfaces for reconciliation.

Explanation

Correct Answer

C:

Interpret the operation as an ACI logical application EPG inventory, not an interface inventory. Technical reason: ACI endpoint groups are policy objects describing groups of endpoints, not physical access ports. Verify by: The output matches expected EPG names and excludes unrelated leaf interface objects. Deployment qualification: An EPG may span multiple physical locations or bridge domains depending on fabric policy.

Incorrect Answers

A:

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 Interpret ACI EPG membership script requirement specifically calls for Interpret the operation as an ACI logical application EPG inventory, not an interface inventory.

B:

Define the supported pyATS testbed inventory with connection details and load it via the standard testbed mechanism. This instead targets the different case Testbed metadata for automated lab connections. The described Interpret ACI EPG membership script requirement specifically calls for Interpret the operation as an ACI logical application EPG inventory, not an interface inventory.

D:

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 Interpret ACI EPG membership script requirement specifically calls for Interpret the operation as an ACI logical application EPG inventory, not an interface inventory.

Question 597

After deployment, an engineer must prove the proposed solution works. A Python tool queries APIC for fvAEPg objects and prints tenant, application profile and EPG name; an analyst calls the output a list of physical switch ports. Which observed result is the most direct acceptance evidence?

  1. The simulated change yields expected route reachability and no simulated loop under the tested failure cases.
  2. The service is running and its enabled state persists across a normal restart.
  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

D:

The output matches expected EPG names and excludes unrelated leaf interface objects. Recommended implementation: Interpret the operation as an ACI logical application EPG inventory, not an interface inventory. Why the observation matters: ACI endpoint groups are policy objects describing groups of endpoints, not physical access ports.

Incorrect Answers

A:

The simulated change yields expected route reachability and no simulated loop under the tested failure cases. That observation could confirm Cisco Modeling Labs topology before production change, not the current Interpret ACI EPG membership script case. For this case, the decisive observation is: The output matches expected EPG names and excludes unrelated leaf interface objects.

B:

The service is running and its enabled state persists across a normal restart. That observation could confirm Ansible service started and enabled, not the current Interpret ACI EPG membership script case. For this case, the decisive observation is: The output matches expected EPG names and excludes unrelated leaf interface objects.

C:

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 Interpret ACI EPG membership script case. For this case, the decisive observation is: The output matches expected EPG names and excludes unrelated leaf interface objects.

Question 598

A developer is explaining the underlying technical behavior. A Python tool queries APIC for fvAEPg objects and prints tenant, application profile and EPG name; an analyst calls the output a list of physical switch ports. Which principle is most relevant to this case?

  1. Controller-level management applies abstract policy across centrally managed devices.
  2. Code review evaluates security, maintainability and intent beyond whether code executes.
  3. ACI endpoint groups are policy objects describing groups of endpoints, not physical access ports.
  4. Network simulation provides a safe environment for examining design behavior before live deployment.

Explanation

Correct Answer

C:

ACI endpoint groups are policy objects describing groups of endpoints, not physical access ports. This mechanism explains Interpret ACI EPG membership script. Action: Interpret the operation as an ACI logical application EPG inventory, not an interface inventory. Expected confirmation: The output matches expected EPG names and excludes unrelated leaf interface objects.

Incorrect Answers

A:

Controller-level management applies abstract policy across centrally managed devices. This relates to Controller-level Wi-Fi policy at multiple sites. In the current Interpret ACI EPG membership script case the operative principle is: ACI endpoint groups are policy objects describing groups of endpoints, not physical access ports.

B:

Code review evaluates security, maintainability and intent beyond whether code executes. This relates to Peer review catches hard-coded credential. In the current Interpret ACI EPG membership script case the operative principle is: ACI endpoint groups are policy objects describing groups of endpoints, not physical access ports.

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 Interpret ACI EPG membership script case the operative principle is: ACI endpoint groups are policy objects describing groups of endpoints, not physical access ports.

Question 599

A team does not apply the necessary control or correction. A Python tool queries APIC for fvAEPg objects and prints tenant, application profile and EPG name; an analyst calls the output a list of physical switch ports. Which resulting failure or risk is most directly relevant?

  1. Misreading arrows can cause a script to query inventory before obtaining credentials.
  2. Bulk-pushing malformed values may cause partial failures and config drift.
  3. Treating EPG inventory as leaf-port inventory leads to incorrect topology mapping.
  4. Querying an unrelated controller could give incomplete or stale device state.

Explanation

Correct Answer

C:

Treating EPG inventory as leaf-port inventory leads to incorrect topology mapping. This is the direct exposure for Interpret ACI EPG membership script. Mitigate with: Interpret the operation as an ACI logical application EPG inventory, not an interface inventory. Check success by: The output matches expected EPG names and excludes unrelated leaf interface objects.

Incorrect Answers

A:

Misreading arrows can cause a script to query inventory before obtaining credentials. This risk occurs in the different Sequence diagram shows token then inventory situation. For the given Interpret ACI EPG membership script requirement, the directly relevant risk is: Treating EPG inventory as leaf-port inventory leads to incorrect topology mapping.

B:

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 Interpret ACI EPG membership script requirement, the directly relevant risk is: Treating EPG inventory as leaf-port inventory leads to incorrect topology mapping.

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 Interpret ACI EPG membership script requirement, the directly relevant risk is: Treating EPG inventory as leaf-port inventory leads to incorrect topology mapping.

Question 600

The initial implementation fails or does not meet the expected behavior. A Python tool queries APIC for fvAEPg objects and prints tenant, application profile and EPG name; an analyst calls the output a list of physical switch ports. Which investigation should be prioritized to diagnose the problem?

  1. Inspect configuration, plan differences and deployed resource attributes.
  2. Inspect module name, package name, target hosts and changed status.
  3. Inspect APIC class query, dn attributes and object class names.
  4. Inspect YANG schema, desired-state diff, structured device data and repeated-run results.

Explanation

Correct Answer

C:

Inspect APIC class query, dn attributes and object class names. These are the relevant initial evidence checks for Interpret ACI EPG membership script. Intended action: Interpret the operation as an ACI logical application EPG inventory, not an interface inventory. Expected success condition: The output matches expected EPG names and excludes unrelated leaf interface objects.

Incorrect Answers

A:

Inspect configuration, plan differences and deployed resource attributes. This investigation primarily applies to Terraform declared state for repeatable sites, not the current Interpret ACI EPG membership script problem. Prioritize: Inspect APIC class query, dn attributes and object class names.

B:

Inspect module name, package name, target hosts and changed status. This investigation primarily applies to Ansible package installation state, not the current Interpret ACI EPG membership script problem. Prioritize: Inspect APIC class query, dn attributes and object class names.

D:

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 Interpret ACI EPG membership script problem. Prioritize: Inspect APIC class query, dn attributes and object class names.

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