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DevNet Associate (DEVASC) 200-901 Practice Test 40

Question 390

The initial implementation fails or does not meet the expected behavior. A Python utility must list managed network devices from Cisco Catalyst Center after obtaining access credentials. Which investigation should be prioritized to diagnose the problem?

  1. Inspect endpoint identifier, ISE authorization profile and network device enforcement logs.
  2. Inspect endpoint path, auth token exchange, pagination and device response fields.
  3. Inspect host GUID, event type, time filter and API response details.
  4. Inspect NETCONF hello capabilities, edit-config payload and rpc-error elements.

Explanation

Correct Answer

B:

Inspect endpoint path, auth token exchange, pagination and device response fields. These are the relevant initial evidence checks for Get device inventory from Catalyst Center. Intended action: Request the documented device inventory endpoint or supported SDK operation and handle its returned device collection. Expected success condition: The result contains expected device IDs and hostname fields from the authorized site inventory.

Incorrect Answers

A:

Inspect endpoint identifier, ISE authorization profile and network device enforcement logs. This investigation primarily applies to ISE endpoint policy and posture use, not the current Get device inventory from Catalyst Center problem. Prioritize: Inspect endpoint path, auth token exchange, pagination and device response fields.

C:

Inspect host GUID, event type, time filter and API response details. This investigation primarily applies to Secure Endpoint host event triage, not the current Get device inventory from Catalyst Center problem. Prioritize: Inspect endpoint path, auth token exchange, pagination and device response fields.

D:

Inspect NETCONF hello capabilities, edit-config payload and rpc-error elements. This investigation primarily applies to NETCONF edit-config transaction, not the current Get device inventory from Catalyst Center problem. Prioritize: Inspect endpoint path, auth token exchange, pagination and device response fields.

Question 391

A Cisco network automation team has this requirement: A DevNet exercise supplies an existing Webex space ID and asks automation to publish a status notification to that space. Which design or implementation action best addresses it?

  1. POST to the documented Webex messages endpoint with roomId and text in the required request payload.
  2. Use the documented Catalyst Center site assignment workflow with the site and device identifiers.
  3. Initialize the documented SDK client with scoped credentials and call its inventory operation using the supported parameters.
  4. Use the SDK's supported authentication/refresh lifecycle or recreate the authorized client without exposing credentials.

Explanation

Correct Answer

A:

POST to the documented Webex messages endpoint with roomId and text in the required request payload. Technical reason: Webex messages reference a room resource by identifier instead of embedding a human-readable room name only. Verify by: The target space contains one new message from the authorized integration. Deployment qualification: The token must be a member of or otherwise authorized for the destination space.

Incorrect Answers

B:

Use the documented Catalyst Center site assignment workflow with the site and device identifiers. This instead targets the different case Catalyst Center site hierarchy assignment. The described Create Webex message in known space requirement specifically calls for POST to the documented Webex messages endpoint with roomId and text in the required request payload.

C:

Initialize the documented SDK client with scoped credentials and call its inventory operation using the supported parameters. This instead targets the different case Catalyst Center SDK intent client. The described Create Webex message in known space requirement specifically calls for POST to the documented Webex messages endpoint with roomId and text in the required request payload.

D:

Use the SDK's supported authentication/refresh lifecycle or recreate the authorized client without exposing credentials. This instead targets the different case SDK authentication renewal. The described Create Webex message in known space requirement specifically calls for POST to the documented Webex messages endpoint with roomId and text in the required request payload.

Question 392

After deployment, an engineer must prove the proposed solution works. A DevNet exercise supplies an existing Webex space ID and asks automation to publish a status notification to that space. Which observed result is the most direct acceptance evidence?

  1. The response includes the organization's devices across its authorized networks, not only clients on one switch.
  2. The test change runs in the sandbox and production inventory remains untouched.
  3. A change to Gi1 does not alter Gi2 and both values can be retrieved by model path.
  4. The target space contains one new message from the authorized integration.

Explanation

Correct Answer

D:

The target space contains one new message from the authorized integration. Recommended implementation: POST to the documented Webex messages endpoint with roomId and text in the required request payload. Why the observation matters: Webex messages reference a room resource by identifier instead of embedding a human-readable room name only.

Incorrect Answers

A:

The response includes the organization's devices across its authorized networks, not only clients on one switch. That observation could confirm Meraki organization versus device endpoint scope, not the current Create Webex message in known space case. For this case, the decisive observation is: The target space contains one new message from the authorized integration.

B:

The test change runs in the sandbox and production inventory remains untouched. That observation could confirm DevNet sandbox for destructive lab tests, not the current Create Webex message in known space case. For this case, the decisive observation is: The target space contains one new message from the authorized integration.

C:

A change to Gi1 does not alter Gi2 and both values can be retrieved by model path. That observation could confirm YANG leaf and list semantics, not the current Create Webex message in known space case. For this case, the decisive observation is: The target space contains one new message from the authorized integration.

Question 393

A developer is explaining the underlying technical behavior. A DevNet exercise supplies an existing Webex space ID and asks automation to publish a status notification to that space. Which principle is most relevant to this case?

  1. Meraki API resource scopes distinguish organizations, networks, devices and clients.
  2. NX-API and RESTCONF are distinct programming interfaces with different request schemas.
  3. Webex messages reference a room resource by identifier instead of embedding a human-readable room name only.
  4. Code Exchange examples demonstrate patterns but API documentation defines the active request contract.

Explanation

Correct Answer

C:

Webex messages reference a room resource by identifier instead of embedding a human-readable room name only. This mechanism explains Create Webex message in known space. Action: POST to the documented Webex messages endpoint with roomId and text in the required request payload. Expected confirmation: The target space contains one new message from the authorized integration.

Incorrect Answers

A:

Meraki API resource scopes distinguish organizations, networks, devices and clients. This relates to Meraki organization versus device endpoint scope. In the current Create Webex message in known space case the operative principle is: Webex messages reference a room resource by identifier instead of embedding a human-readable room name only.

B:

NX-API and RESTCONF are distinct programming interfaces with different request schemas. This relates to NX-OS NX-API JSON command output. In the current Create Webex message in known space case the operative principle is: Webex messages reference a room resource by identifier instead of embedding a human-readable room name only.

D:

Code Exchange examples demonstrate patterns but API documentation defines the active request contract. This relates to Choose API documentation over Code Exchange sample. In the current Create Webex message in known space case the operative principle is: Webex messages reference a room resource by identifier instead of embedding a human-readable room name only.

Question 394

A team does not apply the necessary control or correction. A DevNet exercise supplies an existing Webex space ID and asks automation to publish a status notification to that space. Which resulting failure or risk is most directly relevant?

  1. Treating a list as a scalar can overwrite the wrong modeled instance or produce schema errors.
  2. Sending REST JSON to the NETCONF SSH subsystem will not create a valid RPC exchange.
  3. Using a participant email as a room ID misaddresses or rejects the request.
  4. Manual one-off configuration makes replacement servers inconsistent.

Explanation

Correct Answer

C:

Using a participant email as a room ID misaddresses or rejects the request. This is the direct exposure for Create Webex message in known space. Mitigate with: POST to the documented Webex messages endpoint with roomId and text in the required request payload. Check success by: The target space contains one new message from the authorized integration.

Incorrect Answers

A:

Treating a list as a scalar can overwrite the wrong modeled instance or produce schema errors. This risk occurs in the different YANG leaf and list semantics situation. For the given Create Webex message in known space requirement, the directly relevant risk is: Using a participant email as a room ID misaddresses or rejects the request.

B:

Sending REST JSON to the NETCONF SSH subsystem will not create a valid RPC exchange. This risk occurs in the different NETCONF edit-config transaction situation. For the given Create Webex message in known space requirement, the directly relevant risk is: Using a participant email as a room ID misaddresses or rejects the request.

D:

Manual one-off configuration makes replacement servers inconsistent. This risk occurs in the different UCS Manager service profile automation situation. For the given Create Webex message in known space requirement, the directly relevant risk is: Using a participant email as a room ID misaddresses or rejects the request.

Question 395

The initial implementation fails or does not meet the expected behavior. A DevNet exercise supplies an existing Webex space ID and asks automation to publish a status notification to that space. Which investigation should be prioritized to diagnose the problem?

  1. Inspect CUCM service endpoints, identity permissions and UDS response structure.
  2. Inspect site ID, device UUID, assignment task status and resulting inventory record.
  3. Inspect device feature enablement, endpoint URI, NX-API payload and output structure.
  4. Inspect message JSON, roomId and Webex response status/identity.

Explanation

Correct Answer

D:

Inspect message JSON, roomId and Webex response status/identity. These are the relevant initial evidence checks for Create Webex message in known space. Intended action: POST to the documented Webex messages endpoint with roomId and text in the required request payload. Expected success condition: The target space contains one new message from the authorized integration.

Incorrect Answers

A:

Inspect CUCM service endpoints, identity permissions and UDS response structure. This investigation primarily applies to CUCM UDS directory lookup, not the current Create Webex message in known space problem. Prioritize: Inspect message JSON, roomId and Webex response status/identity.

B:

Inspect site ID, device UUID, assignment task status and resulting inventory record. This investigation primarily applies to Catalyst Center site hierarchy assignment, not the current Create Webex message in known space problem. Prioritize: Inspect message JSON, roomId and Webex response status/identity.

C:

Inspect device feature enablement, endpoint URI, NX-API payload and output structure. This investigation primarily applies to NX-OS NX-API JSON command output, not the current Create Webex message in known space problem. Prioritize: Inspect message JSON, roomId and Webex response status/identity.

Question 396

A Cisco network automation team has this requirement: An operations report must list clients seen on a specific Meraki network during a defined interval, not every organization device. Which design or implementation action best addresses it?

  1. Initialize the documented SDK client with scoped credentials and call its inventory operation using the supported parameters.
  2. Use the supported RESTCONF operational-state resource with the YANG model path and required Accept header.
  3. Address the correct keyed list instance and modify its intended leaf using the model-defined hierarchy.
  4. Call the documented Meraki network-clients endpoint with the network ID and supported time parameters.

Explanation

Correct Answer

D:

Call the documented Meraki network-clients endpoint with the network ID and supported time parameters. Technical reason: Client-observation endpoints report attached endpoints, not the controller's switch/router inventory. Verify by: The response contains client identifiers and last-seen data restricted to the intended network interval. Deployment qualification: Observation windows and client retention limit which historical clients can be returned.

Incorrect Answers

A:

Initialize the documented SDK client with scoped credentials and call its inventory operation using the supported parameters. This instead targets the different case Catalyst Center SDK intent client. The described Retrieve Meraki connected clients from network requirement specifically calls for Call the documented Meraki network-clients endpoint with the network ID and supported time parameters.

B:

Use the supported RESTCONF operational-state resource with the YANG model path and required Accept header. This instead targets the different case IOS XE RESTCONF operational interface state. The described Retrieve Meraki connected clients from network requirement specifically calls for Call the documented Meraki network-clients endpoint with the network ID and supported time parameters.

C:

Address the correct keyed list instance and modify its intended leaf using the model-defined hierarchy. This instead targets the different case YANG leaf and list semantics. The described Retrieve Meraki connected clients from network requirement specifically calls for Call the documented Meraki network-clients endpoint with the network ID and supported time parameters.

Question 397

After deployment, an engineer must prove the proposed solution works. An operations report must list clients seen on a specific Meraki network during a defined interval, not every organization device. Which observed result is the most direct acceptance evidence?

  1. The response contains client identifiers and last-seen data restricted to the intended network interval.
  2. The returned detections reference the intended endpoint and interval while unrelated hosts are excluded.
  3. The new phone object is present in CUCM configuration and the change is auditable.
  4. A valid user lookup returns permitted user-device information without a configuration write.

Explanation

Correct Answer

A:

The response contains client identifiers and last-seen data restricted to the intended network interval. Recommended implementation: Call the documented Meraki network-clients endpoint with the network ID and supported time parameters. Why the observation matters: Client-observation endpoints report attached endpoints, not the controller's switch/router inventory.

Incorrect Answers

B:

The returned detections reference the intended endpoint and interval while unrelated hosts are excluded. That observation could confirm Secure Endpoint host event triage, not the current Retrieve Meraki connected clients from network case. For this case, the decisive observation is: The response contains client identifiers and last-seen data restricted to the intended network interval.

C:

The new phone object is present in CUCM configuration and the change is auditable. That observation could confirm CUCM AXL controlled configuration update, not the current Retrieve Meraki connected clients from network case. For this case, the decisive observation is: The response contains client identifiers and last-seen data restricted to the intended network interval.

D:

A valid user lookup returns permitted user-device information without a configuration write. That observation could confirm CUCM UDS directory lookup, not the current Retrieve Meraki connected clients from network case. For this case, the decisive observation is: The response contains client identifiers and last-seen data restricted to the intended network interval.

Question 398

A developer is explaining the underlying technical behavior. An operations report must list clients seen on a specific Meraki network during a defined interval, not every organization device. Which principle is most relevant to this case?

  1. ACI's APIC provides controller-level policy abstraction for a fabric's endpoint relationships.
  2. Client-observation endpoints report attached endpoints, not the controller's switch/router inventory.
  3. UDS provides user-facing directory and service discovery while AXL targets CUCM administrative configuration tasks.
  4. NETCONF exchanges structured XML RPCs over an authenticated management session.

Explanation

Correct Answer

B:

Client-observation endpoints report attached endpoints, not the controller's switch/router inventory. This mechanism explains Retrieve Meraki connected clients from network. Action: Call the documented Meraki network-clients endpoint with the network ID and supported time parameters. Expected confirmation: The response contains client identifiers and last-seen data restricted to the intended network interval.

Incorrect Answers

A:

ACI's APIC provides controller-level policy abstraction for a fabric's endpoint relationships. This relates to ACI policy endpoint distinction. In the current Retrieve Meraki connected clients from network case the operative principle is: Client-observation endpoints report attached endpoints, not the controller's switch/router inventory.

C:

UDS provides user-facing directory and service discovery while AXL targets CUCM administrative configuration tasks. This relates to CUCM UDS directory lookup. In the current Retrieve Meraki connected clients from network case the operative principle is: Client-observation endpoints report attached endpoints, not the controller's switch/router inventory.

D:

NETCONF exchanges structured XML RPCs over an authenticated management session. This relates to NETCONF edit-config transaction. In the current Retrieve Meraki connected clients from network case the operative principle is: Client-observation endpoints report attached endpoints, not the controller's switch/router inventory.

Question 399

A team does not apply the necessary control or correction. An operations report must list clients seen on a specific Meraki network during a defined interval, not every organization device. Which resulting failure or risk is most directly relevant?

  1. Firewall-rule inventory alone cannot prove what malware an endpoint observed.
  2. Treating a list as a scalar can overwrite the wrong modeled instance or produce schema errors.
  3. Querying organization devices cannot substitute for the clients that those devices observed.
  4. Calling arbitrary guessed methods can fail when SDK object names differ from API endpoint labels.

Explanation

Correct Answer

C:

Querying organization devices cannot substitute for the clients that those devices observed. This is the direct exposure for Retrieve Meraki connected clients from network. Mitigate with: Call the documented Meraki network-clients endpoint with the network ID and supported time parameters. Check success by: The response contains client identifiers and last-seen data restricted to the intended network interval.

Incorrect Answers

A:

Firewall-rule inventory alone cannot prove what malware an endpoint observed. This risk occurs in the different Secure Endpoint host event triage situation. For the given Retrieve Meraki connected clients from network requirement, the directly relevant risk is: Querying organization devices cannot substitute for the clients that those devices observed.

B:

Treating a list as a scalar can overwrite the wrong modeled instance or produce schema errors. This risk occurs in the different YANG leaf and list semantics situation. For the given Retrieve Meraki connected clients from network requirement, the directly relevant risk is: Querying organization devices cannot substitute for the clients that those devices observed.

D:

Calling arbitrary guessed methods can fail when SDK object names differ from API endpoint labels. This risk occurs in the different Catalyst Center SDK intent client situation. For the given Retrieve Meraki connected clients from network requirement, the directly relevant risk is: Querying organization devices cannot substitute for the clients that those devices observed.

Question 400

The initial implementation fails or does not meet the expected behavior. An operations report must list clients seen on a specific Meraki network during a defined interval, not every organization device. Which investigation should be prioritized to diagnose the problem?

  1. Inspect host GUID, event type, time filter and API response details.
  2. Inspect room creation response, roomId in the message payload and message delivery response.
  3. Inspect device feature enablement, endpoint URI, NX-API payload and output structure.
  4. Inspect network ID, time-span parameter, response client fields and pagination.

Explanation

Correct Answer

D:

Inspect network ID, time-span parameter, response client fields and pagination. These are the relevant initial evidence checks for Retrieve Meraki connected clients from network. Intended action: Call the documented Meraki network-clients endpoint with the network ID and supported time parameters. Expected success condition: The response contains client identifiers and last-seen data restricted to the intended network interval.

Incorrect Answers

A:

Inspect host GUID, event type, time filter and API response details. This investigation primarily applies to Secure Endpoint host event triage, not the current Retrieve Meraki connected clients from network problem. Prioritize: Inspect network ID, time-span parameter, response client fields and pagination.

B:

Inspect room creation response, roomId in the message payload and message delivery response. This investigation primarily applies to Webex create space and send message, not the current Retrieve Meraki connected clients from network problem. Prioritize: Inspect network ID, time-span parameter, response client fields and pagination.

C:

Inspect device feature enablement, endpoint URI, NX-API payload and output structure. This investigation primarily applies to NX-OS NX-API JSON command output, not the current Retrieve Meraki connected clients from network problem. Prioritize: Inspect network ID, time-span parameter, response client fields and pagination.

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

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