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Cisco Certified Network Associate (CCNA) 200-301 Practice Test 77

Question 760

At a retail branch, a network administrator must deploy AI-guided troubleshooting while preventing sensitive config backups from leaking into prompts. During review, someone proposes: "Paste private keys into an unapproved public service to improve response quality." Which technical explanation most directly shows why this proposal does not solve the requirement?

  1. Secrets disclosure creates compromise risk.
  2. Retention depends on the service and its configuration.
  3. Overprivileged tools expand security risk.
  4. Network credentials, IP plans and client information need deliberate handling in AI workflows.

Explanation

Correct Answer

A:

Secrets disclosure creates compromise risk. The effective remedy is to apply data classification, redaction and access control before sharing telemetry or configuration with AI tools.

Incorrect Answers

B:

Retention depends on the service and its configuration. The statement addresses a different mechanism. Here the engineer specifically proposed paste private keys into an unapproved public service to improve response quality; the decisive limitation is that secrets disclosure creates compromise risk.

C:

API permissions should be narrowly scoped; disabling network-API authentication is a separate risk from exposing sensitive prompts to an AI service.

D:

Network credentials, IP plans and client information need deliberate handling in AI workflows. A true general network fact is not necessarily the direct diagnosis. The named change was paste private keys into an unapproved public service to improve response quality, whose relevant defect is that secrets disclosure creates compromise risk.

Question 761

At a warehouse, an implementation partner has a REST controller endpoint /api/v1/devices/851; an inventory script needs to read its current state without changing it. Which HTTP method/request is appropriate?

  1. DELETE /api/v1/devices/851
  2. POST /api/v1/devices/851 with a new device payload
  3. PATCH /api/v1/devices/851 to change fields
  4. GET /api/v1/devices/851

Explanation

Correct Answer

D:

HTTP GET retrieves the current representation of resource /api/v1/devices/851 without intending to modify it. Authentication/authorization are still required by the API policy.

Incorrect Answers

A:

DELETE attempts to remove the resource, which violates the read-only requirement.

B:

POST generally creates/submits data rather than being the ordinary read-only retrieval method.

C:

PATCH partially updates resource fields and is a write operation.

Question 762

At an airport terminal, the security and networking lead is adding a new controller resource to collection /api/v1/sites using the documented REST create endpoint. Which HTTP operation is appropriate?

  1. HEAD /api/v1/sites to submit the complete new configuration.
  2. POST /api/v1/sites with a JSON body representing the new resource.
  3. DELETE /api/v1/sites to create a new resource.
  4. GET /api/v1/sites with a JSON payload to create a resource.

Explanation

Correct Answer

B:

POST to a collection path such as /api/v1/sites is a common REST create operation, subject to the API contract and response codes.

Incorrect Answers

A:

HEAD retrieves headers without a response body and is not a standard create method.

C:

DELETE removes a resource or collection rather than creates one.

D:

GET retrieves data and should not be relied upon to create a resource through a request body.

Question 763

At a distribution center, the infrastructure lead wants to update only the description and site tag on REST resource /api/v1/routes/145. Which documented HTTP operation matches the partial update?

  1. PATCH /api/v1/routes/145 with the two fields to modify.
  2. DELETE /api/v1/routes/145 followed by no create action.
  3. GET /api/v1/routes/145 and expect it to update the fields automatically.
  4. OPTIONS /api/v1/routes/145 as the mandatory field update request.

Explanation

Correct Answer

A:

PATCH applies a partial change to an existing resource when the controller API supports it. The body should contain the intended fields for /api/v1/routes/145.

Incorrect Answers

B:

DELETE removes the object rather than implementing a targeted partial update.

C:

GET is safe retrieval and does not change configured fields merely because an application reads them.

D:

OPTIONS inspects supported methods/capabilities and is not the normal update operation.

Question 764

At a logistics provider, the infrastructure lead needs to remove obsolete REST resource /api/v1/routes/533 after an approved decommissioning change. Which HTTP method expresses deletion?

  1. PATCH /api/v1/routes/533 with an empty body and assume deletion is automatic.
  2. POST /api/v1/routes/533 with a query string read=true and expect object removal.
  3. GET /api/v1/routes/533 as a deletion command.
  4. DELETE /api/v1/routes/533 after validating authorization and dependency impact.

Explanation

Correct Answer

D:

DELETE expresses a request to remove resource /api/v1/routes/533; the API may still enforce authorization, concurrency and dependency checks.

Incorrect Answers

A:

An empty PATCH body does not semantically request deletion of the object.

B:

POST may invoke API-specific operations, but is not a generic REST deletion method without an explicit contract.

C:

GET is not supposed to change server resource state.

Question 765

At a media studio, the site engineer sends an API request to /api/v1/interfaces/320 and receives 401, while another authenticated but underprivileged user receives 403. Which interpretation is correct?

  1. HTTP 403 means the server returned a created resource with status Created.
  2. HTTP 401 means the JSON data structure must have been accepted successfully.
  3. An HTTP 401 response indicates missing or invalid authentication, whereas 403 indicates an authenticated request lacks permission.
  4. HTTP 201 means an unauthenticated request must be blocked by authorization.

Explanation

Correct Answer

C:

401 is an authentication challenge/unauthorized status and 403 means forbidden access; exact handling follows the API security contract.

Incorrect Answers

A:

403 signals forbidden operation, not created success; created responses often use 201.

B:

401 does not indicate successful payload processing.

D:

201 is typically a successful resource creation response, not proof of rejection.

Question 766

At a design agency, a network administrator is writing a Python client to change network controller state through /api/v1/devices. Which request-handling practice is sound?

  1. Treat the HTTP status code as an Ethernet VLAN ID rather than a response outcome.
  2. Use a supported bearer token or other documented authentication scheme and send/parse JSON with the correct Content-Type.
  3. Use an unauthenticated request and assume no API endpoint checks identity.
  4. Place the administrative password in the URL query string and disable HTTPS.

Explanation

Correct Answer

B:

REST clients must follow documented authentication and JSON encoding conventions; over HTTPS credentials and content can be protected in transit.

Incorrect Answers

A:

HTTP response codes convey application request outcomes, not switch VLAN assignments.

C:

Management APIs typically enforce authentication/authorization and should not be assumed open.

D:

URL-based secrets can leak in logs and disabling TLS exposes credentials.

Question 767

At a public library, a network administrator has a REST controller endpoint /api/v1/routes/808; an inventory script needs to read its current state without changing it. Which HTTP method/request is appropriate?

  1. GET /api/v1/routes/808
  2. PATCH /api/v1/routes/808 to change fields
  3. POST /api/v1/routes/808 with a new device payload
  4. DELETE /api/v1/routes/808

Explanation

Correct Answer

A:

HTTP GET retrieves the current representation of resource /api/v1/routes/808 without intending to modify it. Authentication/authorization are still required by the API policy.

Incorrect Answers

B:

PATCH partially updates resource fields and is a write operation.

C:

POST generally creates/submits data rather than being the ordinary read-only retrieval method.

D:

DELETE attempts to remove the resource, which violates the read-only requirement.

Question 768

At a bank branch, a network operations engineer is adding a new controller resource to collection /api/v1/routes using the documented REST create endpoint. Which HTTP operation is appropriate?

  1. HEAD /api/v1/routes to submit the complete new configuration.
  2. GET /api/v1/routes with a JSON payload to create a resource.
  3. POST /api/v1/routes with a JSON body representing the new resource.
  4. DELETE /api/v1/routes to create a new resource.

Explanation

Correct Answer

C:

POST to a collection path such as /api/v1/routes is a common REST create operation, subject to the API contract and response codes.

Incorrect Answers

A:

HEAD retrieves headers without a response body and is not a standard create method.

B:

GET retrieves data and should not be relied upon to create a resource through a request body.

D:

DELETE removes a resource or collection rather than creates one.

Question 769

At a nonprofit organization, the security and networking lead wants to update only the description and site tag on REST resource /api/v1/sites/791. Which documented HTTP operation matches the partial update?

  1. OPTIONS /api/v1/sites/791 as the mandatory field update request.
  2. DELETE /api/v1/sites/791 followed by no create action.
  3. GET /api/v1/sites/791 and expect it to update the fields automatically.
  4. PATCH /api/v1/sites/791 with the two fields to modify.

Explanation

Correct Answer

D:

PATCH applies a partial change to an existing resource when the controller API supports it. The body should contain the intended fields for /api/v1/sites/791.

Incorrect Answers

A:

OPTIONS inspects supported methods/capabilities and is not the normal update operation.

B:

DELETE removes the object rather than implementing a targeted partial update.

C:

GET is safe retrieval and does not change configured fields merely because an application reads them.

Question 770

A network controller returns ETag `v7` with GET /api/v1/vlans/135. Another administrator may update the VLAN before this client sends a replacement PUT. Which HTTP request safeguard prevents silently overwriting a newer version?

  1. Send `If-None-Match: v7` to force overwriting any existing representation unconditionally.
  2. Use HTTP GET to update the resource so cache intermediaries will automatically serialize writes.
  3. Send a DELETE before every PUT to guarantee that concurrent changes remain intact.
  4. Send `If-Match: v7` with the PUT and handle a precondition failure by fetching the new representation.

Explanation

Correct Answer

D:

A conditional request with `If-Match` requires the server's current ETag to match the version the client read. A changed ETag prevents stale replacement when the API supports this control.

Incorrect Answers

A:

`If-None-Match` is primarily a not-already-present/cache condition and does not express 'only replace if current representation still equals v7'.

B:

GET is a retrieval method and should not be used to change controller state or coordinate concurrent writers.

C:

DELETE can destroy the resource and is not a safe mechanism for preserving changes made by another administrator.

Cisco Certified Network Associate (CCNA) (200-301) Practice Tests

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