350-901 practice questions 291–300

1. Question 291 · 385 in bank

   

   Refer to the exhibit. An Intersight API is being used to query RackUnit resources that have a tag keyword set to `Site`. What is the expected output of this command?

   • Alist of all resources that have a tag with the keyword ג€Siteג€
   • Berror message because the Value field was not specified
   • Cerror message because the tag filter should be lowercase
   • Dlist of all sites that contain RackUnit tagged compute resources

   Show answer

   Answer: A

   Explanation

   A is correct The $filter query option allows clients to retrieve a subset of resources based on some expression. It supports multiple operators to filter managed objects: eq, ne, gt, ge, lt, le, and, or, not, and in operators, as well as a set of string functions (contains, endswith, and so on). Here are a few examples: GET /api/v1/compute/RackUnits?$filter=Name eq 'WZP211704KM' GET /api/v1/compute/RackUnits?$filter=Model ne 'UCSC-C240-M5SN' GET /api/v1/RackUnits?$filter=NumCpuCores ge 6 and AvailableMemory gt 65000 GET /api/v1/RackUnits?$filter=not(Model eq 'HX220C-M5SX' or Model eq 'HX220C-M5S') GET /api/v1/RackUnits?$filter=Model in ('HX220C-M5SX', 'UCSC-C240-M5SN') GET /api/v1/RackUnits?$filter=contains(Model,'C240') GET /api/v1/RackUnits?$filter=endswith(Model,'M5') GET /api/v1/aaa/AuditRecords?$filter=CreateTime gt 2020-06-20T08:00:0.000Z

   Source: Adapted from community discussion — Teringzooi

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2. Question 292 · 385 in bank

   A user is receiving a 429 Too Many Requests error. Which scheme is the server employing that causes this error?

   • Arate limiting
   • Btime outs
   • Ccaching
   • Dredirection

   Show answer

   Answer: A

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3. Question 293 · 385 in bank

   

   Refer to the exhibit. Which line of code must be added to this code snippet to allow an application to pull the next set of paginated items?

   

   • Arequests.get(url, links=['next']['url'])
   • Brequests.get(url, headers=links['next']['url'])
   • Crequests.get(res.links['next']['url'], headers=headers)
   • Drequests.get(res.headers.get('Link')['next']['url'], headers=headers)

   Show answer

   Answer: C

   Explanation

   C is correct: url=response.links["next"]["url"] One method is using the HTTP “Link” header, which provides a list of resources (URLs) and the type of relationship between a resource and the current page, defined in the “rel” parameter. The client can use links and relationships to navigate through the data. The requests library automatically parses “Link” headers and makes them easily consumable as the “links” property of the Response object.

   Source: Adapted from community discussion — designated

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4. Question 294 · 385 in bank

   Select 2

   An ETag header is included in the HTTP response for an API resource. What are two benefits of using the value of the ETag for future interactions involving the same API resource? (Choose two.)

   • Acaching and optimization of response payloads
   • Bcreating conditional requests
   • Ccategorizing and comparing this API resource with others
   • Dchecking the integrity of the resource
   • Erequesting the list of operations authorized for this resource

   Show answer

   Answer: AB

   Explanation

   A B Explanation: • The ETag HTTP response header is an identifier for a specific version of a resource. It lets caches be more efficient and save bandwidth, as a web server does not need to resend a full response if the content has not changed. Additionally, etags help prevent simultaneous updates of a resource from overwriting each other ("mid-air collisions"). • The ETag or entity tag is part of HTTP, the protocol for the World Wide Web. It is one of several mechanisms that HTTP provides for Web cache validation, which allows a client to make conditional requests.

   Source: Adapted from community discussion — blezzzo

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5. Question 295 · 385 in bank

   Select 2

   

   Refer to the exhibit. An application uses an API to periodically sync a large data set. Based on the HTTP message sequence provided, which statements are true about the caching behavior seen in the scenario? (Choose two.)

   • AThe full dataset was transmitted to the client twice.
   • BThe dataset changed sometime between message #4 and #5.
   • CA partial dataset was transmitted to the client in message #4.
   • DThe dataset did not change during the scenario.
   • EMessages #3 and #5 are equivalent.

   Show answer

   Answer: AD

   Explanation

   A and D here are correct. Explanation: The HTTP 304 Not Modified client redirection response code indicates that there is no need to retransmit the requested resources. It is an implicit redirection to a cached resource. This happens when the request method is safe, like a GET or a HEAD request, or when the request is conditional and uses a If-None-Match or a If-Modified-Since header. The equivalent 200 OK response would have included the headers Cache-Control, Content-Location, Date, ETag, Expires, and Vary. Each time the resource is updated on the server, the ETag header will be changed to reflect the content of the new version of the resource. The Etag value does not change all through the transaction between client and server confirming A and D as the answers here.

   Source: Adapted from community discussion — blezzzo

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6. Question 296 · 385 in bank

   DRAG DROP -

   

   Refer to the exhibit. Drag and drop the code snippets from the left onto the item numbers on the right that match the missing sections in the cURL exhibit to complete the cURL request to FirePower Device Manager API to create objects. Not all code snippets are used. Select and Place:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   curl -X POST --header 'Content-Type: application/json' \ --header 'Accept: application/json' -d '{ \ "name": "new_network_object", \ "description": "A subnet object created using the REST API.", \ "subType": "NETWORK", \ "value": "10.100.10.0/24", \ "type": "networkobject" \ }' 'https://ftd.example.com/api/fdm/latest/object/networks' https://www.cisco.com/c/en/us/td/docs/security/firepower/ftd-api/guide/ftd-rest-api/ftd-api-methods.html#task_14BAEBFFEB594B62968A3DF2B86F6FF5

   Source: Adapted from community discussion — romanknet

   References

   • Cisco documentation

   

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7. Question 297 · 385 in bank

   An organization manages a large cloud-deployed application that employs a microservices architecture. No notable issues occur with downtime because the services of this application are redundantly deployed over three or more data center regions. However, several times a week reports are received about application slowness. The container orchestration logs show faults in a variety of containers that cause them to fail and then spin up brand new. Which action must be taken to improve the resiliency design of the application while maintaining current scale?

   • AUpdate the base image of the containers.
   • BTest the execution of the application with another cloud services platform.
   • CIncrease the number of containers running per service.
   • DAdd consistent ג€try/catch(exception)ג€ clauses to the code.

   Show answer

   Answer: D

   Explanation

   Believe D is right. Above the issue is not with the availability, but with the app's performance. Changing the base image of the containers, changing the cloud services platform, or simply increasing the number of containers may not address the root cause. Adding proper "try/catch(exception)" clauses allows the application to handle exceptions gracefully, which can prevent a full container crash and mitigate performance issues caused by the overhead of spinning up new containers.

   Source: Adapted from community discussion — blurain

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8. Question 298 · 385 in bank

   Which RFC5988 (Web Linking) relation type is used in the Link header to control pagination in APIs?

   • Arel=ג€indexג€
   • Brel=ג€pageג€
   • Crel=ג€nextג€
   • Drel=ג€sectionג€

   Show answer

   Answer: C

   References

   • RFC Editor
   • Google developer documentation

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9. Question 299 · 385 in bank

   A client is written that uses a REST API to interact with a server. Using HTTPS as the transport, an HTTP request is sent and received an HTTP response. The response contains the HTTP response status code: 503 Service Unavailable. Which action is the appropriate response?

   • AAdd an Authorization header that supplies appropriate credentials and sends the updated request.
   • BResend the request using HTTP as the transport instead of HTTPS.
   • CAdd an Accept header that indicates the content types that the client understands and send the updated request.
   • DLook for a Retry-After header in the response and resend the request after the amount of time indicated.

   Show answer

   Answer: D

   Explanation

   https://www.rfc-editor.org/rfc/rfc9110.html#name-503-service-unavailable " The 503 (Service Unavailable) status code indicates that the server is currently unable to handle the request due to a temporary overload or scheduled maintenance, which will likely be alleviated after some delay. The server MAY send a Retry-After header field (Section 10.2.3) to suggest an appropriate amount of time for the client to wait before retrying the request. Note: The existence of the 503 status code does not imply that a server has to use it when becoming overloaded. Some servers might simply refuse the connection. "

   Source: Adapted from community discussion — kirrim

   References

   • RFC Editor

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10. Question 300 · 385 in bank

    

    Refer to the exhibit. Two editors are concurrently updating an article's headline from their mobile devices. What results from this scenario based on this REST API sequence?

    • AThe article is marked as ג€Conflictedג€
    • BThe article headline is ג€Monday Headlinesג€
    • CThe article headline is ג€Today Headlinesג€
    • DThe article headline is ג€Top Headlinesג€

    Show answer

    Answer: D

    Explanation

    The correct answer is D. Client1 - GET and API Service return the ETag ed5 with the title Monday Headlines Client2 - GET and API Service return the ETag ed5 with the title Monday Headlines Client1 - PUT the title from Monday Headlines to Top Headlines and received 200 with a new ETag 980f - It's meaning that the title has been changed and the ETag has been updated. Client2 - Try to change the title using the old ETag ed5 and receives 412 which means "Precondition Failed" since the ETag has changed.

    Source: Adapted from community discussion — designated

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350-901 practice, question 291. 385 questions available.