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(MS) REST API > General > Flashcards

General Flashcards

1
Q

What does REST stand for?

A

Representational State Transfer

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2
Q

What is a REST API?

A

An API that conforms to the constraints of the REST architectural style and allows for interaction with RESTful web services.

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3
Q

What are the main HTTP methods used in REST?

A

GET, POST, PUT, DELETE, PATCH

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4
Q

What is the purpose of the GET method?

A

To retrieve data from a server.

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5
Q

What does the POST method do?

A

To send data to a server to create a new resource.

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6
Q

When is the PUT method used?

A

To update an existing resource or create it if it does not exist.

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7
Q

What is the DELETE method used for?

A

To remove a resource from the server.

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8
Q

What is the PATCH method?

A

To apply partial modifications to a resource.

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9
Q

What is a resource in REST?

A

An object or representation of something that can be accessed or manipulated via a URL.

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10
Q

What is an endpoint in REST?

A

A specific URL where a resource can be accessed or an action can be performed.

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11
Q

What is meant by statelessness in REST?

A

Each request from client to server must contain all the information needed to understand and process the request, without relying on any stored context on the server.

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12
Q

What is JSON?

A

JavaScript Object Notation, a lightweight data-interchange format used in REST APIs for data representation.

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13
Q

What is the role of HTTP headers in REST APIs?

A

They convey additional information about the request or response, such as content type, authentication tokens, and caching directives.

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14
Q

What does the status code 200 mean?

A

OK - The request has succeeded.

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15
Q

What does the status code 404 signify?

A

Not Found - The server can’t find the requested resource.

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16
Q

What is HATEOAS?

A

Hypermedia As The Engine Of Application State, a constraint of REST that ensures clients interact with the application entirely through provided hypermedia links.

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17
Q

What is CORS?

A

Cross-Origin Resource Sharing, a security feature implemented by browsers to control how resources on a web page can be requested from another domain.

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18
Q

What does idempotent mean in the context of REST methods?

A

An operation that can be applied multiple times without changing the result beyond the initial application. Examples are GET, PUT, and DELETE.

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19
Q

What is a RESTful web service?

A

A web service that adheres to the REST architectural constraints and principles.

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20
Q

What is URI?

A

Uniform Resource Identifier, a string of characters that unambiguously identifies a particular resource.

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21
Q

What does CRUD stand for in the context of REST?

A

Create, Read, Update, Delete

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22
Q

What is an API key?

A

A unique identifier used to authenticate a client making API requests.

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23
Q

What is OAuth?

A

An open standard for access delegation commonly used to grant websites or applications limited access to a user’s information without exposing passwords.

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24
Q

What is the purpose of the OPTIONS HTTP method?

A

To describe the communication options for the target resource.

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25
Q

What is an HTTP request?

A

A message sent by a client to initiate an action on the server.

26
Q

What is an HTTP response?

A

A message sent by the server back to the client following an HTTP request.

27
Q

What is a REST client?

A

A client that interacts with a RESTful web service.

28
Q

What is the role of a REST API documentation?

A

To provide detailed information on how to use the API, including available endpoints, request formats, response formats, and error codes.

29
Q

What does the status code 201 indicate?

A

Created - The request has been fulfilled and has resulted in the creation of a new resource.

30
Q

What does the status code 401 signify?

A

Unauthorized - The request requires user authentication.

31
Q

What does the status code 500 mean?

A

Internal Server Error - A generic error message when the server encounters an unexpected condition.

32
Q

What is the difference between PUT and PATCH?

A

PUT replaces the entire resource, while PATCH applies partial updates to the resource.

33
Q

What is rate limiting in REST APIs?

A

A technique to control the amount of incoming requests to a server within a given time frame.

34
Q

What is an API endpoint?

A

A specific path where API interactions occur, usually a URL mapping to a specific resource or action.

35
Q

What is JSON schema?

A

A vocabulary that allows you to annotate and validate JSON documents.

36
Q

What is meant by ‘representation’ in REST?

A

The format in which a resource is presented, often as JSON or XML.

37
Q

What does the status code 204 indicate?

A

No Content - The server successfully processed the request and is not returning any content.

38
Q

What is an HTTP status code?

A

A code returned by the server to indicate the result of the HTTP request.

39
Q

What is content negotiation in REST?

A

A mechanism that allows the client and server to agree on the content format for the response.

40
Q

What is the purpose of the HEAD HTTP method?

A

To retrieve the headers of a resource without the body, similar to a GET request.

41
Q

What is RESTful routing?

A

The practice of structuring URLs to represent resources and actions in a RESTful API.

42
Q

What is a resource identifier?

A

A unique value used to identify a specific resource, often a URI.

43
Q

What is the role of HTTP methods in REST?

A

They define the action to be performed on a resource, such as retrieving, creating, updating, or deleting it.

44
Q

What is an HTTP request body?

A

The part of an HTTP request that contains the data being sent to the server.

45
Q

What does the status code 403 signify?

A

Forbidden - The server understood the request but refuses to authorize it.

46
Q

What is REST API versioning?

A

A method to manage changes to the API over time, allowing different versions to coexist.

47
Q

What does the status code 409 indicate?

A

Conflict - The request could not be processed because of conflict in the request, such as an edit conflict.

48
Q

What is hypermedia in REST?

A

Links within the returned resources that guide the client on how to interact with the API further.

49
Q

What is a RESTful architecture?

A

An architectural style that uses standard HTTP methods and stateless communication to interact with resources.

50
Q

What is the difference between REST and SOAP?

A

REST is a simpler, more flexible architectural style using standard HTTP methods, while SOAP is a protocol with more rigid standards and built-in security and transaction compliance.

51
Q

What is an API gateway?

A

A server that acts as an API front-end, handling requests, transformations, and other services.

52
Q

What does the status code 202 mean?

A

Accepted - The request has been accepted for processing, but the processing has not been completed.

53
Q

What is an API rate limit?

A

A restriction placed on the number of API calls a user can make in a given time period.

54
Q

What is an endpoint URL?

A

A specific address (URL) where an API can be accessed by clients.

55
Q

What is a response body in REST?

A

The part of an HTTP response containing the data requested by the client.

56
Q

What is an idempotent operation?

A

An operation that has the same result no matter how many times it is performed.

57
Q

What is the status code 301 used for?

A

Moved Permanently - The resource has been permanently moved to a new URL.

58
Q

What does ‘RESTful’ mean?

A

Conforming to the principles of REST, typically meaning the API is designed to use HTTP methods and URLs in a standard way.

59
Q

What is the status code 400 used for?

A

Bad Request - The server cannot process the request due to client error.

60
Q

What is a web service?

A

A software system designed to support interoperable machine-to-machine interaction over a network.

(MS) REST API (1 decks)

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