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RestFUL APIs Flashcards

1
Q

MVC

Model
View
Controller

A

חלוקה רעיונית

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2
Q

AJAX

Asynchronous
JavaScript
And
XML

A

AJAX=

היא טכניקה ליצירת יישומי רשת אינטראקטיביים המבוססים על קוד המורץ במסגרת דף HTML בודד, ולא כיישום מרובה דפים, כמקובל בסביבת ה-Web

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3
Q

ASP.NET

A

ASP.NET=

היא טכנולוגית קוד פתוח ליישומי אינטרנט בצד השרת, שפותחה על ידי חברת מיקרוסופט

ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages

ASP.NET משלבת בנוסף טכנולוגיית MVC, שמאפשרת לפתח אפליקציות רשת במהירות ובקלות

ASP.NET MVC – allows for building web pages using the model–view–controller design pattern.

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4
Q

MVC/ Model View Controller

A

MVC/ Model View Controller=

תבנית עיצוב בהנדסת תוכנה המשמשת להפשטת יישום כלשהו

Model מודל
המודל הוא יצוג מסוים של המידע עליו פועל היישום

View תצוגה
ממיר את נתוני המודל לייצוג המאפשר למשתמש לבצע פעולה כלשהי

Controller בקר
תפקידו לעבד ולהגיב לאירועים המתרחשים בתצוגה, כתגובה לפעולה של המשתמש

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5
Q

ASP.NET Web API

API = Application Programming Interface is a

connection between computers or between computer programs.

A

ASP.NET Web API=

A framework for building Web APIs on top of the .NET Framework

Web API=
is an application programming interface for either a web server or a web browser.

A web API that obeys the REST constraints is informally described as RESTful. RESTful web APIs are typically loosely based on HTTP methods to access resources via URL-encoded parameters and the use of JSON or XML to transmit data.

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6
Q

Web API Server side

API = Application Programming Interface is a

connection between computers or between computer programs.

A

Web API Server side=

server-side web API is a programmatic interface defines request–response message system, typically in JSON or XML

exposed via HTTP-based web server

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7
Q

Web API Client side

API = Application Programming Interface is a

connection between computers or between computer programs.

A

Web API Client side=

client-side web API is a programmatic interface to extend functionality within a web browser or other HTTP client

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8
Q

REST

Representational state transfer

A

REST/ Representational state transfer=

software architectural style
that was created to guide the design and development of the architecture for the World Wide Web

A web API that obeys the REST constraints is informally described as RESTful. RESTful web APIs are typically loosely based on HTTP methods to access resources via URL-encoded parameters and the use of JSON or XML to transmit data.

It provides operations (HTTP methods) such as GET, POST, PUT, and DELETE as request,
and response as:
 - 200 = ok
- 404 = server not found
- 500 = error
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9
Q

HTTP methods

request/ response

A

HTTP methods =

Request methods:
GET, POST, PUT, DELETE

Response status codes:
1XX (informational)
2XX (successful) request was successfully received, understood, and accepted
3XX (redirection)
4XX (client error) request contains bad syntax or cannot be fulfilled
5XX (server error) server failed to fulfill an apparently valid request

  • 200 = ok
  • 404 = website not found
  • 500 = server error
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10
Q

HTTP

Hypertext Transfer Protocol

A

HTTP = Hypertext Transfer Protocol =

protocol used to transfer data over the web.

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11
Q

XML

Extensible Markup Language

A

XML=Extensible Markup Language=

markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.

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12
Q

JSON

JavaScript Object Notation

A

JSON - JavaScript Object Notation=

data interchange format
that uses human-readable text to store and transmit data objects,

common data format with a diverse range of functionality in data interchange including communication of web applications with servers

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13
Q

body html

A

body html=

element contains all the contents of an HTML document

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14
Q

HTML= hypertext markup language

A

HTML- hypertext markup language=

a formatting system for displaying material retrieved over the Internet.

is called hypertext markup language because it is a language that allows users to organize, improve the appearance of, and link text with data on the internet

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15
Q

What are the 10 basic HTML tags

A

What are the 10 basic HTML tags=

 This is the root element tag. ...
 ...
 ...
 ...
<h1></h1> ...
<p></p> ...
<a></a> ...
<img>
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16
Q

Basic HTML - What are the types of HTML tags?

Tag Description

A

Basic HTML

Tag Description
Defines the document type

17
Q

Basic HTML - What are the types of HTML tags?

Tag Description

A

Basic HTML

Tag Description
Defines an HTML document

18
Q

Basic HTML - What are the types of HTML tags?

Tag Description

A

Basic HTML

Tag Description
Contains metadata/information for the document

19
Q

Basic HTML - What are the types of HTML tags?

Tag Description

A

Basic HTML

Tag Description
Defines a title for the document

20
Q

Flag variable

A

Flag variable is used as a signal in programming to let the program know that a certain condition has met.

It usually acts as a boolean variable indicating a condition to be either true or false.

21
Q

An event handler, in C#

method //

callback routine//

A

An event handler, in C#

  1. is a method that contains the code
    that gets executed in response
    to a specific event
    that occurs in an application.
  2. is a callback routine that operates asynchronously and handles inputs received into a program (events)
  3. event Handling is the mechanism that controls the event and decides what should happen if an event occurs.

Event handlers are used in graphical user interface (GUI) applications to handle events such as button clicks and menu selections, raised by controls in the user interface

22
Q

How do you raise an event in C#?

A

How do you raise an event in C#?

First you check the event against
a null value
to ensure that the caller has registered with the event, and then you fire the event by specifying the event by name as well as any required parameters as defined by the associated delegate. MyEvent(message);

23
Q

difference between an event and a delegate

A

difference between an event and a delegate

Delegate is a function pointer.

An event is dependent on a delegate and cannot be created without delegates. Event is a wrapper around delegate instance to prevent users of the delegate from resetting the delegate and its invocation list and only allows adding or removing targets from the invocation list

24
Q

Why are delegates used?

A

Why are delegates used?

Delegates allow methods to be passed as parameters.

Delegates can be used to define callback methods.

25
Q

REST API

RESTful web services

Web API
RESTful web APIs

A

REST API=
it is service on the server side that conforms to the constraints of REST architectural style and allows for interaction with RESTful web services.

סדרה של חוקים, הקובעים מה השירות מקבל ומה הוא מחזיר, על איזה פרוטוקול תקשורת הוא עובד ועוד

RESTful web services=
is a lightweight, maintainable, and scalable service that is built on the REST architecture.
Restful Web Service, expose API from your application in a secure, uniform, stateless manner to the calling client.
The underlying protocol for REST is HTTP. REST stands for REpresentational State Transfer.

Web API=
Web API is an application programming interface on WWW

RESTful web APIs=
based on HTTP methods to access resources via URL-encoded parameters and the use of JSON or XML to transmit data.
It provides operations (HTTP methods) such as GET, POST, PUT, and DELETE.

26
Q

RESTful web APIs

REpresentational State Transfer

A

RESTful web APIs=

based on HTTP methods to access resources via URL-encoded parameters and the use of JSON or XML to transmit data.
It provides operations (HTTP methods) such as GET, POST, PUT, and DELETE.

API is an application programming interface
REpresentational State Transfer

27
Q

Web API

A

Web API=

Web API is an Application Programming Interface

28
Q

ADO.NET

ActiveX Data Objects

A

ADO.NET=

ADO is the acronym for ActiveX Data Objects

ADO.NET is a set of classes (a framework) to interact with data sources such as databases and XML files.

NET applications that use ADO.NET to connect to a database, execute commands and retrieve data from the database

29
Q

LINQ

SingleOrDefault

A

SingleOrDefault

The method returns a single specific element of a sequence.

FirstOrDefault returns a first item of potentially multiple (or default if none exists).

30
Q

char[] arr

C#

A

char[] arr

array of pointers

An array of pointers to strings is an array of character pointers where each pointer points to the first character of the string or the base address of the string.

31
Q

Package Manager

A

Package Manager =

מערכת המאפשרת להתקין ספריה בתוך פרויקט
הספריה יכולה לכלול קבצים
DLL-ים
סקריפטים ועוד
לדוט נט יש
NuGet
32
Q

מודל שכבות ע”י

Entity Framework

A

מודל שכבות ע”י
Entity Framework

צרו מההתחלה את כל מודל השכבות 
על המודל לכלול
DAL = 
BLL = 
DTOs =
UI =
33
Q

get

set

A

get / set =

34
Q

decimal? short?

A

decimal? short?

טיפוס נתונים עם סימן שאלה מאפשרים להכניס ערכים של
null

נקראים
Nullable type

35
Q

Functions: ???

public
private
protected

A

Functions:

public
private
protected

36
Q

CORS

Cross-Origin Resource Sharing

A

CORS

Cross-Origin Resource Sharing

is a mechanism that allows restricted resources on a web page to be requested from another domain outside the domain from which the first resource was served.

Domainy.com receives that request and will respond back with either: Access-Control-Allow-Origin: http://domainx.com. Access-Control-Allow-Origin: * (meaning all domains are allowed) An error if the cross-origin requests are not allowed.

Anabel CORS:

  1. Open Internet Information Service (IIS) Manager.
  2. Right click the site you want to enable CORS for and go to Properties.
  3. Change to the HTTP Headers tab.
  4. In the Custom HTTP headers section, click Add.
  5. Enter Access-Control-Allow-Origin as the header name.
  6. Enter * as the header value.
  7. Click Ok twice.

Cовместное использование ресурсов между разными источниками.

Tехнология современных браузеров, которая позволяет предоставить веб-страницам доступ к ресурсам другого домена

Суть технологии CORS:
Есть три домена, позволяющие загрузить ресурсы с сервера Z. Для того, чтобы это стало возможным, веб-серверу Z, который отдает контент, достаточно указать в заголовке ответа Access-Control-Allow-Origin список доверенных доменов: A, B, C. Тогда для страниц этих доменов не будут действовать ограничения принципа одинакового источника на запрашиваемые страницы:
Access-Control-Allow-Origin: A, B, C

Правило ограничения домена:
(Same Origin Policy, в переводе с англ. — «Принцип одинакового источника») — это важная концепция безопасности для некоторых языков программирования на стороне клиента, таких как JavaScript. Политика разрешает сценариям, находящимся на страницах одного сайта, доступ к методам и свойствам друг друга без ограничений, но предотвращает доступ к большинству методов и свойств для страниц на разных сайтах. Одинаковые источники — это источники, у которых совпадают три признака:

  1. домен;
  2. порт;
  3. протокол.
37
Q

Dependency injection

A

Dependency injection=

is a software design pattern. It allows us to develop loosely-coupled code.

Dependency Injection reduces the hard-coded dependencies among your classes by injecting those dependencies at run time instead of design time technically.

38
Q

jQuery

library

A

jQuery =

is a lightweight, “write less, do more”, JavaScript library. The purpose of jQuery is to make it much easier to use JavaScript on your website.

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