Understanding Hypertext Transfer Protocol (HTTP)
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Questions and Answers

What is the purpose of an HTTP request message?

  • To establish a TCP connection between the client and server
  • To send data from the client to the server (correct)
  • To connect the client to an intermediary server
  • To determine the status of the origin server

Which component of an HTTP transaction waits for the client to send a request message?

  • Origin server (correct)
  • Gateways
  • Tunnels
  • Proxies

What is the default port an HTTP server listens on for incoming requests?

  • Port 80 (correct)
  • Port 21
  • Port 8080
  • Port 443

Which protocol does not need to be used by HTTP according to the text?

<p>TCP/IP (A)</p> Signup and view all the answers

What does an HTTP client do to initiate a request?

<p>Send a request message via TCP connection (B)</p> Signup and view all the answers

What is the purpose of a URL in network programming?

<p>To uniquely locate a resource on the Internet (D)</p> Signup and view all the answers

What is the most common HTTP method used on the Web today?

<p>GET (B)</p> Signup and view all the answers

Which HTTP method should not be used for operations that cause side-effects?

<p>POST (B)</p> Signup and view all the answers

What does the HEAD method request from the server?

<p>Response identical to GET without response body (D)</p> Signup and view all the answers

Which HTTP method echoes back the received request?

<p>TRACE (A)</p> Signup and view all the answers

What does the OPTIONS method return from the server?

<p>List of supported HTTP methods (D)</p> Signup and view all the answers

How is GET data typically sent in HTTP requests?

<p>In URL encoded query strings (A)</p> Signup and view all the answers

What is the purpose of the request line in an HTTP request message?

<p>To indicate the type of operation to be performed (B)</p> Signup and view all the answers

In the context of HTTP, what does URI stand for?

<p>Uniform Resource Identifier (D)</p> Signup and view all the answers

Which part of an HTTP request message must end with CRLF (Carriage Return Line Feed)?

<p>Request line and headers (D)</p> Signup and view all the answers

What is the purpose of the Host header in an HTTP request message?

<p>To identify the server being contacted (B)</p> Signup and view all the answers

During a typical HTTP connection, what does the client do after sending a GET request?

<p>Sends a blank line (C)</p> Signup and view all the answers

What is the purpose of the empty line in an HTTP request message?

<p>To indicate the end of the request message (B)</p> Signup and view all the answers

Flashcards

HTTP Request Purpose

To send data from the client to the server

Origin Server Role

The component that waits for the client to send a request message.

Default HTTP Port

Port 80 is the default port an HTTP server listens on for requests.

HTTP Protocol Dependency

HTTP does not necessarily need TCP/IP to function.

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HTTP Client Action

An HTTP client initiates a request by sending a request message via TCP connection.

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Purpose of URL

To uniquely locate a resource on the Internet.

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Common HTTP Method

GET is the most common HTTP method used on the Web today.

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POST Caution

POST method should not be used for operations that cause side-effects.

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HEAD Method Function

The HEAD method requests a response identical to GET without the response body.

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TRACE Method

The TRACE method echoes back the received request to the client.

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OPTIONS Method

The OPTIONS method returns a list of supported HTTP methods from the server.

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GET Data Method

GET data is typically sent in URL encoded query strings.

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Request Line Purpose

Indicates the type of operation to be performed in an HTTP request message.

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URI Meaning

URI stands for Uniform Resource Identifier in the context of HTTP.

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CRLF Requirement

Request line and headers in an HTTP request must end with CRLF (Carriage Return Line Feed).

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Host Header Purpose

The Host header identifies the server being contacted in an HTTP request message.

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Post-GET Action

After sending a GET request, the client sends a blank line.

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Empty Line Function

The empty line in an HTTP request message indicates the end of the request message.

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