Introduction to Hypertext Transfer Protocol (HTTP)
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Questions and Answers

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

  • POST
  • GET (correct)
  • HEAD
  • PUT

    • Which HTTP method is suitable for submitting data to be processed to the identified resource?

  • HEAD
  • POST (correct)
  • GET
  • OPTIONS

    • What does the HEAD method return compared to a GET request?

  • A response identical to GET but without the response body (correct)
  • A request connection to a TCP/IP tunnel
  • The entire content of the response
  • Meta-information from response headers

    • Which HTTP method echoes back the received request for client verification?

    <p>TRACE</p> Signup and view all the answers

    Which of the following HTTP methods should NOT be used for operations that cause side-effects?

    <p>GET</p> Signup and view all the answers

    What is the purpose of the OPTIONS method in HTTP?

    <p>Returns the server-supported HTTP methods</p> Signup and view all the answers

    What does the HTTP/1.1 200 OK message indicate?

    <p>A successful response from the server</p> Signup and view all the answers

    Which component is responsible for identifying resources to be accessed using HTTP?

    <p>Uniform Resource Identifiers (URIs)</p> Signup and view all the answers

    In the context of HTTP, what does a request line typically contain?

    <p>Request method and URI</p> Signup and view all the answers

    What is a mandatory requirement for the end of the request line and headers in the HTTP/1.1 protocol?

    <p>Carriage return</p> Signup and view all the answers

    How does a typical HTTP connection start between a client and a server?

    <p>Client opens a socket to port 80 on the server</p> Signup and view all the answers

    Which header is non-optional in an HTTP/1.1 request message?

    <p>Host header</p> Signup and view all the answers

    Which protocol does HTTP rely on for establishing a connection?

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

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

    <p>Port 80</p> Signup and view all the answers

    What type of request does an HTTP client initiate to establish a connection with the server?

    <p>TCP Connection</p> Signup and view all the answers

    What is the purpose of a URL in the context of HTTP?

    <p>To identify the location of a resource on the Internet</p> Signup and view all the answers

    After receiving an HTTP request, what does the server send back to the client?

    <p>Status line</p> Signup and view all the answers

    What kind of protocol does HTTP presume for its operation?

    <p>Reliable transport protocol</p> Signup and view all the answers

    Study Notes

    HTTP Methods and Requests

    • The most common HTTP method used on the Web today is GET.
    • The POST method is suitable for submitting data to be processed to the identified resource.
    • The HEAD method returns metadata only, without the response body, compared to a GET request.
    • The TRACE method echoes back the received request for client verification.
    • The GET method should not be used for operations that cause side-effects.

    HTTP and Resources

    • The OPTIONS method in HTTP is used to provide information about the HTTP methods supported by a particular resource.
    • The purpose of a URL in the context of HTTP is to identify resources to be accessed.

    HTTP Connection and Request

    • A typical HTTP connection starts between a client and a server with a TCP connection established using the TCP/IP protocol.
    • A request line in HTTP typically contains the request method, request URL, and HTTP version.
    • A mandatory requirement for the end of the request line and headers in the HTTP/1.1 protocol is a blank line.

    HTTP Headers and Server

    • The Host header is non-optional in an HTTP/1.1 request message.
    • HTTP relies on the TCP/IP protocol for establishing a connection.
    • The default port that an HTTP server listens on for incoming requests is 80.
    • An HTTP client initiates a connection with the server using a TCP connection request.

    HTTP Response

    • After receiving an HTTP request, the server sends back an HTTP response message to the client.
    • An HTTP/1.1 200 OK message indicates that the request has been successfully processed.
    • HTTP presumes a connection-oriented, reliable protocol, such as TCP, for its operation.

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    Description

    Explore the basics of the Hypertext Transfer Protocol (HTTP), including the structure of request and response messages, identifying resources using Uniform Resource Identifiers (URIs), and sending requests for specific files or information via HTTP.

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