The document discusses the World Wide Web (WWW) and compares FTP and HTTP protocols. It provides definitions and histories of WWW, FTP, and HTTP. Some key points are: WWW allows resources and information to be exchanged over the internet using HTTP. It originated as a proposal by Tim Berners-Lee in 1989 and became a vast collection of multimedia resources connected by hyperlinks. FTP transfers files between computers using two connections, while HTTP uses a single connection to transfer web pages, images, and files but does not save them to memory like FTP. Both protocols have advantages for different file transfer needs.

1. WWW
FTP and HTTP
Vijaya priya p
I- Msc (cs)
by

2. www (world wide web)
Definition :
 Resources and the uses on the internet, using
HTTP – hyper text transfer protocal. Is the
universe of network accessible information.
 Way to exchanging information between
computers on the internet ,trying them together
Into a vast collection of interactive
Multimedia resources.

3.  The world wide web is a way of exchanging
Information between computers on the internet
 The world wide web is the network of pages of
Images ,texts , and sounds on the internet which
Can be viewed using browser software.
WHAT IS WORLD WIDE WEB ?

5. Evolution www
 Evolution world wide web was created by
Tim Berners lee in 1989 at CERN in Geneva.
 World wide web came into existence as a
Proposal by him, to allow researchers to work
Together effectively and efficiently at CERN
Eventually it became world wide web.

6. HISTORY OF WWW

7. Version of www
Web 1.0
 Static web pages
 Brochure ware
 Mostly publishing
 No communication
Web 2.0
 Social media
 Keyword research
 Rich user experience
 Tagging
Web 3.0
 Highly mobile
 Open ID
 Semantic search
 Micro blogging

8. www component
 Structural components
 Semantic components
1. Structural components :
 Clients / browsers – to dominant
implementations
 Servers - run on sophisticated hardware
 Caches - many interesting implementations
 Internet - the global infrastructure which
facilitates

9. 2. Semantic components :
 Hyper text transfer protocol (HTTP)
 Hyper text markup language (HTML)
 Extensible markup language (XML)
 Uniform resource identifiers (URIs)

10. Fundamental concept of the
World wide web :

12. advantages
 Mainly free information
 Low cost of initial connection
 Accessible from anywhere
 Rapid interactive communication
disadvantages
 Danger of overload and excess
information
 No quality control over available data
 No regulation

13. FTP and HTTP

14. FTP (file Transfer protocal)
The standard protocol is used to transfer
Files between computers and servers over a
network.
It is an internal standard that allows the
process of file downloading and uploading on
Different types of files (text, graphics, videos,
Images, etc..)
It was developed when security was not a big
issue. It is older and being replaced with new
Protocols.
Its stands for file transfer protocol.

15.  ftp supports two separate transmission
Control connection or command port(port 21)
To authenticate the user and second one is
Data connection or data port(port 20) to
transfer the files.
 It requires a username and password for
access .
Control and data connection

16.  It is the set of rules that permit the downloading
And uploading the files on the computer over
The internet.
 The URL using FTP will start FTP.
 It is efficient in transferring large files.

17. history

18. features
 ftp operates in a client/server environment,
Meaning that the remote machine is configured
As a server, and consequently waits for the other
Machine (client) to request a service from it.
 In UNIX , the service is provided by what is
called
A daemon, a small task that runs in the background
the FTP daemon is called ftpd.
 ftp allows files to have ownership and access
Restrictions.ftp hides the details of individual
Computer systems.

19. FTP commands
There are three different types of FTP
commands :
 Access control commands
 Transfer parameter commands
 ftp service commands
Access control command
• USER
• PASS
• ACCT
• CWD
• CDUP

20. Transfer parameter control
 PORT
 PASV
 TYPE
 STRU ( telnet character specifying file structure
F for file, R for record ,P for pages)
 MODE (telnet character specifying data transfer
method (S for stream , B for block,
C for compressed)

21. FTP service commands
 RETR (retrieve)
 STOR(store)
 ABOR (abort)
 DELE (delete)
 RMD (remove directory)
 MKD (make directory)

22. Important terms :
• ftp site
• ftp client
• ftp server

23. advantages and disadvantages

24. http (hyper text transfer
protocol)
 http is the set of rules for transferring files (text,
graphic ,images ,sound ,video , and other multimedia
Files) on the world wide web.
 Communication between client computers and
Servers is done by sending http request and
Receiving HTTP response.
 http is an application layer protocol

25.  Http is the connectionless protocol
 An HTTP client sends a request message to
an HTTP server.
 http is a stateless protocol.
 In other words ,the current request does
not know what has been done in the previous
requests.

26. http connections
Non persistent HTTP
 At most one object is sent over a
TCP connection.
Persistent HTTP
 Multiple objects can be sent over single
TCP connection between client and server

28. HTTP protocols

30. URL(uniform resource locator)

32. http connection
 http establishes data
Connection only
ftp connection
 ftp establishes two
connection one for data
And one for the control
connection
basic
 http is used to access
website
 ftp transfer file
from
One host to another
host
efficient
 http is efficient in
transfer smaller files
like
 ftp is efficient in
transferring larger
file

33. authentication
 http does not require
authentication
 ftp require a
password
data
 The content transferred
to a device using http is
not
Saved to the memory of
That device
 The file transferred
to
The host device using
ftp is saved in the
Memory of that host.
 http is used to provide
The web pages to the
Web browser from the
Web server
 ftp is used to upload or
download files
Between client and server