Data Communication and networks

1. A presentation on

3. Protocol

4. Computer network is a system of
interconnected computers that
enables the computers to
communicate with each other and
share there resources, data and
applications.

6.  It refers to the physical media used to connect
the computers together.
 Types of transmission media:-
A.) Guided media…….
1.) Cables
2.) Optical Fiber
3.) Microwave
4.) Satellite
B.) Unguided media……….
1.) Infrared
2.) Laser
3.) Bluetooth

9.  Implement proper security policy for your
organization.
 Use proper file access permissions when
sharing files on the internet.
Look at the following set of permissions:-
MyThesis.exe r w x r w - r - -
(First set – owner’s (Second set – group’s (Third set – other’s
permissions) permissions) permissions)

11. Positively this is not the actual end because, knowledge is
the only one which has no boundaries…. Thankyou.
We hope you have been influenced by
our simple presentation.