Physical media - computer network, Computer Networking

Assignment Help:

Physical Media

In order  to define what is meant by a physical medium let us reflect on the brief life of a bit. Consider  a bit travelling from one end system through a series of links and router to  another end  systems. The source end system first transmits the bit and shortly thereafter the first router in the series receive the bit the first router then transmits the  bit and shortly thereafter a second router the bit and so  on. Thus the bit when  travelling  from  sources  to destination passes  through a series of transmitter receiver pairs. For  each transmitter receiver pair the bit is sent by propagating electromagnetic waves or optical pulses  across  a physical medium.

Physical  media can be divided in to  two categories: Guided  and  unguided media guided media include twisted pair cable  coaxial  cable  and fiber optic  cable. Unguided  media is free space. Unguided media, which  are those that provide  a conduit  from one  device  to another  include  twisted pair  cable  coaxial  cable and  fiber poetic cable. A signal  travelling  along  any of these media  is directed and  contained by the physical limits  of the  medium.

Unguided Media Transport electromagnetic  waves without  using a physical  conductor. This  type of communication  is often  referred to as  wireless  communication. Signals are normally  broadcast  through  free  and thus  available  to anyone who has a device capable  of receiving  them.

 

318_Physical Media.jpg

                                                                  figure classes of transmission media


Related Discussions:- Physical media - computer network

Client server processes - application layer, Client  Server Processes ...

Client  Server Processes A network  application  consist  of pairs  of process that send message to one  another  over a network. For  example  in a web application a client

Method of ip multicasting or multicast ip address, Can you describe the con...

Can you describe the concept of IP multicasting or multicast IP address?

Give some examples of the session layer, Session layer examples are Netbios...

Session layer examples are Netbios Names, SQL, NFS, X Windows, and RPC

What are called fat clients and fat servers, What are called Fat clients an...

What are called Fat clients and Fat servers? If the bulk of the application runs on the Client side, then it is Fat clients. It is used for decision support and personal softwa

State the steps to provide more computing power, State the Steps to provide...

State the Steps to provide more computing power In order to provide more computing power, the following steps may be taken: Add more processing power by addition of more

Explain in brief about the term- daemon, What is Daemon A daemon is ...

What is Daemon A daemon is a UNIX background process that implements the server side of a protocol. Daemons are unique to UNIX. For example, FTP stands for the File Transfer

Subtract two from number of hosts, Why do we require to subtract two from n...

Why do we require to subtract two from number of hosts?

Identify three udp characteristics, UPD is a layer 4 Transport protocol. It...

UPD is a layer 4 Transport protocol. It is connection-less due to it does establish a connection thus the 3 step handshake is not needed, it does NOT execute any flow control or ac

Control flow in distributed enrollment protocol , Control Flow: Once the c...

Control Flow: Once the client has established a network connection with a server, the server must instantiate a new, empty, BasicEnrollmentManager implementation for this client,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd