Friday, September 27, 2019

Type of account TCP/IP or sheli / Internet and Networking

Type of account TCP/IP or shell 
Username or login name :- This is the name by which you login to the internet.  You have to suggest this name while applying for connection.
Password :- This is necessary for accessing the internet.  Usually you are required to suggest this password while applying for the connection.  If no one else on the internet has this password this will assign to you.  Else,  the system administrator of the ISP will assign a suitable password to you at the time of granting of connection,  with an advice to change this password.  It is essential to keep changing password frequently.
E-mail address :- Since most ISPs support e-mail services,  you will also be ass8gned an e-mail address. The network provides the convenient system for users to send a message to each other; this use of a network is known as Electronic Mail (E-mail).  To avail of E-mail facility a user has to become a subscriber of an agency providing Email services. In E-mail system,  each user (subscriber)  is allotted an E-mail number and a mail box. A mail box is a memory which can store message and data.  Consider an example where two users have E-mail facility and wants to communicate with each other.  When the first user wants to send the message to other users,  he will send it on the E-mail number of the second user.  The message will be stored on his computer; he can issue appropriate command to read the message from the mail box.  Note that the message can be transmitted from one user to the other users in his absence.
           Thus the E-mail offers the speed and convenience of a phone call with out the frustration of telephone tag and with the option of communicating simultaneously with a number of person.  The message be of short size,  a single line or a copy of pages or a several hundred-page document.  The E-mail is becoming very popular this day.  E-mail services are cheaper and fast as compared to courier,  STD,  FAX or Telex.
               There are many E-mail service providers operating in India.  Some of them are provider by India. Government and other are provided by private sectors.  The commercial providers are clubbing other services along with E-mail.  The other services like stock market and hotel reservation are provided by the private network.  The Bucket is a satellite based communication network.  It is the biggest network under the control of the headquarters of National Informatics Center (NIC),  New Delhi. The E-mail facility is available to government agencies and members of the NIC family.
              Format of an E-mail message Like a formal letter e-mail also is divided into various sections.  In a good business letter,  you would have the name and address of the person to whom the letter is addressed,  salutation,  textatter, sender's name etc. Most of these you would find here too but with some difference.
Headers :- It is very important that your header must be loud and clear for it can be seen and read from a distance too.
To :- The To: field contains the e-mail address of the person to whom you are sending the e-mail. If you are sending e-mail to someone in your own domain,  you do not need to include @ domain.
From :- In most of the cases,  you would not be typing this,  since it would be taken from the system.  It in fact included your e-mail address.
Subject :- The Subject : field should contain a very short description (20-30 characters)  of what your message is about.  This field can also be called Subject of the Message : or simply message. Bit is not compulsory to have a subject.
Cc :- You can send the copy of the same e-mail to another person.  For this you have to mention the e-mail address of the second receipt.  The software would take care that the same message is sent to the second recipient too.
Bcc :- It is the short from of Blind Carbon Copy,  which gives you a way of copying along with this e-mail . In most of the cases while applying for a job,  the latter is typed in the e-mail text and the bio data which is mostly in some word processing mode,  attached to it. 
Data :- Data and time are usually taken from the system.  You need not type it.
I address :- Every connected computer to the internet will be assigned unique number called it's IP address.  This is actually a 33bit number,  but is more commonly represented as four numbers joined by dots,  like 202.54.1.18

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