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•  Navigation Bar: These buttons help move back and forth through web pages you have visited. Some of the commonly
              used buttons are:
                 w Back, Forward, Home, Refresh? Reload, Stop.


                                    1. Explain any two types of protocols.
                     uiz Bee        2. What is the use of a web browser?

                                    3. What are the differences between a web client and a web server?
                                    4. Write any two applications of Internet.




                    EMAIL

            Electronic mail is the most popular and convenient way of sending and receiving messages through the Internet. It
            takes no time to deliver a message in the inbox of any email service provider like Gmail, Yahoo, Outlook, Hotmail,
            etc. Nowadays, it has become a cheap and an effective way to keep in touch with your family and friends. In an
            organisation, there is no need to maintain the log of the official letter sent to different employees working at different
            hierarchies manually.

            Differences Between Postal Mail and Email
            Following are some differences between postal mail and email:
            •  Postal mail is the traditional way of sending physical mail which takes a few days to deliver. Email is the fastest way
              to send digital messages all across the world within a fraction of seconds.
            •  Postal mail is chargeable and the cost increases with the distance and the weight. If you are planning to send some
              magazines, brochures, photo album, then, the cost will increase. In Email, we pay only for the Internet with no extra
              cost of the email services. So, it is the cheapest way to send mail with bulky content. You can send photos, audios,
              videos, animation, documents, etc. as an attachment easily.
            •  In postal mail, if you have to send the same letter to multiple recipients, then, it is an expensive process. Through email
              we can send the same mail to multiple recipients by just writing the email address in cc or bcc with no added cost.
            •  In postal mail, the recipient can receive a mail only at the marked geographical location using street number, locality,
              city, pincode, etc. In email, it is a logical address that can be accessed from any computer and at any location all over
              the world.

            Advantages of Email

            The following are the advantages of using email:
            •  Sending and receiving emails is a fast way of communicating as compared to the traditional mails.
            •  Emails can be sent anytime. That means it’s not restricted to only working days or working hours.
            •  Emails can be sent to one or multiple recipients without much effort and at no cost.
            •  It is an inexpensive way of mailing as it only requires an Internet connection.

            Components of Email Address

            An email address is a unique logical address of an email account in any email service provider. A user can send and
            receive messages using an email address. It is made up of:
            •  Username: It is a unique name which is not case sensitive and spaces are not allowed.
            •  @sign: It works as a separator of the username and domain name in an email address.
            •  Domain name: It is the name of the email service provider. For example— gmail, yahoo, hotmail, etc.


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