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DIFFERENCE BETWEEN POP3 AND IMAP

                  Some of the differences between POP3 and IMAP are as follows:

                     Basis for
                    Comparison                  POP3                                       IMAP
                                   To  read  the  mail, it has  to  be
                   Read                                               The mail content can be read before downloading.
                                   downloaded first.

                                   The user cannot organise mails in
                   Organise                                           The user can organise the mails on the server.
                                   the mailbox of the mail server.
                                   The user cannot create, delete or  The user can create, delete or rename mailboxes
                   Modify
                                   rename mailboxes on a mail server.  on the mail server.
                   Content         A user cannot search the content  A user can search the content of mail for specific
                                   of mail, prior to downloading.     string of character before downloading.

                    HTTP AND HTTPS


                  Hypertext Transfer Protocol (HTTP) is a protocol that enables transferring data over the web. Hypertext
                  is  the way of creating documents that can be displayed on the web and which helps to establish  a
                  link between themselves and cross links to other pages on the web. HTTP has been the most widely
                  used protocol for data transfer over the web. The data that is exchanged using HTTP isn’t secure as it
                  navigates plain text (not in coded or encrypted form) i.e., anyone between the web browser and server
                  can compromise or breach the data.
                  Hypertext Transfer Protocol Secure (HTTPS) is the secure version of HTTP, the protocol over which
                  data is sent between the host browser and the connected website. The ‘S’ at the end of HTTPS stands
                  for ‘Secure’. It means all communications between your browser and the website are encrypted and
                  secured. HTTPS is often used to protect highly confidential online transactions like online banking,
                  online shopping, etc. Some of the differences between HTTP and HTTPS are as follows:

                                         HTTP                                             HTTPS

                   The address  bar  URL (Uniform Resource Locator)   The address bar URL starts with “https://”
                   begins with “http://”
                   It is unsecure.                                    It is secure mode for exchanging data.

                   There is no encryption of data.                    Data is encrypted in HTTPS.

                   It does not require any certificate.               It needs SSL (Secure Socket Layer) certificate.



                    REMOTE LOGIN PROTOCOLS

                  It refers to operating an application or software or database of a network or server from a remote
                  location.  For  example:  Accessing  the  data  or  resource  of  a  computer  that  is  placed  in  an  office
                  network, from a remote location at home. Remote access can be set up using a Local Area Network
                  (LAN), Wide Area Network (WAN) or even a Virtual Private Network (VPN) so that resources and
                  systems can be accessed from far off location or remotely.


                    24   Touchpad Computer Applications-X
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