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DIFFERENCE BETWEEN POP3 AND IMAP

                      Basis for
                    Comparison                      POP3                                      IMAP

                                    To read the mail, it has to be downloaded  The mail content can be read before
                    Read
                                    first.                                   downloading.

                                    The user cannot organize mails  in the  The user can organize the mails  on the
                    Organize
                                    mailbox of the mail server.              server.
                                    The user cannot create, delete or rename  The user can create, delete or rename
                    Modify
                                    mailboxes on a mail server.              mailboxes on the mail server.

                                                                             A user  can  search  the  content  of mail
                                    A user cannot search the content of mail,
                    Content                                                  for  specific  string  of  character  before
                                    prior to downloading.
                                                                             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 begins with “http://”          The address bar URL starts with “https://”

                   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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