Imap and pop functions, Computer Network Security

Assignment Help:

 

How does the POP functions? What are the advantages/benefits of IMAP over POP?

POP stands for Post Office Protocol, version 3 (POP3) is one of the easiest message access protocol available which needs installation of POP3 software on the client machine as well as server machine both.

The below drawn figure shows the architectural view of thecommunication which takes place between a POP3 client and a POP3 mail server.

 

766_POP_functions.png

Figure PUP3 Communication

In POP3 communication, the client is required to bring out the e-mails from the mailbox which resides on the mail server. At first, client sends username and password for authorization. The  mail  server  checks  the  username  and  password  and  then  provides  privileges  and permissions o that particular client. The client requests a list of e-mails to which the mail server gives the e- mail information catalogue (including e-mail numbers, sizes and many more). Finally, client retrieves e-mail from mailbox based on the requirement.

POP3 comprises of two message access modes such as keep the mode and delete mode. In the keep mode context, the mail remains in the mailbox once it is retrieved for future reviewing. This mode is generally used when user is remotely accessing mails.
In delete the mode context, the mail gets deleted from mailbox as soon as it is retrieved. This mode is generally used when user is accessing mails from its personal computer( pc), where it can store the mails for future use.
The Internet Mail Access Protocol version 4 (IMAP4) gives certain advantages to the user over the POP3 which are stated below,
(i) E-mail header can be seen before retrieval.
(ii) E-mail contents can be identified with the given string of characters before the retrieval. 
(iii) E-mail can be partially retrieved when the bandwidth is quite low and the multimedia contained in e-mail requires high bandwidth.
(iv) A user can have the accessing privileges such as deleting, creating and renaming the mailboxes on mail server.
(v) A collection of the mailboxes can be created in the folder for storing the e-mails.


Related Discussions:- Imap and pop functions

The cost benefit analysis (cba) formula, The Cost Benefit Analysis (CBA) Fo...

The Cost Benefit Analysis (CBA) Formula CBA determines that whether the control alternative being evaluated is worth cost incurred to control vulnerability or not. CBA easily ca

Assignment, Hello i have submitted an assignment and i am still waiting to ...

Hello i have submitted an assignment and i am still waiting to know if it has been accepted or not the ref number is TicketID: EM201381BRY525CN, the due date is for monday 27th of

Describe the process of components identification, Probelm 1: Give the ...

Probelm 1: Give the History and Evolution of Wireless Communication System. Complete explanation Probelm 2: Describe the process of Components Identification and cal

Syntax conversion, Write down the significance of the syntax conversion . S...

Write down the significance of the syntax conversion . Syntax Conversion is described below: Syntax conversion is a significant function carried out in the presentation layer. I

Explain the limitations of a firewall, Question: (a) Mention three lim...

Question: (a) Mention three limitations of a firewall. (b) Compare packet-filtering and proxy-base firewalls. Give advantages and drawbacks of both. (c) "Proxies eff

CNSS, Assume that a security model is needed for the protection of informat...

Assume that a security model is needed for the protection of information in your class. Using the CNSS model, examine each of the cells and write a brief statement on how you would

RESPONSE, Dropbox’s tool shows how chatbots could be future of cybersecurit...

Dropbox’s tool shows how chatbots could be future of cybersecurity

Explain any two types of security policies, Question 1 Explain any two typ...

Question 1 Explain any two types of security policies Question 2 What is security attack? Explain with examples Question 3 Explain different characteristics that i

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