31 votes 31 votes Consider the following clauses: Not inherently suitable for client authentication. Not a state sensitive protocol. Must be operated with more than one server. Suitable for structured message organization. May need two ports on the serve side for proper operation. The option that has the maximum number of correct matches is IMAP-i; FTP-ii; HTTP-iii; DNS-iv; POP3-v FTP-i; POP3-ii; SMTP-iii; HTTP-iv; IMAP-v POP3-i; SMTP-ii; DNS-iii; IMAP-iv; HTTP-v SMTP-i; HTTP-ii; IMAP-iii; DNS-iv; FTP-v Computer Networks gateit-2007 computer-networks network-protocols normal + – Ishrat Jahan asked Oct 30, 2014 Ishrat Jahan 6.6k views answer comment Share Follow See 1 comment See all 1 1 comment reply mahendrapatel commented Jan 13, 2023 reply Follow Share This question answers are more confusing 0 votes 0 votes Please log in or register to add a comment.
Best answer 4 votes 4 votes $\text{SMTP}$ which uses $\text{SMTP-AUTH}$ for client side authentication. More read. It is wrong to say that HTTP does not provide authentication mechanism – it is just that the mechanism is not secure due to lack of encryption. More read. $\text{HTTP}$ is mostly a stateless protocol though some state mechanisms like cookies are there. More read. $\text{DNS}$ The below paragraph is take from Page 4 of RFC 1035 ”The DNS requires that all zones be redundantly supported by more than one name server. Designated secondary servers can acquire zones and check for updates from the primary server using the zone transfer protocol of the DNS.” $\text{IMAP}$ is suitable for structured message organization. The below paragraph is taken from RFC 3501. ”The Internet Message Access Protocol, Version 4rev1 (IMAP4rev1) allows a client to access and manipulate electronic mail messages on a server. IMAP4rev1 permits manipulation of mailboxes (remote message folders) in a way that is functionally equivalent to local folders. IMAP4rev1 also provides the capability for an offline client to resynchronize with the server.” $\text{FTP}$ needs two connections – one for data and another for control. The below paragraph is taken from Page 17 of RFC959. ”Both the user and the server-DTPs have a default data port. The user-process default data port is the same as the control connection port (i.e., U). The server-process default data port is the port adjacent to the control connection port (i.e., L-1).” Thus, Option D is the answer as all the five matches are correct. gatecse answered Jan 26, 2023 • selected Jan 26, 2023 by gatecse gatecse comment Share Follow See all 0 reply Please log in or register to add a comment.
29 votes 29 votes They are asking for maximum correct matches so Should be $\text{HTTP}$ thus we use $\text{HTTPS}$. $\text{HTTP}$ as it does not depend on state of device or operating system. $\text{IMAP}$ or $\text{DNS}^*$Not sure but they may involve multiple servers. $\text{POP3}$ is suitable for structuring or arranging the folders. $\text{FTP}$ needs two ports,$20$ for data and $21$ for control. Thus, Option D, As it's matching with $\text{HTTP-2,IMAP-3,FTP-5}$. Shashank Chavan answered Feb 1, 2016 • edited Jan 26, 2023 by gatecse Shashank Chavan comment Share Follow See all 9 Comments See all 9 9 Comments reply ANKIT CHAUHAN 1 commented Dec 10, 2016 reply Follow Share IMAP is used multiple servers https://en.wikipedia.org/wiki/Internet_Message_Access_Protocol 2 votes 2 votes Chhotu commented Dec 18, 2017 reply Follow Share Should be HTTP thus we use HTTPS This statement requires small correction. 1 votes 1 votes rahul sharma 5 commented Dec 27, 2017 reply Follow Share Where did you read the point about POP3 ?POP3 is suitable for structuring or arranging the folders. Can you given any reference? 4 votes 4 votes MiNiPanda commented Nov 7, 2018 reply Follow Share Need clarification for iii) 2 servers are needed for SMTP..isn't it? 5 votes 5 votes chandra sai commented Aug 29, 2019 reply Follow Share For IMAP and POP3 https://www.geeksforgeeks.org/differences-between-pop3-and-imap/ 1 votes 1 votes Priyansh Singh commented Sep 3, 2020 i edited by Priyansh Singh Dec 22, 2020 reply Follow Share Is $(ii)$ statement asking about stateless and statefull ? 0 votes 0 votes Venky8 commented Apr 24, 2021 reply Follow Share @Priyansh Singh Statement (ii) is asking about statelessness. Also for the correct explanation of (ii) see this link. 0 votes 0 votes Divyanshu Shukla commented Jun 5, 2021 i edited by Divyanshu Shukla Jun 5, 2021 reply Follow Share IMAP4 is suitable for message organization not POP3. Ref:Forouzan page 839. 3 votes 3 votes Divyanshu Shukla commented Jun 5, 2021 reply Follow Share Should be HTTP thus we use HTTPS. HTTP or SMTP or DNS as it does not depend on the state of the device or operating system. IMAP4 or DNS as they involve multiple servers. IMAP4 is suitable for structuring or arranging folders. FTP needs two ports 20 for the data connection and 21 for the control connection. 3 votes 3 votes Please log in or register to add a comment.
1 votes 1 votes Option d. anshu answered Feb 3, 2015 anshu comment Share Follow See all 3 Comments See all 3 3 Comments reply Akash Kanase commented Dec 18, 2015 reply Follow Share why ? 7 votes 7 votes manishkumar111 commented Jan 30, 2016 reply Follow Share I think ftp uses two ports 21 for commands and 20 for data transfer.. thats all i know. 4 votes 4 votes Shashank Chavan commented Feb 1, 2016 reply Follow Share @Akash check out my answer. 1 votes 1 votes Please log in or register to add a comment.
0 votes 0 votes Option D Asking for maximum matches C :- SMTP[(ii)-stateless], DNS[(iii)-multiple servers] → 2 matchings D:- HTTP[(ii)-stateless], IMAP[(iii)-multiple servers], FTP[(v)-2 ports on server side] → 3 matchings Ashley Varghese Joy answered Dec 18, 2020 Ashley Varghese Joy comment Share Follow See 1 comment See all 1 1 comment reply Divyanshu Shukla commented Jun 5, 2021 reply Follow Share IMAP4 is responsible for organizing messages in folders. So, C should have 3 matchings. IMAP ● Developed after POP and attempts to fix POP deficiencies ● allows keeping all mail on the server ● allows mail categorization via folder metaphor ● mail is easily flagged (answered, draft, deleted, seen, recent); this isn’t the same on all servers ● provides for multiple connections to the server 1 votes 1 votes Please log in or register to add a comment.