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CB&I Lummus Interview Questions
Questions Answers Views Company eMail

what is differance between dirty earthing and clean earthing and their applications

2 50375

Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.

1571

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Un-Answered Questions

What is 'Eazypay' launched by ICICI Bank?

684


Which is the animal which never drink water?

608


What is the latest panda update ?

169


Will ATL create all of the topological relationships within the topology layer?

1714


What does the if function do in excel?

315






4 down vote favorite share [g+] share [fb] share [tw] I am developing my site using server side sessions using redis as backend for saving the session. Now the issue which is bothering me is of user leaving the website without logging out. I mean user simply closes the browser which causes the cookie to be deleted. Now session of that user still exists on the server and will not be used again as new login requires creating a new session due to security reasons. To avoid the case where hacker steals the old cookie and use it after user login again with same old session id. In essence user leaves the website without explicitly logging out and his session will be deleted after certain time limit of inaccessibility. I am thinking time limit of 30-60 minutes. Also with every new request from user his cookie will also be updated to keep track of when the user last time accessed the site. But nowadays, people let site remain open for long time without accessing it. For example users open facebook and gmail in new tabs and forget about them for 2-3 hours and still they are not asked to login again. Is letting a 2-3 hours old cooke access the session secure? My concern is someone steals user cookie and use it 2-3 hours later. Thinking on this topic has also forced me to question how facebook manages security if user can use a session where they are not accessing it for long periods of time and still they remain logged in. Or is it not secure for me to keep logged in when am not accessing the site session for longer period of time? It can be the case also there is some pinging mechanism using which sites keep track of user having their site open in a browser and when browser closes they are notified and can work accordingly. My website is a social network and needs all those security and usage features which a social network may need. I am new to web security and web development in general and may be the case where my above questions may seem a little basic. If you feel that is the case kindly point to some good reference where I can read and find answers to my question.

1739


What are the various types of stl containers?

729


Tell us about this state's current Chief Minister?

714


Sir I have got qualified in IBPS Clerical examination conducted in Nov'2011. I am expecting one question by interview " Where do you See after 5 years from Now in Bank"? Pleas advice me with good reply in this regard Sir.

2561


what should an "editors note" contain? How does one write it? : Journalist

603


What is entityset? : Entity framework

574


What are email automation commands?

1


What are the features of java?

531


What are the mapping associations used in hibernate?

144


Difference between search specification and search constant

1772