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DELL Unix Commands Interview Questions
Questions Answers Views Company eMail

what is the advaantage of each user having its own copy of the shell?

1218

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Un-Answered Questions

What framework is used for performance testing/load testing?

886


when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)

841


What is the working formula for Working Capital Turnover

888


How do you configure the Web Server for connection balancing and failover?

337


what cause the "error: connect:" and "error in the libname statement" when there weren't any such problems?

928






diff b/w inter process and in process

907


why is an oxygen sensor used in a boiler stack

4576


hi all.. I need your advice.. I attended interview for tcs bpo for investment banking process. can anyone tell me what will be the shift timings... will it be full night shifts??? they told it is rotational shifts...

803


what is the relation between all tabs in quality center & explain the testing process in quality center with tabs?

875


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.

1184


What are the criteria for accounting job?

770


am a textile eng. frombut with major of my course including chemical eng, subjects, can i too apply to the co.?

826


could you plz help me understanding or give an example about the accounting treatment "journal entry" in MM business cycle at the following : 1- When goods receipt 2- when MODVAT are Captured 3- Invoice varification 4- vendor payment and please how i could revers an entry when material is rejected thanks

1054


what is b tree

875


I have given the protocol for the cyclodextrin glygosyl transferase assay: One ml of appropriately diluted enzyme sample was incubated at 60 °C for 15 min with 5 ml of 1% (w/v) gelatinized soluble starch in 50 mM, 7.0-pH Tris–HCl buffer. Reaction was terminated by boiling the reaction mixture for 3 min and reaction volume was made to 10 ml with distilled water. Two ml of above reaction mixture was withdrawn and mixed with 3 ml of Tris–HCl buffer, 5 ml of 125 mM Na2CO3, and 0.5 ml of phenolphthalein (25 mg phenolphthalein/100 ml absolute alcohol). Absorbance was measured at 550 nm. The percent decrease of sample was calculated with respect to control containing 5 ml of buffer, 5 ml of sodium carbonate and 0.5 ml of phenolphthalein. where Acontrol = absorbance of control and Atest = absorbance of sample. The amount of β-cyclodextrin (β-CD) produced was estimated from the standard graph of 0–500 μg/ml β-CD concentration against % decrease in absorbance. One unit of CGTase was defined as the amount of enzyme required to produce 1 μm of β-CD/min. Please can you suggest me the formula for the defination given in the last line

1012






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