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Old 09-06-2008, 11:39 PM   #1
mechdude
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Unhappy Exam simulator all good options, just one answer


Hi, I'm preparing to take a LPIC-1 certification. On a test simulator, I got this question to answer:
Quote:
You started an X-application with the parameter -display foo:0 but you get
the message "Can't open display". What is the reason?

Choose the best answer.
  • foo is not known, try it with it's IP-address
  • you have to use foo:1 instead of foo:0
  • you must run the command "xhost foo" before the above command
  • you must run "xhost yourcomputer" on foo before the above command
  • you must be root to display something on other computer's screen
all of them make sense to me, however just one answer is permitted.

Opinions?
 
Old 09-07-2008, 11:48 AM   #2
custangro
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I think it's this one...

you must run "xhost yourcomputer" on foo before the above command

Last edited by custangro; 09-07-2008 at 04:34 PM.
 
Old 09-07-2008, 05:21 PM   #3
mechdude
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Question Tested for "cannot open display" error

Quote:
Originally Posted by custangro View Post
I think it's this one...

you must run "xhost yourcomputer" on foo before the above command
Yep. I chose that one, but in doubt I tested the other options on my Fedora 9 box. All of them gave me a "cannot open display" error.
 
  


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