Interview Questions - Part I

Harvest company interview question:
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Mysql server
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1.what is the switch, router and hub?
2.who was owned by the ubuntu os?
3.how to share file through nfs?
4.why need of samba? what is the service name used of samba and config file of samba?
5.how to take a backup and restore the mysql server?
6.what is a port no for ftp, mysql and https
7.Do you have any idea on clouding?


Apache:
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1.What is virtualhost in apache?
2.what is ip based and namebase website
3.what are types of log files present in the apache and what r there?
4.can i create websites with multiple ports?
5.where u will mention the logs in config file?
6.what is the difference b/w the access and custom logs
7.where thes log files present?
8.what is are the log files present in the apache
9.How many virtualhost can we assign
10.what is 500 error? why it will get?
11.what is 404 error? why it will get?
12.what is rewrite?


LAMP:
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1.What is a LAMP suite?
2.I am setting up LAMP successfully.
  a.But when i browsing i am getting blanks page why?
  b.when i browsing the site. i can see the list of directories. when i click them it will be downloaded. but the directories should not be downloaded. then what u will do?(i dont not actually directories or files)
  c.I have index.php page. when the client visit to index page it should show index.html not index.php. wat u will do for this?
  (i said by doing alias we can do this. then interviewer questioned me. if i have multiple pages with .php extention then pages should be visible in html extension.)