Question { IBM, 20861 }

1.I want to change runlevel but the Users shall not be
disturbed?how?
2.Disk have 5gb disk utilization even though files unable to
create, why?
3.what are the internal and external command in linux?
4.sar command o/p?
5.how list the open files?
6.what is kernel compiling?
7.How do u See complete configuration in ur system?
8.how will u make a daily updates with cron daily?
9.which port is associated with ttys0?
10.specific some problems linux admin(if u are linux
admin)faced and how did u overcome it?

Answer

7. I think this question is related with hardware
configration of pc,to see complete configration of hradware
followings commands are used:
a. dmidecode
b. kudzu -p
c. hal -device

Question { 16142 }

What account is created when you install Linux?

Answer

root account only

Question { 6943 }

Who owns data dictionary?

Answer

The SYS user owns the data dictionary. The SYS and SYSTEM
users are created when the database is created.

Question { 6859 }

Which two commands can you use to delete directories?

Answer

1. rmdir : use to delete only blank
directories .

2. rm -rf : use to delete directory & its
all contents.

Is This Answer Correct ?

28 Yes

0 No

Question { 9309 }

Why you shouldn’t use the root login

Answer

As we know that root is superuser in linux, having
unlimited power to manipulate the system: when logged as
root, you can read,modify or delete at any file,change into
any directory,modify configration of the system & perform
almostany task on system.
AS root user you can do virtually unlimited damage to the
system, corrupting oor deleting all files. So,it is
essential that you not log in as root user unless it is
absolutely necessary.
Other reason for it for secuirty purpose,if you work on a
linux server & if it is hacked by a hacker in this case if
you log as root,hacker can acquire the power of root user &
may try to damage your system. So during first login of the
day try to login as normal user rather then root user,
after that you may login as root user.