Interested to Buy Any Domain ? << Click Here >> for more details...
When you install RedHat what is the kernel mode ? What is
kernel compilation / upgrade ?
- 4 Answers
- 9935 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / fuzail usmani
Kernel mode, also referred to as system mode, is one of the
two distinct modes of operation of the CPU in Linux. The
other is user mode, a non-privileged mode for user programs,
that is, for everything other than the kernel.
When the CPU is in kernel mode, it is assumed to be
executing trusted software, and thus it can execute any
instructions and reference any memory addresses. The kernel
is trusted software, but all other programs are considered
untrusted software. Thus, all user mode software must
request use of the kernel by means of a system call in order
to perform privileged instructions, such as process creation
or input/output.
| Is This Answer Correct ? | 7 Yes | 2 No |
Answer / zainul abedin
the mode in which the linux install first time is f1
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / susheel narayan singh
when you install redhat at that time you can switch into
terminals from ctrl+alt+f1 to ctrl+alt+f7
each terminal show different message.
but when you will go ctrl+alt+f4 then it is kernel mode
because it show kernel messages including detected hardware
and drivers.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ashish
I guess the Kernel mode will be kernel itself and the user
processes will not be able to use the resources that the
kernel is using. This is done to protect the kernel from
user programs.
Kernel compilation is installing a new kernel or adding
custom modules to the same kernel.
Kernel upgradation is upgrading it to a different version
altogether.
| Is This Answer Correct ? | 4 Yes | 5 No |
Tell me the 5 differences between Linux and Unix?
There are 4 network Interfaces, how can we find which one is Primary.
Why is it suggested to disable journalism in ext4 filesystem?
1. User gaves df -h and the system get hanged. why ? 2. what is the hardlink and softlink mount ? 3. why is portmape should be started ? 4. what is nologin option 5. how to restrict users from accessing nfs ? 6. what is the difference between cpio and tar 7. what are the kernel parameters ? how to find out it ? 8. why we use sysctl.conf ? 9. if we gives init1 from multiuser runlevel, will it affect other users who already logged in to the system ? 10. what will be the available space to use after configuering raid5 with 5 disks each having 5gb spce ?
in linux gui desktop icon was lost how con u back this icons
In how many ways linux can be installed n explain th steps involved in installation in any of the method..?
How can you see all mounted drives?
Without Using $date -dyesterday. How I get the yesterday's date ?
My Linux server in the two lan card one lan card is ok working but second lan card after restart daily lan card deactivate and then manual activate then properly working but after restart repeat this problem.(Fedora O.S.) Pls tell me solved this problem.
What is Hard mount and soft Mount?
cups stands for..?
As a system admin i want to know some things what are the troubleshooting issues we are facing frequently and what are the tickets will be raised.
Linux Commands 
