When you install RedHat what is the kernel mode ? What is
kernel compilation / upgrade ?
- 4 Answers
- 9125 Views
- IBM, I also Faced
- E-Mail Answers
Answer Posted / 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 |
Post New Answer View All Answers
i installed clustering packages.When i try to run it getting LUCI error...what is it..??
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 ?
I want to configure production interface and manage interface, how to configure both interfaces in Linux. please post the answers
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.
How to Trouble shoot performance issue in RHEL administration ? please give to one example
why /etc/shadow file do not have any permission ?
How to catagories tickets in RHEL, which tickets are belong to PROBLEM, INCIDENT and CHANGE management? please given to me with examples
what is difference between TFTP abd FTP?
This question is belong to linux support. "one of my customer told to me, my application is getting slow response". how to resolve the issue. what are the steps you will follow to resolve the issue.
what is the gate of ftp server in redhat linux?
What is the difference between ext3 and ext4?
What are the differences between FTP , NFS , SAMBA servers explain separately.
What is Hard mount and soft Mount?
