76.
What causes a tainted kernel?
- A.A kernel driver that is not available as open source driver
- B.A driver that was developed for a different operating system but has been ported to Linux
- C.A driver that has failed.
- D.An unsupported driver.
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| A tainted kernel is caused by drivers that are not available as open source drivers. Using these may have impact on the stability of the Linux operating system, which is why it is good to have an option to recognize them easily. |
77.
What is the name of the command that shows kernel events since booting?
- A.logger
- B.dmesg
- C.klogd
- D.journald
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The dmesg utility shows the contents of the kernel ring buffer. This is the area of memory where the Linux kernel logs information to and gives a clear overview of recent kernel events. |
78.
Which command enables you to find the actual version of the kernel that is
used?
- A.uname -r
- B.uname -v
- C.procinfo -k
- D.procinfo -l
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| The uname -r command shows the current kernel version. The uname -v command gives information about the hardware in your computer, and the procinfo command does not exist. |
79.
Which command shows the current version of RHEL you are using?
- A.uname -r
- B.cat /proc/rhel-version
- C.cat /etc/redhat-release
- D.uname -k
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The /etc/redhat-release version contains information about the current version of RHEL you are using, including the update level. |
80.
What is the name of the process that helps the kernel initializing hardware
devices properly?
- A.systemd-udevd
- B.hwinit
- C.udev
- D.udevd
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| On a systemd-based operating system such as RHEL 7, the systemd-udevd process takes care of initializing new hardware devices. |
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