SAC Operating Systems and System Configuration 2

Question 1

Which Linux command displays the current runlevel on a SystemV init system?

Accepted Answer

runlevel

Answer

The `runlevel` command prints the previous and current runlevel on SysV init systems.

Question 2

In Windows, which registry hive stores user-specific settings for the currently logged-in user?

Accepted Answer

HKEY_CURRENT_USER

Answer

HKEY_CURRENT_USER (HKCU) contains configuration settings specific to the currently logged-in user.

Question 3

What is the purpose of the /etc/fstab file in Linux?

Accepted Answer

Lists filesystems to mount at boot

Answer

/etc/fstab defines which filesystems should be automatically mounted at system boot and their mount options.

Question 4

Which Windows tool allows administrators to configure which services start automatically at boot?

Accepted Answer

Services.msc

Answer

Services.msc (the Services management console) lets administrators view, start, stop, and configure service startup types.

Question 5

On a Linux system, what does the sticky bit do when set on a directory?

Accepted Answer

Allows only the file owner to delete files within it

Answer

The sticky bit on a directory ensures only the file's owner (or root) can delete or rename files within it, even if others have write permission.

(SAC) System Administration Certification Practice Test