Questions:

1. What is the purpose of the "systemd" init system in modern Linux distributions?

Manage virtual machines
Monitor network traffic
Handle user logins
Control system services and processes

2. What is the purpose of the 'dmesg' command in Linux, and how can it be used to diagnose system issues?

'dmesg' displays the contents of kernel memory and CPU registers.
"dmesg" provides real-time monitoring of system network traffic.
'dmesg' is used to manage disk partitioning and filesystems.
'dmesg' displays kernel messages, including boot-up information and hardware-related events, which can help diagnose system issues.

3. What does the command "ps aux" do in Linux?

Prints the current date and time
Lists all active users
Displays information about running processes
Changes the user password

4. What command is used to view and manipulate processes in real-time in Linux?

top
ps
process
status

5. What is the default shell for most Linux distributions?

sh
bash
csh
zsh