OS wk 6 In class exercise

What is the purpose of a Command-Line Interface (CLI)?

• To interact with the OS using icons and windows 

• To type commands directly into the system

• To only display error messages 

• To automatically run programs without user input 

Which system call is used to open a file in Linux?

• read()

• open() 

• printf() 

• fork() 

What does the command ls -a do?

• Lists files in long format 

• Lists all files, including hidden ones 

• Deletes all files 

• Shows file permissions

Which OS structure keeps all functions inside the kernel?

• Microkernel 

• Monolithic 

• Hybrid 

• Layered 

What is the first program that runs when a computer starts?

• Bootloader 

• Kernel 

• BIOS/UEFI 

• init/systemd 

Which command moves a file from one directory to another?

• cp 

• mv 

• rm 

• mkdir 

What does GUI stand for?

• General User Interface 

• Graphical User Interface 

• Global Utility Interface 

• Guided User Input 

What is the role of a system call in an OS?

• To display graphics 

• To act as a bridge between apps and the OS kernel 

• To delete files permanently 

• To manage Wi-Fi connections 

Which command shows the current working directory?

• cd 

• pwd 

• ls 

• where 

What is GRUB used for?

• File editing 

• Choosing which OS to boot 

• Managing memory allocation 

• Encrypting files