Processes, Users and Application Development

Which of the following statements about processes is correct?

• A process can run only one thread of execution

• All processes run with the same privileges

• Processes can communicate with each other through specific mechanisms

• A process cannot be interrupted once execution begins

What is the role of a process loader?

• Loading the executable file into RAM and initializing execution

• Compiling the source code of the program

• Optimizing the resource consumption of the process

• Encrypting the process data during execution

Which of the following signals can be used to stop a process?

• SIGKILL

• SIGUSR1

• SIGCONT

• SIGCHLD

In multi-user systems, what role does the 'root' user have?

• Is the user without special privileges

• Has full access to all system resources

• Can only be created by the system administrator

• Is a temporary account for debugging

How can a regular user temporarily obtain administrator privileges?

• By using the su or sudo command

• By editing the system configuration file

• By changing the root user's password

• By creating a new account with the same permissions

What does the 'setuid' bit set on an executable file allow?

• The executable will always run with normal user privileges

• Allows a regular user to execute the file with the owner's privileges

• Prevents the file from being executed by the root user

• Increases the performance of the program execution

What does a file system represent in the context of an operating system?

• A way to organize and store data on disk

• A set of rules for encrypting data

• A protection mechanism against viruses

• A set of permissions for users

Which of the following utilities is used to change a user's password in Linux?

• passwd

• change-pwd

• reset-pass

• moduser

What does the 'cap_net_admin' capability allow in Linux?

• Network configuration

• Access to all system files

• Changing other users' passwords

• Installing new programs without administrator permissions

How can the permission of a file be checked in Linux?

• With the command ls -l

• With the command showperm

• By manually editing the permission file

• Using the chmod utility without arguments