A+ Core2 Day 3b Linux Commands

Front

Which command is used to list directory contents in Linux?

Back

ls

Answer explanation

The command 'ls' is used to list directory contents in Linux. The other options serve different purposes: 'pwd' shows the current directory, 'rm' removes files, and 'chmod' changes file permissions.

Front

What is the purpose of the 'chmod' command in Linux?

Back

Change file permissions

Answer explanation

The 'chmod' command in Linux is used to change file permissions, allowing users to set who can read, write, or execute a file. This is essential for managing access and security in a multi-user environment.

Front

Which command is used to change the ownership of a file in Linux?

Back

chown

Answer explanation

The command 'chown' is used in Linux to change the ownership of a file. The other options, 'cp', 'mv', and 'grep', serve different purposes such as copying files, moving files, and searching text, respectively.

Front

What is a best practice for maintaining system security in Linux?

Back

Regularly update/patch the system

Answer explanation

Regularly updating and patching the system is crucial for maintaining security in Linux. It ensures that vulnerabilities are fixed, reducing the risk of exploitation. The other options do not contribute positively to system security.

Front

Which tool is commonly used for file sharing in Linux? Options: Shell/terminal, Samba, Nano, Dig

Back

Samba

Answer explanation

Samba is a tool specifically designed for file sharing in Linux, allowing interoperability with Windows systems. The other options, like Shell/terminal and Nano, are not primarily used for file sharing.

Front

What is the default administrative account on a Linux system called?

Back

Root user

Answer explanation

The default administrative account on a Linux system is called the 'Root user'. This account has full access to all commands and files, allowing for system administration tasks.

Front

What is another term for the root user in Linux?

Back

Superuser

Answer explanation

In Linux, the root user is often referred to as the 'superuser'. This account has full administrative privileges, allowing it to perform any action on the system, unlike regular users who have limited permissions.

Front

What does the effective group ID determine in Linux?

Back

Group permissions for accessing files and resources

Answer explanation

The effective group ID in Linux determines the group permissions for accessing files and resources. It allows users to access files based on the group they belong to, influencing what they can read, write, or execute.

Front

What is the purpose of wildcards in Linux commands?

Back

To substitute characters in a string.

Answer explanation

Wildcards in Linux commands are used to substitute characters in a string, allowing users to match multiple files or patterns easily. This makes it easier to work with groups of files without specifying each one individually.

Front

What are options (switches) used for in Linux commands?

Back

To make a command more versatile

Answer explanation

Options (switches) in Linux commands enhance functionality, allowing users to modify command behavior and tailor it to specific needs, making commands more versatile.