Linux Operating System

Front

What does HCL mean?

Back

Hardware Compatibility List

Answer explanation

A hardware compatibility list or HCL lists tested, compatible, and sometimes incompatible hardware devices for a particular distro.

Front

What is a daemon?

Back

A program that runs in the background of the system.

Answer explanation

A daemon is a computer program that runs as a background process rather than under the direct control of an interactive user. Daemons are commonly used for processes that maintain server operations, such as the HTTPD (HTTP daemon) used by Apache to provide web server services to an end-user.

Front

Which of the following is a requirement of the GPL license but not the BSD license?
Users who modify and distribute the software under the GPL license must make the modifications they made available to the recipients under the same license.

Back

Users who modify and distribute the software under the GPL license must make the modifications they made available to the recipients under the same license.

Answer explanation

The GPL license is copyleft; therefore, users must disclose the source code and make any modified versions of the code open source. Under GPL, users cannot change any of the original license terms or introduce their own. The BSD license family does not compel users to do any of these things and instead has fairly relaxed redistribution terms.

Front

Which of the following is the correct order of a computer's operation? (1) The computer waits for user input, (2) The user selects a command and enters it via the keyboard or mouse, (3) The computer executes the command

Back

The correct order is: (1) The computer waits for user input, (2) The user selects a command and enters it via the keyboard or mouse, (3) The computer executes the command.

Answer explanation

The computer waits for user input; then the user issues a command then the computer executes the command.

Front

After installing a new package, in which directory are you most likely to find its configuration file? Options: /lib, /etc, /conf, /usr

Back

/etc

Answer explanation

/etc is a folder which contains all your system configuration files.

Front

Which of the following displays network connections for Transmission Control Protocol, routing tables, and a number of network interface and network protocol statistics?
Options: net, ping, netstat, traceroute

Back

netstat

Answer explanation

netstat is a command that displays network connections for Transmission Control Protocol, routing tables, and a number of network interface and network protocol statistics.

Front

Which of the following directories is often used to store log files? Options: /var, /temp, /dev/hdc1d2p3, /usr

Back

/var

Answer explanation

/var is a standard subdirectory of the root directory in Linux contains files to which the system writes data during the course of its operation. /var/log contains log files.

Front

Which of the following is used as a virtual or pseudo filesystem to provide a tree of all of the device nodes and drivers in the running kernel? Options: /boot, /proc, /sys, /dev

Back

/dev

Answer explanation

The /dev tree contains device nodes, which gives user space access to the device drivers in your OS's running kernel. All POSIX type OSes have a /dev tree.

Front

Which directory contains all of the installed kernels on your system and their needed drivers? Options: /boot, /proc, /sys, /dev

Back

/boot

Answer explanation

The /boot directory contains the kernel, its associated files, and its needed drivers to boot up the operating system during the startup process.

Front

Which version of Linux should be installed on a system with a 64-bit processor? Options: x32, x64, x86, x99

Back

x64

Answer explanation

A 64-bit processor can support a 64-bit (x64) or 32-bit (x86) operating system. You should install a 64-bit operating system to ensure you can have more memory since 32-bit operating systems are limited to only 4 GB of memory.