CompTIA Linux+ Exam Pro iOS App
Command Linux with Unshakable Precision!
Get fully prepared for your Linux certification with CompTIA Linux+ Exam Pro! This app offers a comprehensive suite of practice questions and exams designed to enhance your skills in managing Linux systems. Whether you're new to Linux or aiming for advanced certification, every test comes with detailed insights to help you strengthen your understanding of critical Linux concepts.
Key Features:
Extensive Question Bank: Dive into an expansive collection of questions covering essential Linux topics like system configuration, security, scripting, troubleshooting, and network management.
Detailed Explanations: Understand each concept thoroughly with in-depth explanations for every question, ensuring you not only know the answers but the reasoning behind them.
Custom Test Creation: Tailor your exam prep by creating custom tests based on specific Linux topics, allowing you to focus on areas that need the most attention.
Bookmark Difficult Questions: Build a personal library of challenging questions to revisit until you’ve mastered them.
Track Your Progress: Monitor your performance with progress tracking tools that help you measure your improvement as you work towards Linux certification.
Download CompTIA Linux+ Exam Pro today and develop the expertise needed to thrive in the world of Linux systems administration!
Content Overview
Explore a variety of topics covered in the app.
Example questions
Let's look at some sample questions
What does the 'free' command do in Linux?
Deletes filesDisplays memory usageFrees up disk spaceExits a program
'free' command in Linux is used to check the amount of free and used memory in the system.
Which command can be used to add a new rule to the firewall in Linux?
ufw allow 22/tcpiptables -A INPUT -p tcp --dport 22 -j ACCEPTfirewall-cmd --add-port=22/tcp --permanentAll of the above
All of the mentioned commands can be used to add a new rule to the firewall. The command 'ufw allow 22/tcp' is used in systems where UFW is installed. The command 'iptables -A INPUT -p tcp --dport 22 -j ACCEPT' is used in systems where iptables is installed. The command 'firewall-cmd --add-port=22/tcp --permanent' is used in systems where firewalld is installed.
What does the 'cd' command do in Bash?
It copies a directoryIt changes the current directoryIt creates a new directoryIt deletes a directory
'cd' stands for 'change directory'. It is used to change the current directory in Linux and other Unix-like operating systems.
What does the '*' symbol represent in a cron job?
Any valueNo valueCurrent valueNext value
In a cron job, the '*' symbol represents any possible value for the field. It does not mean no value, current value, or next value.
What does the 'veth' interface do in a Linux virtual environment?
It provides a wireless network interfaceIt provides a virtual Ethernet link between two virtual machinesIt provides a virtual Ethernet link between a virtual machine and the hostIt provides a virtual Ethernet link between two network namespaces
'veth' is a virtual Ethernet device type which simulates an Ethernet network link. It always comes in connected pairs. Anything that is transmitted on one end is immediately received on the other end.
What does the 'nmap' command do in Linux?
Network mappingNetwork configurationNetwork routingNetwork interface status
'nmap', or Network Mapper, is a free and open-source utility for network discovery and security auditing. It does not configure or route networks, nor does it display the status of network interfaces.
Which command is used to view the existing partition on a disk in Linux?
diskpartfdisk -ldiskutil listlsblk -f
The 'fdisk -l' command is used in Linux to view the existing partitions on a disk. 'diskpart' is a Windows command, 'diskutil list' is used in MacOS, and 'lsblk -f' shows block device information, not specifically disk partitions.
Which command is used to close an opened LUKS volume?
cryptsetup closecryptsetup stopcryptsetup endcryptsetup exit
'cryptsetup close' is used to close an opened LUKS volume.
What command can be used to view the end of a log file in real time?
headtail -fcatless
'tail -f' command allows you to view new lines added to the end of a file in real-time, which is particularly useful for monitoring log files.
What command can be used to find out how long the system has been running?
timeuptimelongtimeruntime
'uptime' command in Linux is used to find out how long the system is active (running). This command returns set of values that involve, the current time, and the amount of time system is in running state, number of users currently logged into, and the load time for the past 1, 5 and 15 minutes respectively.
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