About This Flashcard Deck
This flashcard deck contains 10 cards covering key Linux+ concepts for the LINUXPLUS exam. Test your Linux administration knowledge. Use active recall by attempting to answer each question before revealing the answer.
Question
What is systemd?
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Answer
Linux init system and service manager. Uses unit files. Commands: systemctl start/stop/enable/disable/status.
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All Linux+ Flashcards
Q: What is systemd?
A: Linux init system and service manager. Uses unit files. Commands: systemctl start/stop/enable/disable/status.
Q: What is LVM?
A: Logical Volume Manager — abstracts physical storage into logical volumes. PV → VG → LV. Allows easy resizing.
Q: What does chmod 644 mean?
A: Owner: read+write (6), Group: read (4), Others: read (4). Common for regular files.
Q: What is SELinux?
A: Security-Enhanced Linux — mandatory access control (MAC) system. Modes: Enforcing, Permissive, Disabled. Uses contexts/labels.
Q: What is a cron job?
A: Scheduled task. Format: minute hour day month weekday command. Edit with crontab -e.
Q: What is the difference between apt and yum/dnf?
A: apt: Debian/Ubuntu package manager (.deb). yum/dnf: RHEL/CentOS/Fedora (.rpm). Both handle dependencies.
Q: What is /etc/fstab?
A: Filesystem table — defines persistent mount points. System reads at boot to auto-mount filesystems.
Q: What does grep -r do?
A: Recursively searches for a text pattern in all files within a directory and subdirectories.
Q: What is swap space?
A: Disk space used as virtual memory when RAM is full. Can be a partition or a file. Slower than RAM.
Q: What is SSH key-based authentication?
A: Uses public/private key pair instead of passwords. Public key on server (~/.ssh/authorized_keys), private key on client.
CompTIA Flashcard Study Technique
CompTIA exams cover broad domains with hundreds of concepts. Use these flashcards in short, focused sessions of 15–20 minutes rather than marathon study sessions. Group cards by domain and track which domains have the lowest recall rates — allocate extra study time to those areas. CompTIA exams weight domains differently, so match your flashcard focus to the domain percentages listed in the exam objectives.