What is Open Source?
Software where the source code is made available to the public for use or modification.
This allows users to study, change, and distribute the software.
Define Sandbox.
A security mechanism for separating running programs, providing an isolated area for apps.
This helps prevent malicious software from affecting the system.
What does Rooting refer to?
The process of attaining privileged control (root access) over various Android subsystems.
Rooting allows users to bypass restrictions set by manufacturers.
What is Jailbreaking?
The process of removing software restrictions imposed by iOS on Apple devices.
This enables users to install unauthorized apps and tweaks.
What is the Kernel?
The core of the operating system that manages the operations of the computer and hardware.
It acts as a bridge between applications and the actual data processing done at the hardware level.
Define Cron.
A time-based job scheduler in Unix-like operating systems used to run tasks at specific times.
Cron allows for automated execution of scripts and commands.
What does PRL stand for?
Preferred Roaming List; a database used to tell a mobile device which cell towers to use.
This helps optimize network connectivity for mobile devices.
What is a GUI?
Graphical User Interface; a visual way of interacting with a computer using items like icons.
GUIs make it easier for users to navigate and use software applications.
Define CLI.
Command Line Interface; a text-based interface used to type instructions to the OS.
CLIs are often used for scripting and automation tasks.
What does S.M.A.R.T. stand for?
Self-Monitoring, Analysis, and Reporting Technology used to detect and report drive reliability.
S.M.A.R.T. helps predict hard drive failures.
What is a VPN?
Virtual Private Network; a secure tunnel for data across a public network like the internet.
VPNs enhance privacy and security while browsing online.
What model does Apple use to ensure apps are approved before release?
The walled garden model
This model restricts app distribution to the official App Store.
What built-in tool does macOS use for incremental backups?
Time Machine
Time Machine automatically backs up files and allows users to restore previous versions.
Which Linux command allows a user to run a command with root privileges?
The sudo command
‘sudo’ stands for ‘superuser do’ and is used to execute commands with elevated permissions.
What is an available iOS device security measure after 10 failed passcode attempts?
All data on the device is deleted
This security feature is designed to protect user data from unauthorized access.
Which sensor detects how a device is held to change screen orientation?
An accelerometer
The accelerometer measures the acceleration of the device in three dimensions.
What is the primary difference between Android and iOS regarding source code?
Android is open source, while iOS is closed source
This affects customization and app development for each platform.
Which Linux/macOS command is used to change the current working directory?
The cd command
‘cd’ stands for ‘change directory’ and is used to navigate the file system.
What is the name of the central location for managing passwords in macOS?
Keychain
Keychain securely stores passwords, certificates, and other sensitive information.
Which sensor allows a mobile device to measure or maintain rotational motion?
Gyroscope
The gyroscope helps in detecting the orientation and rotation of the device.
What process connects a mobile device to another device or computer to share data?
Pairing
Pairing typically involves Bluetooth technology for wireless connections.
What does a remote wipe do to a mobile device?
It deletes all user data and returns the device to factory settings over a network
This is often used for security purposes if a device is lost or stolen.
