Quantum Cryptography: A method of securing communication by applying principles of quantum mechanics, which enables creating secure keys for encrypting data. This approach makes use of quantum states to detect eavesdropping and offers unbreakable encryption.

Quarantine processing: The isolation of potentially infected or malicious data or software from the rest of a system or network in order to prevent it from spreading or causing damage. It is used in cybersecurity to protect networks and systems from malware and other forms of cyberattack. Examples include using virtual machines or sandboxes to run untrusted software, using intrusion detection systems to identify and block suspicious traffic, and implementing access controls to prevent unauthorized access to quarantined data or systems.

Query-based Attacks: A category of cyber-attacks that involve the manipulation or exploitation of query processes within databases or applications. Specific examples include SQL injection, where malicious SQL queries are inserted into user input fields to manipulate databases, and DDoS attacks, which may flood a server with excessive network protocol queries to disrupt service.

Queue: A data structure that allows for the storage and retrieval of items in a specific order. It is used in the field of computer science to manage the flow of data and ensure efficient processing. Examples include the use of queues in operating systems to manage the execution of tasks, the use of queues in networks to manage the flow of packets, and the use of queues in databases to manage the flow of queries.