Ithink that the answer is C)
In a relational database application, a <u>foreign key</u> is used to link one table with another.
<h3>What is a
foreign key?</h3>
In database management system (DBMS), a foreign key can be defined as a column whose value provides a link between the data that are stored in a table or relational database.
This ultimately implies that, a <u>foreign key</u> is used to link one table with another in a relational database application.
Read more on keys here: brainly.com/question/8131854
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ANSWER: BOT
EXPLANATION: When a PC is experiencing the listed effects, it thus depicts that the PC is under attack by a bot, which is a type of script or software application that establishes automated tasks via command.
However, a bad bots often initiate malicious tasks that gives room for attackers to take control over an affected PC remotely, most especially for fraudulent activities.
When several affected computers are connected, they form a botnet connection.
You could install it from a flash drive a disk.