A primary key is a value that uniquely identifies a database record or a row in a table. A primary key can be a single column or a combination of columns that have unique values for each record. A primary key ensures that each record can be distinguished from others and prevents duplicate data. For example, in a database that stores information about employees, the employee ID column can be used as a primary key for each employee record56. References := CompTIA IT Fundamentals (ITF+) Study Guide, 2nd Edition, Chapter 5: Database Fundamentals3; What is Primary Key? - Definition from Techopedia7

The device that the administrator is most likely installing is a printer. A printer is an output device that supports both USB and network capability, meaning that it can be connected to a computer or a network using either a USB cable or a wireless or wired network connection. A printer can produce hard copies of documents, images, or other data on paper or other media. A scanner is an input device that supports both USB and network capability, meaning that it can be connected to a computer or a network using either a USB cable or a wireless or wired network connection. A scanner can capture images or text from paper or other media and convert them into digital data. A camera is an input device that supports both USB and network capability, meaning that it can be connected to a computer or a network using either a USB cable or a wireless or wired network connection. A camera can capture images or videos and store them as digital data. An SSD stands for Solid State Drive, which is a type of storage device that supports both USB and network capability, meaning that it can be connected to a computer or a network using either a USB cable or a wireless or wired network connection. An SSD uses flash memory chips to store data persistently even when the power is turned off. References: The Official CompTIA IT Fundamentals (ITF+) Student Guide (Exam FC0-U61), Chapter 1: IT Fundamentals1

Unicode is the most likely encoding standard used to represent international text data. Unicode is a universal character set that can encode over a million characters from different languages, scripts, symbols, and emojis.
Unicode supports multiple encoding forms, such as UTF-8, UTF-16, and UTF-32, that use different numbers of bytes to represent each character. Unicode enables consistent and interoperable representation and processing of text data across different platforms and applications. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 138.

Explanation
IMPORT is the action that should be used to populate a database with large amounts of data from an external source. IMPORT is a command or function that allows a database to read and load data from an external file or source into a table or structure within the database. IMPORT can help a database administrator to transfer or migrate data from one database to another or from a different format to a database format. IMPORT can also help a database administrator to backup or restore data from a file or source. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 143.

x86 only supports an installation on a 32-bit CPU architecture is the statement that best represents what the
"...x86.exe" means in the installation file. x86 is a term that refers to a family of processors or instruction sets that use 32-bit registers and memory addresses. x86 processors can only run software applications that are compatible with the 32-bit architecture. An installation file that has the suffix "...x86.exe" indicates that the file is an executable file that can only be installed on a 32-bit system. A 64-bit system can run both 32-bit and
64-bit applications, but a 32-bit system can only run 32-bit applications. References : The Official CompTIA IT Fundamentals (ITF+) Study Guide (FC0-U61), page 34.