When an organization decides to expand its business by selling products online, the IT department needs to ensure that the website is equipped to handle e-commerce transactions. This involves:
* Setting up a secure online payment system: Ensuring that payment gateways and encryption methods are in place to protect sensitive customer data.
* Scalability: Making sure the website infrastructure can handle increased traffic and transaction volumes without compromising performance.
* Integration: Ensuring the e-commerce platform is integrated with the organization's existing systems, such as inventory management, order fulfillment, and customer relationship management (CRM) systems.
* Compliance: Adhering to regulatory requirements and industry standards for online transactions, such as PCI DSS compliance for payment processing.
Therefore, making sure the website can handle e-commerce transactions is crucial for a successful online business expansion.
References
* Efraim Turban, Judy Whiteside, David King, and Jon Outland, "Introduction to Electronic Commerce and Social Commerce," Springer.
* Laudon, K.C. and Traver, C.G., "E-commerce 2020-2021: Business, Technology, Society," Pearson.

* TheCentral Processing Unit (CPU)is the primary component of a computer that performs most of the processing inside a computer.
* Carrying out the instructions of a computer program: The CPU executes program instructions, which are the basic tasks that tell the computer what to do.
* Containing an arithmetic logic unit (ALU): The ALU performs all arithmetic and logic operations, such as addition, subtraction, and comparison.
* The CPU also manages data flow between the computer's other components.
* It fetches instructions from memory, decodes them, and then executes them, which involves performing calculations and making decisions.
References:
* "Computer Organization and Design: The Hardware/Software Interface" by David A. Patterson and John L. Hennessy.
* "Modern Processor Design: Fundamentals of Superscalar Processors" by John Paul Shen and Mikko H.
Lipasti.

The System Development Life Cycle (SDLC) is a process used for planning, creating, testing, and deploying an information system. It involves several stages, including requirements gathering, system design, implementation, testing, deployment, and maintenance. The SDLC ensures that the system meets the needs of users and is developed in a structuredand efficient manner.

A floating-point data type is used for numerical calculations that require a decimal point, such as percentages.
In this case, to calculate 90% of the retail price of an item, a floating-point data type is necessary because it can represent both the whole number and the fractional part of the number, allowing for precise calculations.

* The employee needs to execute a program from the command line, which requires inputting commands into the computer.
* The primary device for inputting commands is the keyboard.
* Other options like the hard drive, speaker, and printer are not used for inputting commands.
* The hard drive is used for data storage.
* The speaker outputs sound.
* The printer outputs documents.
* Therefore, the correct peripheral device for this task is the keyboard.
References:
* "Computer Fundamentals" by Anita Goel, which discusses input devices and their uses.
* "The Principles of Information Systems" by Ralph Stair and George Reynolds, which details peripheral devices and their functions.