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NEW QUESTION # 100
What is a component of IT infrastructure?
Answer: A
Explanation:
*Verified Answer: A component of IT infrastructure is networks.
*Explanation: Networks play a crucial role in connecting various elements of an IT system, enabling communication and data exchange.
* Therefore, the correct answer is A. Networks.
NEW QUESTION # 101
Which part of a computer system performs operations on data from all applications run by the computer?
Answer: A
Explanation:
The central processing unit, or CPU, is the primary component responsible for performing operations on data for all applications running on a computer. In Information Technology fundamentals, the CPU is often called the brain of the computer because it executes program instructions, performs arithmetic and logical operations, and controls the overall flow of processing. When an application runs, its instructions are fetched from memory, decoded, and executed by the CPU using key internal units such as the control unit and the arithmetic logic unit. RAM supports the CPU by holding active programs and data temporarily for fast access, but RAM does not perform processing itself. ROM stores firmware instructions such as startup routines, but it is not used for general application processing. A GPU is specialized for highly parallel tasks like graphics rendering and certain compute workloads, but it is not the main processor for all applications. Therefore, the component that performs operations on data from all applications is the CPU.
NEW QUESTION # 102
What is the name for computer code that humans can understand?
Answer: C
Explanation:
High-level programming language is the term for computer code that humans can understand. In Information Technology, high-level languages are designed to be readable and closer to natural language and mathematical notation than the binary instructions used by hardware. Examples include Python, Java, C#, and JavaScript. High-level languages use keywords, structured syntax, and abstractions that allow programmers to focus on problem solving rather than on hardware-specific details like memory addresses and CPU registers.
This improves development speed, reduces errors, and makes software easier to maintain. High-level code must be translated into machine language before it can run on a computer. This translation can occur through compilation or interpretation. Compiled language and interpreted language describe how code is executed, not whether it is human-readable. Machine language is the lowest-level code expressed in binary and is not easily understood by humans. Therefore, the correct answer for human-understandable code is high-level programming language.
NEW QUESTION # 103
Which component is part of the system unit?
Answer: B
Explanation:
The system unit refers to the main computer case and the internal components housed inside it. In Information Technology hardware terminology, the system unit contains the core electronic parts required for processing and storage, including the motherboard, CPU, RAM, storage drives, power supply, and expansion cards. The motherboard is a central internal component of the system unit because it is the main circuit board that holds and connects major hardware parts through sockets, slots, and buses. By contrast, a keyboard is an external input peripheral, a monitor is an external output display device, and a printer is an external output peripheral used for hard-copy printing. While these peripherals are essential for user interaction, they are not considered part of the system unit itself. Understanding this distinction is important for tasks such as hardware troubleshooting, upgrades, and system assembly, where internal components are serviced within the system unit enclosure. Therefore, the component that is part of the system unit is the motherboard.
NEW QUESTION # 104
Which aspect of the CIA Triad requires that data are correct?
Answer: D
Explanation:
1.Integrity: This principle focuses on maintaining the accuracy and trustworthiness of data. It ensures that data remains unaltered and free from corruption. Key points related to integrity:
oData Accuracy: Integrity ensures that data reflects the true state of information. Any unauthorized changes or alterations are detected and prevented.
oHash Functions: Hash functions are commonly used to verify data integrity. These functions generate a fixed-size hash value (checksum) based on the original data. If any part of the data changes, the hash value will also change, indicating potential tampering.
oDigital Signatures: Digital signatures provide a way to verify the integrity of electronic documents. They use asymmetric encryption to sign data, ensuring that it has not been altered since the signature was applied.
oData Validation: Implementing input validation and proper access controls helps maintain data integrity by preventing unauthorized modifications.
2.Confidentiality and Availability:
oConfidentiality: This principle ensures that only authorized users can access sensitive data. It focuses on keeping information private and restricting access.
oAvailability: Availability ensures that authorized users can access data when needed. It prevents data from being unavailable due to system failures, attacks, or other disruptions.
3.Balancing the Triad:
oWhile all three principles are essential, they can sometimes conflict with each other. For example:
Enhancing confidentiality (e.g., strong encryption) may impact availability (e.g., longer decryption times).
Rigorous integrity checks can affect system performance.
oOrganizations must strike a balance based on their specific security requirements.
References
*CSO Online: The CIA triad: Definition, components, and examples
*Comparitech: What is the CIA triad - confidentiality, integrity, and availability?
*Preventive Approach: CIA Triad: A Comprehensive Guide for Beginners
NEW QUESTION # 105
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