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| Section | Weight | Objectives |
|---|---|---|
| Information Security | 15% | - Threats, vulnerabilities, and risks - Data protection and compliance basics - Security controls: access, encryption, backups |
| Software and Operating Systems | 20% | - File management, installation, and updates - OS fundamentals: Windows, macOS, Linux - Types of software: system vs application |
| Data Management and Business IT | 10% | - Databases and data storage concepts - IT infrastructure, continuity, and support |
| Networking Concepts | 20% | - Network types, topologies, and protocols - Internet, cloud, and remote access technologies - TCP/IP, IP addressing, and connectivity |
| Introduction to IT as a Discipline | 15% | - Ethics and professional responsibilities in IT - IT roles and career paths - IT department functions and business support |
| Computer Hardware | 20% | - Core components: CPU, memory, storage - Input/output devices and peripherals - System architecture and performance factors |
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NEW QUESTION # 90
Which part of a computer system performs operations on data from all applications run by the computer?
Answer: D
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 # 91
What type of a system requirement involves preventing unauthorized access to data?
Answer: B
Explanation:
*Unauthorized access refers to gaining entry or access to a system, physical or electronic, without the permission of the owner or administrator.
*Security is the type of system requirement that involves preventing unauthorized access to data.
*Security measures include:
oAuthentication: Verifying user identity.
oEncryption: Protecting data from unauthorized viewing.
oAccess controls: Limiting who can access specific resources.
oFirewalls: Filtering network traffic.
*Ensuring security helps safeguard sensitive information and maintain data integrity.
References:
1.Unauthorized Access: Risks, Examples, and 6 Defensive Measures
2.How to Prevent Unauthorized Access: 10 Best Practices
3.Threat Picture: Unauthorized Access Prevention
4.PMC: Protecting Information with Cybersecurity
5.Cyberpedia: Unauthorized Data Access
1: Unauthorized Access: Risks, Examples, and 6 Defensive Measures 2: How to Prevent Unauthorized Access: 10 Best Practices 3: Threat Picture: Unauthorized Access Prevention 4: PMC: Protecting Information with Cybersecurity 5: Cyberpedia: Unauthorized Data Access
NEW QUESTION # 92
What is the correct definition of a join query?
Answer: C
Explanation:
A join in the context of a database, specifically SQL, is an operation that combines rows from two or more tables based on a related column between them. The purpose of a join is to retrievedata that exists across multiple tables which share a common field or key. The process typically involves the following steps:
1.Identify the Tables: Determine the tables that you want to join.
2.Determine the Common Column(s): Find the column(s) that the tables share, which will be used to match rows.
3.Choose the Type of Join: Decide on the type of join that suits your needs (INNER, LEFT, RIGHT, FULL).
4.Construct the Join Query: Write the SQL statement that specifies the join condition using the ON keyword.
5.Execute the Query: Run the query in the database to retrieve the combined results.
For example, if you have an Orders table and a Customers table, and both have a CustomerID column, you can join them on this column to retrieve a list of orders along with the customer information for each order.
References: The definition and explanation are based on standard SQL documentation and educational resources such as W3Schools1 and GeeksforGeeks2, which provide comprehensive guides on SQL joins.
NEW QUESTION # 93
What are three operating systems that are commonly used today?
Choose 3 answers
Answer: A,B,E
Explanation:
1.Microsoft Windows: Developed and marketed by Microsoft, Windows is the most widely used desktop operating system globally. It accounts for nearly 72% market share for desktop and laptop computers.
Windows provides an intuitive and user-friendly graphical desktop, making it easy to use and navigate. It is versatile and supports various tasks such as word processing, browsing, gaming, software development, video editing, and more1.
2.Linux: Linux is a popular open-source operating system. It was developed by programmer Linus Torvalds in
1991. Linux runs in many organizations, private offices, mobiledevices, supercomputers, and over the internet.
It already contains almost all the features of the UNIX OS and has additional features. Various distributions of Linux exist, including Ubuntu, Debian, Solus, and Linux Mint. Linux is known for its security, compatibility, and flexibility2.
3.Android: Android is one of the most common operating systems today. It powers smartphones, tablets, and other smart devices. Developed by Google, Android is based on the Linux kernel. It dominates the mobile market and offers a wide range of applications and features for users2.
Comprehensive Detailed Step by Step Explanation:
1.Microsoft Windows:
oWindows is developed and maintained by Microsoft.
oIt provides a graphical user interface (GUI) and is user-friendly.
oWindows 10 is the current version, with earlier versions like Windows XP, Windows 8, and Windows 7.
oAdvantages: Compatibility with hardware, pre-loaded software, ease of use. Disadvantages: Cost, security threats, vulnerability to viruses.
2.Linux:
oDeveloped by Linus Torvalds in 1991.
oOpen-source and free of cost.
oUsed in various environments (organizations, supercomputers, etc.).
oDistributions like Ubuntu, Debian, and Linux Mint.
oAdvantages: Security, compatibility, flexibility. Disadvantages: Multiple versions, not ideal for gamers.
3.Android:
oDeveloped by Google.
oBased on the Linux kernel.
oDominates the mobile market.
oOffers a wide range of apps and features.
References:
1.Toppr: Commonly Used Operating System
2.Tecmint: Most Used Operating Systems in the World1
NEW QUESTION # 94
What is a component of IT infrastructure?
Answer: B
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 # 95
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