Which of the following is a characteristic of cloud computing?
Cloud computing offers scalable resources, allowing on-demand access to computing power and storage over the internet, unlike local storage or fixed systems.
What is the binary equivalent of the octal number 7?
Octal 7 equals decimal 7. Binary for 7: 7 ÷ 2 = 3 remainder 1, 3 ÷ 2 = 1 remainder 1, 1 ÷ 2 = 0 remainder 1, so 111.
What is a primary function of a database management system?
A DBMS enables data manipulation, including storage, retrieval, and updates, using tools like SQL, unlike the other options.
What is the purpose of a conditional statement in programming?
Conditional statements (e.g., if-else) allow programs to execute code based on whether conditions are true, enabling decision-making.
Which of the following is a peripheral device?
A printer is a peripheral device for input or output, unlike core components like CPU, RAM, or motherboard.
What does URL stand for in web browsing?
A URL (Uniform Resource Locator) specifies the address of a web resource, including its protocol (e.g., http://).
Which feature characterizes first-generation computers?
First-generation computers (1940–1956) used vacuum tubes for processing, which were bulky and unreliable.
In programming, what is a variable?
A variable is a named memory location that stores data, which can be modified during program execution.
Which of the following is a network topology?
Star topology connects all devices to a central hub, unlike cloud, server, or protocol, which are not topologies.
What is the hexadecimal equivalent of the binary number 1010?
Binary 1010 = decimal 10 (8 + 2). Hexadecimal for 10 is A.
Which is an example of a mobile operating system?
Android is a mobile operating system for smartphones, unlike Windows 10, Linux (desktop/server), or Excel (software).
What is the purpose of a debugger in programming?
A debugger helps programmers identify and fix errors by stepping through code and inspecting variables.
Which of the following is a computer port?
USB is a port for connecting peripherals, unlike RAM, CPU, or BIOS, which are internal components.
What is the function of a router in a network?
A router directs data packets between networks, like a local network and the internet, using IP addresses.
Which characteristic defines ROM?
ROM (Read-Only Memory) is non-volatile and primarily read-only, storing permanent instructions, unlike volatile RAM.
What does TCP stand for in networking?
TCP ensures reliable data transmission by establishing connections and checking for errors.
Which is a data processing method?
Batch processing collects, processes, and outputs data in groups, unlike routing, debugging, or styling.
What is the result of the binary addition 1011 + 10?
1011 (11) + 10 (2) = 13. Binary for 13: 13 ÷ 2 = 6 remainder 1, 6 ÷ 2 = 3 remainder 0, 3 ÷ 2 = 1 remainder 1, 1 ÷ 2 = 0 remainder 1, so 1101.
Which is a programming paradigm?
Object-oriented programming is a paradigm using objects and classes, unlike HTML, SQL, or CSS, which are languages for other purposes.
What is the purpose of an antivirus program?
An antivirus program detects and removes malware, protecting the system from threats like viruses.
Which is a type of software license?
Open-source licenses allow access, modification, and distribution of source code, unlike routers, firewalls, or protocols.
What is the decimal equivalent of the hexadecimal number 1A?
Hex 1A = (1×16¹) + (10×16⁰) = 16 + 10 = 26.
What characterizes a mainframe computer?
Mainframes are highly reliable, processing large data volumes for enterprises, unlike single-user or portable systems.
What is the purpose of a function in programming?
A function is a reusable code block for a specific task, enhancing modularity.
Which is a wireless networking standard?
Wi-Fi (IEEE 802.11) enables wireless device connections, unlike Ethernet (wired), USB, or HDMI.
What is the role of a primary key in a database?
A primary key uniquely identifies each record, ensuring no duplicates and aiding retrieval.
Which is a type of computer crime?
Hacking involves unauthorized system access, often maliciously, unlike debugging, compiling, or networking.
What is the octal equivalent of the binary number 1100?
Binary 1100 = decimal 12 (8 + 4). Octal for 12: 12 ÷ 8 = 1 remainder 4, so 14. [Note: Original answer was incorrect; corrected to C.]
Which is a relational database management system?
Oracle is a relational DBMS for managing databases, unlike Photoshop, Excel, or Word.
What is the purpose of a MAC address?
A MAC address uniquely identifies a device’s hardware for network communication.
What is a feature of a word processor?
Word processors enable text formatting, including fonts and styles, unlike calculation or image editing.
What is the binary equivalent of the decimal number 9?
Decimal 9 to binary: 9 ÷ 2 = 4 remainder 1, 4 ÷ 2 = 2 remainder 0, 2 ÷ 2 = 1 remainder 0, 1 ÷ 2 = 0 remainder 1, so 1001.
Which is a type of backup?
A full backup copies all data, providing a complete restore point, unlike the other options.
What is the purpose of a compiler?
A compiler translates high-level code into machine language for execution, unlike interpreters or debuggers.
Which is a type of computer network?
PAN (Personal Area Network) connects personal devices, like via Bluetooth, unlike SQL, HTML, or CSS.
What is the hexadecimal equivalent of the decimal number 20?
Decimal 20 to hex: 20 ÷ 16 = 1 remainder 4, so 14.
What is a feature of a microcomputer?
Microcomputers, like PCs, are designed for single users, unlike mainframes or supercomputers.
What is the purpose of a hyperlink on a webpage?
Hyperlinks connect webpages to other resources, enabling navigation via clickable elements.
Which is a type of memory?
Cache is high-speed memory for frequently accessed data, unlike routers, firewalls, or protocols.
What is the purpose of a spreadsheet formula?
Spreadsheet formulas, like =SUM(A1:A10), perform calculations, such as summing or averaging data.
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