The blinking symbol on the computer screen is called:
✅ Correct Answer:Cursor
Explanation: The blinking symbol is called the Cursor. It indicates the position where the next character will be typed or where an action will take place. It often appears as a vertical line (|) in text editors.
62
Which of the following is the largest unit of storage?
✅ Correct Answer:TB
Explanation: TB (Terabyte) is the largest unit among the options. The hierarchy is: KB (Kilobyte) < MB (Megabyte) < GB (Gigabyte) < TB (Terabyte). 1 TB is equal to 1024 GB. Large servers use Petabytes (PB) and Exabytes (EB).
63
Which device is used to input images into a computer?
✅ Correct Answer:Scanner
Explanation: A scanner is an input device that optically scans images, printed text, or handwriting and converts them into a digital image. This allows physical documents to be stored and edited on a computer.
64
What is the full form of IP?
✅ Correct Answer:Internet Protocol
Explanation: IP stands for Internet Protocol. It is the set of rules governing the format of data sent via the Internet or local network. An IP address acts as a unique identifier for devices on a network.
65
The keys QWERTY are associated with:
✅ Correct Answer:Keyboard
Explanation: QWERTY refers to the standard layout of keys on a keyboard. It is named after the first six letters on the top row of letters. It was designed in the 1870s for typewriters to prevent jamming and later adopted for computers.
66
Which of the following is NOT an Operating System?
✅ Correct Answer:Oracle
Explanation: Oracle is a database management system, not an operating system. Linux, Windows, and DOS are examples of operating systems that manage computer hardware and software resources. Oracle is software for handling data.
67
A 'Bug' in computer terminology means:
✅ Correct Answer:Error in program
Explanation: A 'Bug' refers to an error, flaw, or fault in a computer program or system that causes it to produce an incorrect result. The process of finding and fixing bugs is called 'debugging'. The term is attributed to Grace Hopper finding a moth in a relay.
68
URL stands for:
✅ Correct Answer:Uniform Resource Locator
Explanation: URL stands for Uniform Resource Locator. It is the address of a given unique resource on the Web. For example, 'https://www.google.com' is a URL. It consists of the protocol (http), domain name, and path.
69
Which device is used to connect a computer to the internet via telephone line?
✅ Correct Answer:Modem
Explanation: A Modem (Modulator-Demodulator) is used to connect a computer to the internet via telephone or cable lines. It converts digital signals from the computer into analog signals for transmission and vice versa. Routers distribute this connection.
70
The key F1 is generally used for:
✅ Correct Answer:Help
Explanation: In almost all software programs, pressing the F1 key opens the Help menu. It provides information and instructions on how to use the application. It is a standard shortcut across Windows environments.
71
1 Gigabyte (GB) is equal to:
✅ Correct Answer:1024 MB
Explanation: 1 Gigabyte (GB) is equal to 1024 Megabytes (MB). This is based on binary powers (2^30 bytes). It is a common unit for measuring hard drive capacity and RAM size. The next unit up is the Terabyte (TB).
72
GUI stands for:
✅ Correct Answer:Graphical User Interface
Explanation: GUI stands for Graphical User Interface. It allows users to interact with electronic devices through graphical icons and visual indicators instead of text-based command lines. Examples include Windows, macOS, and Android interfaces.
73
LAN stands for:
✅ Correct Answer:Local Area Network
Explanation: LAN stands for Local Area Network. It connects computers within a limited area such as a residence, school, or office building. Ethernet and Wi-Fi are the two most common technologies in use for LANs.
74
Which technology was used in Second Generation computers?
✅ Correct Answer:Transistors
Explanation: Second-generation computers (1956-1963) used Transistors. Transistors replaced vacuum tubes and were smaller, faster, cheaper, and more reliable. This allowed computers to become smaller and more efficient.
75
A computer virus is a:
✅ Correct Answer:Software Program
Explanation: A computer virus is a malicious software program (Malware). It is designed to replicate itself and spread to other computers. It can damage data, steal information, or disrupt system operations. Antivirus software is used to detect and remove them.
76
Which is the fastest memory in a computer?
✅ Correct Answer:Registers
Explanation: Registers are the fastest type of memory in a computer. They are located inside the CPU itself. They hold the data that the CPU is currently processing. The hierarchy of speed is: Registers > Cache > RAM > Hard Disk.
77
ALU stands for:
✅ Correct Answer:Arithmetic Logic Unit
Explanation: ALU stands for Arithmetic Logic Unit. It is a critical component of the CPU. It performs all arithmetic (addition, subtraction) and logical operations (AND, OR, NOT). It processes the actual data.
78
The process of starting a computer is called:
✅ Correct Answer:Booting
Explanation: Booting is the process of starting a computer. It involves loading the operating system from the hard disk into the main memory (RAM). A 'Cold Boot' is starting from the off state, while a 'Warm Boot' is restarting the computer.
79
Which key is used to refresh the active window?
✅ Correct Answer:F5
Explanation: The F5 key is commonly used to refresh or reload the active window or web page. F1 is typically used for Help. F2 is often used to rename a selected file. Function keys (F1-F12) have different functions depending on the software.
80
USB stands for:
✅ Correct Answer:Universal Serial Bus
Explanation: USB stands for Universal Serial Bus. It is an industry standard for connecting peripherals like keyboards, mice, and flash drives to a computer. It supports plug-and-play functionality. It can also transfer power to charge devices.