NTS Basic Computer Knowledge 2 — Questions and Answers
Question 1: Which device is used to convert digital signals to analog signals for transmission over telephone lines?
- Router
- Modem (Correct answer)
- Switch
- Hub
Correct answer: Modem
A modem (modulator-demodulator) converts digital signals to analog and vice versa.
A modem (MOdulator-DEModulator) is a hardware device that converts digital data from a computer into analog signals for transmission over telephone lines, and converts incoming analog signals back to digital. Routers direct network traffic, switches connect network devices, and hubs broadcast data. Basic networking concepts are tested in NTS computer knowledge.
Question 2: What is the full form of URL?
- Universal Resource Locator
- Uniform Resource Locator (Correct answer)
- Unified Resource Link
- Universal Reference Link
Correct answer: Uniform Resource Locator
URL stands for Uniform Resource Locator, used to specify addresses on the internet.
URL stands for Uniform Resource Locator. It is the address used to access resources on the internet, such as web pages. A URL typically includes the protocol (http/https), domain name, and path. This is a commonly tested IT abbreviation in NTS exams.
Question 3: Which of the following is an input device?
- Monitor
- Printer
- Scanner (Correct answer)
- Speaker
Correct answer: Scanner
A scanner is an input device that converts physical documents into digital format for the computer.
Input devices send data to a computer. A scanner captures images or text from physical documents and converts them into digital data. Monitor, printer, and speaker are all output devices that receive data from the computer to display, print, or play audio. Understanding input vs output devices is fundamental NTS computer knowledge.
Question 4: What does 'HTTP' stand for?
- Hyper Text Transfer Protocol (Correct answer)
- High Tech Transfer Protocol
- Hyper Text Transmission Protocol
- High Transfer Text Protocol
Correct answer: Hyper Text Transfer Protocol
HTTP stands for Hyper Text Transfer Protocol, the foundation of data communication on the web.
HTTP (Hyper Text Transfer Protocol) is an application-layer protocol for transmitting hypermedia documents on the World Wide Web. It was designed for communication between web browsers and web servers. HTTPS is the secure version using encryption. Internet protocol abbreviations are regularly tested in NTS.
Question 5: Which key combination is used to paste copied text in Windows?
- Ctrl + X
- Ctrl + V (Correct answer)
- Ctrl + C
- Ctrl + P
Correct answer: Ctrl + V
Ctrl + V is the keyboard shortcut for pasting in Windows applications.
Common Windows keyboard shortcuts: Ctrl + C (Copy), Ctrl + X (Cut), Ctrl + V (Paste), Ctrl + P (Print). Ctrl + V pastes the most recently copied or cut content from the clipboard. These basic computer operation shortcuts are frequently tested in NTS computer knowledge sections.
Question 6: Which of the following is NOT an operating system?
- Windows
- Linux
- Oracle (Correct answer)
- macOS
Correct answer: Oracle
Oracle is a database management system, not an operating system. Windows, Linux, and macOS are all operating systems.
Oracle Corporation is known primarily for its database management system (Oracle Database). While Oracle does have an OS (Oracle Linux), 'Oracle' by itself refers to the database product. Windows (Microsoft), Linux (open source), and macOS (Apple) are all well-known operating systems. Distinguishing between software categories is a common NTS question.
NTS Basic Computer Knowledge 2
Which device is used to convert digital signals to analog signals for transmission over telephone lines?