All Free Computer Science and IT MCQs with Answers

1171. An Email is a combination of_____________?

• A. Name and Address
• B. Name and Phone no
• C. User Name and Domain Name
• D. User Name and User id

Explanation: An email address combines a user name or local part with a domain name, separated by the @ symbol, such as student@example.com. A phone number or a second user ID is not part of this standard structure.

1172. Types of e-commerce____________?

• A. Business-to-Business (B2B)
• B. Consumer-to-Consumer (C2C)
• C. Business-to-Consumer (B2C)
• D. All of above

Explanation: Common e-commerce models include B2B, B2C, and C2C, representing business-to-business, business-to-consumer, and consumer-to-consumer transactions. Since each listed model is valid, the inclusive option is correct.

1173. ISP stands for___________?

• A. internet server provider
• B. internal server provider
• C. internet service provider
• D. insta service provider

Explanation: ISP means Internet Service Provider, the company or organization that provides access to the Internet. The other expansions either use the wrong term or are not standard technical expressions.

1174. Wifi Stands For_____________?

• A. Wireless Fidelity
• B. Wireless functioning
• C. Wireless function
• D. None of the above

Explanation: Wi-Fi is commonly expanded in basic computer texts as Wireless Fidelity and refers to wireless networking based on radio communication. Strictly, Wi-Fi is a brand name rather than an official acronym, but option A is the conventional exam answer.

1175. The World Wide Web was invented by____________?

• A. Tim Berners-Lee
• B. Bob Kahn
• C. Steve Jobs
• D. Bill Gates

Explanation: Tim Berners-Lee invented the World Wide Web, including its core ideas of web pages, hyperlinks, and the first web browser and server. Bob Kahn contributed to TCP/IP rather than inventing the Web.

1176. TCP/IP invented by_____________?

• A. Robert E. Kahn
• B. Vint Cerf
• C. Alan turing
• D. A & B

Explanation: TCP/IP was jointly developed by Robert E. Kahn and Vint Cerf, so both A and B are correct. Their work produced the protocol suite that underpins the Internet.

1177. In_______________mode, the communication channel is used in both directions at the same time?

• A. Full-duplex
• B. Simplex
• C. Half-duplex
• D. None of the above

Explanation: Full-duplex communication permits simultaneous transmission in both directions, like a telephone call. Half-duplex permits both directions but not at the same time, while simplex permits only one direction.

1178. Fourth generation mobile technology provides enhanced capabilities allowing the transfer of both____________data, including full-motion video, high-speed internet access, and video conferencing.

• A. video data and information
• B. voice and non-voice
• C. music and video
• D. video and audio

Explanation: Fourth-generation mobile networks support both voice and non-voice data services, including high-speed Internet, video calls, and multimedia transfer. “Voice and non-voice” is the broad category that includes these examples.

1179. Which of these is not a means of personal communication on the internet?

• A. Chat
• B. Instant messaging
• C. Insta notes
• D. Electronic mail

Explanation: Chat, instant messaging, and electronic mail are established internet communication methods. “Insta notes” is not generally recognized as a standard means of personal internet communication.

1180. _______________is the most important/powerful computer in a typical network?

• A. Desktop
• B. Network client
• C. Network server
• D. Network station Word Processing Software

Explanation: A network server provides shared services and resources, such as files, applications, or printers, to connected clients. A desktop or network client normally consumes these services rather than controlling them.