All Free Computer Science and IT MCQs with Answers

1091. WAN stands for_____________?

• A. Wap Area Network
• B. Wide Area Network
• C. Wide Array Net
• D. Wireless Area Network

Explanation: WAN means Wide Area Network, a network that covers a large geographical area such as cities, countries or continents. The other expansions are not standard networking terms.

1092. WWW stands for___________?

• A. World Whole Web
• B. Wide World Web
• C. Web World Wide
• D. World Wide Web

Explanation: WWW expands to World Wide Web, the collection of interlinked web pages and resources accessed through the Internet. The other options merely rearrange these words incorrectly.

1093. Who is the father of Internet ?

• A. Chares Babbage
• B. Vint Cerf
• C. Denis Riche
• D. Martin Cooper

Explanation: Vint Cerf, together with Bob Kahn, is widely known as a father of the Internet for major contributions to TCP/IP. Charles Babbage is associated with early computing, not the Internet.

1094. How do you enable Caret Browsing in a browser?

• A. Press the F7 key
• B. Press the F5 key
• C. Press the Ctrl key
• D. Press the Alt key

Explanation: Pressing F7 toggles Caret Browsing in most major browsers, placing a movable text cursor on web pages. The other listed keys do not enable this browser feature.

1095. What is the purpose of Caret Browsing?

• A. To navigate through web pages quickly
• B. To navigate through web pages using a keyboard
• C. To navigate through web pages using a mouse
• D. To navigate through web pages using a touchscreen

Explanation: Caret Browsing places a text cursor on a web page so users can select and move through content with keyboard keys. It is therefore keyboard-based rather than mouse- or touchscreen-based navigation.

1096. Which of the following is a benefit of Caret Browsing?

• A. It allows users to navigate through web pages quickly
• B. It allows users to navigate through web pages using a keyboard
• C. It allows users to navigate through web pages using a mouse
• D. It allows users to navigate through web pages using a touchscreen

Explanation: A key benefit of Caret Browsing is that users can move through and select web-page text using the keyboard. It is especially useful when mouse navigation is inconvenient or unavailable.

1097. What is the function of a firewall in computer networking?

• A. Monitor website traffic
• B. Block unwanted email
• C. Protect against unauthorized access and threats
• D. Increase internet speed

Explanation: A firewall filters network traffic according to security rules, helping prevent unauthorized access and block threats. It does not primarily block email or increase internet speed.

1098. UTP stands for

• A. Unshielded Transmission Protocol
• B. Unshielded Twisted Pair
• C. Unshielded Transfer Pair
• D. Unshielded T-line Protocol

Explanation: UTP means Unshielded Twisted Pair, a common copper cable containing twisted wire pairs without extra shielding. Twisting reduces electromagnetic interference between the wires.

1099. In 1997, which technological design was named after a Viking king?

• A. Modem
• B. McAfee
• C. Bluetooth
• D. Microsoft

Explanation: Bluetooth was named after Harald Bluetooth, a Viking king known for uniting parts of Denmark and Norway. The technology similarly aims to unite or connect different devices.

1100. css stands for ?

• A. Cascading Style Sheets
• B. casecading simple sheet
• C. casecading sheets style
• D. None of These

Explanation: CSS means Cascading Style Sheets, the language used to control the presentation and layout of web pages. The other expansions are misspellings or incorrect word orders.