Free Networking and Internet MCQs with Answers

101. The scrambling of code is known as___________?

• A. Encryption
• B. a firewall
• C. Scrambling
• D. Password proofing

Explanation: Encryption transforms readable data into an encoded form so unauthorized people cannot understand it. A firewall controls network access, so it does not itself mean scrambling code.

102. Hardware or software designed to guard against unauthorized access to a computer network is known as a(n)___________?

• A. Hacker-proof program
• B. Firewall
• C. Hacker-resistant server
• D. Encryption safe wall

Explanation: A firewall may be hardware, software, or both, and it filters network traffic according to security rules. Its purpose is to block unauthorized access while permitting approved communication.

103. What is the most common tool used to restrict access to a computer system?

• A. User logins
• B. Passwords
• C. Computer keys
• D. Access-control software

Explanation: Passwords are the most common basic method of restricting access because they authenticate a user's claimed identity. User logins identify accounts, but the password is the secret used to protect them.

104. ____________is the measurement of things such as fingerprints and retinal scans used for security access?

• A. Biometrics
• B. Bio measurement
• C. Computer security
• D. Smart weapon machinery

Explanation: Biometrics uses measurable physical or behavioural characteristics, such as fingerprints, iris patterns, or retinal scans, to verify identity. The other choices are not standard names for this security method.

105. A modem is connected to_____________?

• A. a telephone line
• B. a keyboard
• C. a printer
• D. a monitor

Explanation: A modem converts digital computer data to signals suitable for transmission over a telephone line and converts incoming signals back. It is therefore connected to the telephone line for communication.

106. The process of transferring files from a computer on the Internet to your computer is called_____________?

• A. Downloading
• B. uploading
• C. FTP
• D. JPEG

Explanation: Downloading means receiving files from an Internet computer onto your own computer, while uploading sends files in the opposite direction. FTP is a file-transfer protocol, not the name of the process itself.

107. A device that connects to a network without the use of cables is said to be___________?

• A. Distributed
• B. free
• C. centralized
• D. none of these

Explanation: A network connection without cables is normally called wireless, but that word is missing from the options. Therefore, none of the listed choices correctly names the device or connection.

108. _____________are used to identify a user who returns to a Website?

• A. Cookies
• B. Plug-ins
• C. Scripts
• D. ASPs

Explanation: Cookies are small pieces of data stored by a website or browser that help recognise a returning user. Plug-ins extend browser functions, while scripts are programs executed on a webpage.

109. All of the following are examples of real security and privacy risks EXCEPT____________?

• A. hackers
• B. Spam
• C. Viruses
• D. identity theft

Explanation: Hackers, viruses, and identity theft directly threaten computer security or personal privacy. Spam is unwanted bulk messaging and is mainly an annoyance, although it can sometimes carry malicious links.

110. A device, which is not connected to CPU, is called as___________?

• A. land-line device
• B. On-line device
• C. Off-line device
• D. Device

Explanation: An off-line device is not directly connected to, or under the immediate control of, the CPU. An online device has an active connection to the computer system.