Every Book Back multiple-choice question from Introduction to Computer Networks (12th Standard Computer Applications, Samacheer Kalvi) — each with the correct option highlighted and a clear, worked explanation. Free to read in English and Tamil.
Q1
A set of computers connecting together is called as ----------
- A. NetworkCorrect
- B. Server
- C. Hub
- D. Node
Explanation. A computer network is formed when two or more computers or devices are connected together to share data, hardware resources, and software applications.
Q2
Many discussions in an online forum leads to personal attacks and is called
- A. Hackers
- B. Virus
- C. Online war
- D. Flame warCorrect
Explanation. Heated exchanges or hostile personal attacks between users in online discussion forums or discussion groups are referred to as flame wars.
Q3
Wi-Fi is short name for
- A. Wireless FidelityCorrect
- B. Wired fidelity
- C. Wired fiber optic
- D. Wireless fiber optic
Explanation. Wi-Fi is a popular wireless networking technology that allows devices to connect to a local network and the internet without physical cables, standing for Wireless Fidelity.
Q4
Which among them was challenging to the business people on computer networking
- A. Hacking
- B. Viruses
- C. Both a & bCorrect
- D. none of this above
Explanation. Hacking and computer viruses both represent severe security challenges for businesses using computer networks, as they can compromise sensitive financial information and disrupt operations.
Q5
Which one of the following is not the social media
- A. GmailCorrect
- B. Facebook
- C. twitter
- D. Linkedin
Explanation. Gmail is an email service for personal and business messaging, whereas Facebook, Twitter, and LinkedIn are social media platforms designed for public content sharing and networking.
Q6
In mobile network, land areas for network coverage was distributed as
- A. Firmware
- B. cellsCorrect
- C. Range
- D. Service
Explanation. Mobile networks divide geographical land areas into a series of smaller contiguous sectors called cells, each containing its own signal transmitter.
Q7
Which one of the following are harmful to computer?
- A. Bloggers
- B. Browser
- C. HackersCorrect
- D. twitter
Explanation. Hackers represent a direct security threat, using their skills maliciously to infiltrate systems, intercept private information, or destroy data.
About these Introduction to Computer Networks questions
These are the Book Back multiple-choice questions for Introduction to Computer Networks from the Tamil Nadu State Board (Samacheer Kalvi) 12th Standard Computer Applications syllabus. Each question shows the correct option and an original, step-by-step explanation so you understand the method, not just the answer. Use the answer key above to jump to any question, then take the practice test to check yourself under exam-like conditions.
Frequently asked questions
How many MCQs are there in Introduction to Computer Networks?
This chapter has 7 book-back multiple-choice questions, each with the correct answer and a step-by-step explanation.
Are these 12th Standard Computer Applications MCQs free to practise online?
Yes. Every question, answer and explanation here is free, and you can also take them as a timed practice test.
Where can I find the Introduction to Computer Networks book-back answers?
The correct option for each question is highlighted on this page with a worked explanation, plus a quick answer-key summary at the top.
