Data Communication NCERT CS Class 12 Solution

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Q1. What is data communication? What are the main components of data communication?



Q2. Which communication mode allows communication in both directions simultaneously?



Q3. Among LAN, MAN, and WAN, which has the highest speed and which one can cover the largest area?



Q4. What are three categories of wired media? Explain them.



Q5. Compare wired and wireless media.



Q6. Which transmission media carries signals in the form of light?



Q7. List out the advantages and disadvantages of optical fiber cable.



Q8. What is the range of frequency for radio waves?



Q9. 18 Gbps is equal to how many Bits per second?



Q10. HTTP stands for?



Q11. Write short note on the following:
(a) HTTP
(b) Bandwidth
(c) Bluetooth
(d) DNS
(e) Data transfer rate



Q12. What is protocol in data communication? Explain with an example.



Q13. A composite signal contains frequencies between 500 MHz and 1GHz. What is the bandwidth of a signal?