Computer Networks NCERT CS Class 12 Solution

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Q1. Expand the following:
(a) ARPANET
(b) MAC
(c) ISP
(d) URI




Q2. What do you understand by the term network?




Q3. Mention any two main advantages of using a network of computing devices.



Q4. Differentiate between LAN and WAN.




Q5. Write down the names of few commonly used networking devices.



Q6. Two universities in different States want to transfer information. Which type of network they need to use for this?



Q7. Define the term topology. What are the popular network topologies?



Q8. How is tree topology different from bus topology?



Q9. Identify the type of topology from the following:
a) Each node is connected with the help of a single cable.
b) Each node is connected with central switching through independent cables.




Q10. What do you mean by a modem? Why is it used?



Q11. Explain the following devices:
(a) Switch
(b) Repeater
(c) Router
(d) Gateway
(e) NIC



Q12. Draw a network layout of star topology and bus topology connecting five computers.



Q13. What is the significance of MAC address?



Q14. How is IP address different from MAC address? Discuss briefly.



Q15. What is DNS? What is a DNS server?



Q16. Sahil, a class X student, has just started understanding the basics of Internet and web technologies. He is a bit confused in between the terms “World Wide Web” and “Internet”. Help him in understanding both the terms with the help of suitable examples of each.