This document contains 20 questions about data communication, computer networks, and the Internet: 1) It asks about the key components of data communication including messages, senders, receivers, transmission mediums, and protocols. 2) It asks about different forms of data representation such as text, numbers, images, audio, and video. 3) It covers topics like distributed processing, different types of computer networks including LANs, MANs, and WANs, advantages of networking, network structures, topologies, network media, hubs bridges switches and routers, OSI and TCP/IP models, layers 3 and 4 of OSI, types of internet connections, sharing internet connections, blogs, URLs,

1. Questions from Chapter 1 – Data Comm., Networking and Internet
(Only points are given for answers )
1) Explain data communication components
(Message or data, sender, receiver, transmission medium, protocol)
2) What are different forms of data representation?
(Text, numbers, images, audio, video)
3) What is distributed processing?
4) Explain different types of computer networks.
(LAN, MAN, WAN)
5) What are advantages of networking?
Resource sharing, Upgradation cost, Security and Manageability,Workgroup Applications
6) Explain in brief different types of network structures / architecture
(Server based, Client server, Peer to peer)
7) Explain different types of topologies
(Star, Bus, Ring)
8) Write short note - network media
(Wired – twisted pair cable, coaxial cable, optical fiber. Wireless- electromagnetic waves)
9) Explain Hubs, Bridges, Switches, Routers
10) Explain OSI reference model.
(ISO, layers, 7 layers)
11) Explain TCP/IP model.
(Intro, 5 layers)
12) Explain layer 3 and layer 4 of OSI model.
13) What is internet? What are different types of internet connections?
(Dial up, Broadband, ISDN, T1, T3, GPRS, Wireless)
14) Write short note – Sharing of internet connection.
15) What is a blog?

2. 16) What is URL? Explain different parts of URL.
17) Explain different types of search engines.
(Crawler based, search directories, Meta search engines, specialized search engines.)
18) What are different methods of search?
(Advance search, Boolean search)
19) Explain different types of email services and parts of email address.
(Web based – Online, POP, and IMAP (?))
20) Short notes - IP address, Domain names, Scanning email for viruses.