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4. Think and answer.
a. What is a network?
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b. What is a gateway?
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c. What are the various components of a communication system?
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d. Why do we need computer networks?
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e. Define topology. Explain any two types of topologies.
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f. What do you mean by protocol? Explain FTP and HTTPS.
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5. Differentiate between the following:
a. SMTP POP3
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b. LAN MAN
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c. Client-Server Network Peer-to-Peer Network
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Networking Concepts 21

