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Computer Networks Overview

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Questions and Answers

What is the Internet?

A network of networks (correct)

A closed system with limited access

A single network connecting all devices worldwide

A local area network (LAN)

Which aspect is covered in the second half of the chapter about computer networks?

Brief history of computer networking

Hardware components of switches

Vulnerabilities in computer networks

Simple quantitative models for end-to-end throughput and delay (correct)

How are computer networks described in terms of vulnerabilities?

Vulnerable to many different types of attacks (correct)

Not prone to any vulnerabilities

Vulnerable to only one type of attack

Completely secure from all types of attacks

What are some key architectural principles in computer networking mentioned?

Protocol layering and service models Signup and view all the answers

What is the role of access networks in computer networking?

Connecting end systems to the network core Signup and view all the answers

Why is it important to consider transmission, propagation, and queuing delays in a computer network?

For simple quantitative modeling of throughput and delay Signup and view all the answers

What is the Internet primarily described as in terms of a networking infrastructure?

A computer network Signup and view all the answers

Which term is used in Internet jargon to refer to all connected devices?

Hosts or end systems Signup and view all the answers

What is the estimated number of Internet users worldwide in 2015?

Over 3.2 billion Signup and view all the answers

According to estimates, what is the projected number of devices connected to the Internet by 2020?

25 billion Signup and view all the answers

Which type of devices are increasingly being connected to the Internet apart from traditional desktop PCs and servers?

Home security systems and cars Signup and view all the answers

What percentage of the world population comprised Internet users in 2015?

Approximately 40% Signup and view all the answers