Computer Networking: - Ch1

What is the main goal of the introduction chapter?

• To provide a detailed history of the Internet

• To introduce the concept of network protocols

• To give an overview of the Internet and its terminology

• To explain the structure of the network core

What are some examples of Internet-connected devices mentioned in the text?

• Smart speaker and digital assistant

• IP picture frame and Internet refrigerator

• Smart thermostat and home security system

• Smartwatch and fitness tracker

What is the main function of the network core in the Internet structure?

• To connect end systems to access ISPs

• To provide dedicated resources for each user

• To determine the source-destination route for packets

• To allocate resources for circuit switching

What is the advantage of packet switching over circuit switching?

• Provides circuit-like behavior

• Allows more users to use the network

• No congestion and packet loss

• Guaranteed bandwidth for each user

How is the resulting network of networks in the Internet described?

• Limited to a few interconnected ISPs

• Driven by technological advancements

• Complex and driven by economics and national policies

• Simple and straightforward

What is the purpose of layering in a network system?

• To increase the transparency of the system

• To limit the maintenance and updating of the system

• To allow identification and relationship of system's pieces

• To make the system more complex

Which layer in the Internet protocol stack is responsible for routing of datagrams from source to destination?

• Network layer

• Transport layer

• Link layer

• Application layer

What is the purpose of the presentation and session layers in the ISO/OSI reference model?

• Data transfer between neighboring network elements

• Synchronization and recovery of data exchange

• Data transfer between end systems

• Interpretation of data meaning and machine-specific conventions

What is the average end-end throughput when the link capacity is Rc bits/sec and Rs bits/sec?

• Rc or Rs bits/sec

• Rc, Rs, or R/10 bits/sec

• Rs bits/sec

• Rc bits/sec

What is the purpose of an Internet exchange point (IXP)?

• To bring services and content close to end users

• To connect regional networks to ISPs

• To connect each access ISP to one global transit ISP

• To connect each access ISP to every other access ISP