Chapter 1 - Introduction

What is meant by the "Nuts and Bolts" View of the internet?

p. 4

 What is meant by the "Service View" on the Internet?

What is a Protocol?

Give a Definition an explain, how Protocols are described.

What are end systems?

How to connect end systems to edge router?

Describe how DSL works.

What Types of Acces Networks are there? Name all 

Describe how Cable Network works.

What does FDM mean?

How does a home network work?
Fill in the gaps and use the picture for your explaination.

Describe how an Enterprise Access Network works.

 Describe how a Wireless Access Network works. Also name both general types of wireless access networks.

 Give short definitions of the following words:
Bit, Physical Media, Guided Media, Unguided Media, Twisted Pair (Cat 5 and Cat 6)

Explain / Describe the three common types of links.

What is a transmission rate of a link? 
How long does it take to send a packet?

What are packet switches? 
Determine the difference between two of those common examples.

What is an ISP? 

What is the API? 

What is meant by "Store-and-Forward-Transmission" and what problem does it lead to? 

 Explain how Packet Switching works: from the sending of a message to the receiver.

Explain how Circuit Switching works, name an example and give short definition of "Multiplexing" in this context 

Name and briefly explain the two types of Multiplexing

What are the pros and cons of Time-Division Multiplexing? 

 Compare Circuit Switching to Packet Switching (Pros and cons for both). For what kind of networks is which one better suited?

For a packet of lenght L=7.5 MBit and a transmission rate of R=1.5 Mbit/s, how long is the roundtrip transmission delay, using always the same packet?

How long does it take to send a file of 1000 kbit over a packet-switched network from host A to host B?

Packet length: L=100kbit
Transmission Rate: R=1Mbit/s
Other traffic: 900kbit/s on each link
5ms propagation delay per hop
5 hops bzw. links (alle mit der gleichen transmission rate)

Explain the difference of Propagation delay and transmission delay.

How is the Internet structured with regards to the ISPs?

How does packet loss occur? What happens, if a packet gets lost?

Name and briefly explain the four sources of packet delay.

 When is a Queuing Delay small or large? Give a formula to calculate this

Give a short definition of throughput and its variations. 

What  is a Bottleneck link?

What is the throughput of an end-end connection from a Server to a Client over a router, that is used for 9 other connections?

What does a Layer do? 

What are the Pros and Cons of Layering? 

 What are the layers of the Internet Protocol Stack and what do they do?

What are the two extra layers of the ISO/OSI Reference Model? What do the two layers do? How does the complete stack look like?