Chapter 29

Question 1

Does internet provide mainly connection less or connection oriented service

Answer 1

connection less service

Question 2

TCP/IP provide support for connection less service or connection oriented service

Answer 2

Both

Question 3

What happens in connection less service

Answer 3

Data sent as packets. Its an advance form of packet switching. Each packet take its route. Then destination collect all packet from different routes, order then and then process them. There is no need to have a connection between source and destination. It uses hubs.

Question 4

What is virtual packet

Answer 4

The packet travels over connection less service is virtual packet. These packets are created and managed by IP software. There is nothing to do with hardware technology.

Question 5

What is IP datagram

Answer 5

In terms of TCP/IP virtual packet is called IP datagram

Question 6

What is the format of IP datagram

Answer 6

header, data area

Question 7

What is the difference between IP datagram and frame based packet

Answer 7

Source and destination are IP based on IP datagram

Question 8

What is the purpose of address mask

Answer 8

To identify destination network, apply address mask to destination address and compare to network address in routing table.

Question 9

What is best-effort delivery

Answer 9

IP datagram and IP protocol guarantees best-effort delivery. It means IP software try his best to deliver from source to destination.

Question 10

What are 4 problems that IP do not guarantee to prevent

Answer 10

1. Duplicate datagrams
2. Delayed or out-of-order delivery
3. Corruption of data
4. Datagram loss (IP Packet loss)