Chapter 35

Question 1

Does checksum field in UDP optional

Answer 1

Yes

Question 2

When checksum field is checked on destination

Answer 2

When it has non-zero value

Question 3

What is pseudo header

Answer 3

It is added in checksum field of UDP. It contains source and destination addresses, so if IP address lost during transmission, pseudo header can resolve this issue.

Question 4

Does UDP data area encapsulated inside IP data area and IP data area encapsulated in frame data

Answer 4

Yes

Question 5

What is more reliable, TCP or UDP

Answer 5

TCP

Question 6

Reliability is function of which layer

Answer 6

Transport layer

Question 7

Does TCP provide connection oriented service

Answer 7

Yes

Question 8

Does IP connection less

Answer 8

Yes

Question 9

What is point-to-point communication

Answer 9

There is always 2 points for communication to take place

Question 10

Does TCP point-to-point communication

Answer 10

Yes

Question 11

What is graceful connection shutdown

Answer 11

TCP guarantee that it will provide all necessary data before shut down and there is no data loss.

Question 12

What are virtual connection

Answer 12

The virtual connections are not provided by underlying software and hardware. These connections are result of TCP software. TCP software create illusion of connection.

Question 13

What is format of communication between TCP and IP

Answer 13

packet

Question 14

What are 2 major problems on transport protocol

Answer 14

1. Computer reboot during transmission

2. packets duplicated