Section 3

Question 1

Network layer operates at which layer?

Answer 1

layer 3

Question 2

Main characteristic of transport layer is to

Answer 2

Check if TCP or UDP is being used and to check port number

Question 3

whats the difference between TCP and UDP

Answer 3

TCP is used if connection reliability is more important between two hosts

UDP is used if speed is more important between two hosts

Question 4

What does a transport layer do?

Answer 4

Breaks larger files into smaller segments so that the probability of transmission error is minimized.

Question 5

Routers operate at which OSI layer

Answer 5

layer 3

Question 6

Whats the most important information at the network layer

Answer 6

Source and destination IP address

Question 7

Network layer manages ?

Answer 7

Connectivity between two hosts and provides logical addressing( ip addressing)

Question 8

Example of layer 2 source technology

Answer 8

Ethernet cable

Question 9

Most important information at OSI layer 2

Answer 9

Source and destination layer 2 technology address

Question 10

what device operates at layer 2

Answer 10

Switches

Question 11

Data - link layer main characteristic

Answer 11

1) defines how data is formatted for transmission and how access to physical media is controlled

( how data is formatted) +( how access to information is controlled)

2) also includes error detection and correction to ensure reliable delivery of data

Question 12

Different layer 2 technologies use

Answer 12

different format for addressing

Question 13

Ethernet cables use what type of addressing

Answer 13

Mac addressing

Question 14

layer 1 of OSI layer is

Answer 14

Physical layer

Question 15

voltage levels, physical data rate and maximum transmission distance are some properties of system that can be found in

Answer 15

Physical layer ( layer 1)

Question 16

Cable is an example of

Answer 16

Physical layer

Question 17

what a protocol

Answer 17

Certain way that computers communicate with each other

Question 18

TCP/IP is

Answer 18

an acronym used for the set of network protocols

Question 19

Name OSI layer from order sent

Answer 19

7. Application layer
8. Presentation layer
9. Session layer
10. Transport Layer
11. Network Layer
12. Data-link layer
13. Physical layer

Question 20

Session layer does what ?

Answer 20

establishes, manages and terminates sessions between two hosts

Question 21

Application layer does what ?

Answer 21

establishes the availability of intended communication partner , synchronizes and establishes agreements on procedures for error recovery

Question 22

Presentation layer does what ?

Answer 22

ensures that information sent at the application layer of one system is readable by application layer on another.

Question 23

why is OSI used

Answer 23

How computer networking protocol work with each other