Section 3 Flashcards
Network layer operates at which layer?
layer 3
Main characteristic of transport layer is to
Check if TCP or UDP is being used and to check port number
whats the difference between TCP and UDP
TCP is used if connection reliability is more important between two hosts
UDP is used if speed is more important between two hosts
What does a transport layer do?
Breaks larger files into smaller segments so that the probability of transmission error is minimized.
Routers operate at which OSI layer
layer 3
Whats the most important information at the network layer
Source and destination IP address
Network layer manages ?
Connectivity between two hosts and provides logical addressing( ip addressing)
Example of layer 2 source technology
Ethernet cable
Most important information at OSI layer 2
Source and destination layer 2 technology address
what device operates at layer 2
Switches
Data - link layer main characteristic
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
Different layer 2 technologies use
different format for addressing
Ethernet cables use what type of addressing
Mac addressing
layer 1 of OSI layer is
Physical layer
voltage levels, physical data rate and maximum transmission distance are some properties of system that can be found in
Physical layer ( layer 1)
Cable is an example of
Physical layer
what a protocol
Certain way that computers communicate with each other
TCP/IP is
an acronym used for the set of network protocols
Name OSI layer from order sent
- Application layer
- Presentation layer
- Session layer
- Transport Layer
- Network Layer
- Data-link layer
- Physical layer
Session layer does what ?
establishes, manages and terminates sessions between two hosts
Application layer does what ?
establishes the availability of intended communication partner , synchronizes and establishes agreements on procedures for error recovery
Presentation layer does what ?
ensures that information sent at the application layer of one system is readable by application layer on another.
why is OSI used
How computer networking protocol work with each other
