18706976
Description
Mind Map by Dilwar Ahmed, updated more than 1 year ago
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Created by Dilwar Ahmed
almost 5 years ago
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THE OPERATING SYSTEM
- TCP/IP Layers
- Application
- Group of applications requiring
network communications
- Group of applications requiring
network communications
- Transport
- Establishes the connection between
applications on differnt hosts
- Establishes the connection between
applications on differnt hosts
- Network
- Responsible for creating packets
that move across a network
- Responsible for creating packets
that move across a network
- Data link
- Responsible for creating frames that move across
a network
- Responsible for creating frames that move across
a network
- Physical
- The transceiver that drives
the signals on the network
- The transceiver that drives
the signals on the network
- Application
- Types of Topology
- Bus
- Cost effective, easy to add more
computers, quick set up
- Data collisions are more liekly
- Cost effective, easy to add more
computers, quick set up
- Ring
- Data is quickly
transferred, prevents
network collisions
- If there is a problem with the main cable
the network will shut down
- Data is quickly
transferred, prevents
network collisions
- Star
- Good performance,
better security
- Expensive, extra hardware neede like
a hub or switch
- Good performance,
better security
- Mesh
- Manages high amount of traffic, a failure of
one device does not cause break in
network
- Expensive, bulk wiring,
building and maintaining is
difficult
- Manages high amount of traffic, a failure of
one device does not cause break in
network
- Bus
- DNS server
- This is when the DNS checks the local cache to see if the IP
address of what a person has typed in matches with anything
inside it. If not then it will go down the hierarchy to each DNS
server to check if there is a match.When it is found it will go
back up the hierarchy and stored in the local cache. After that
the web-page is loaded up
- This is when the DNS checks the local cache to see if the IP
address of what a person has typed in matches with anything
inside it. If not then it will go down the hierarchy to each DNS
server to check if there is a match.When it is found it will go
back up the hierarchy and stored in the local cache. After that
the web-page is loaded up
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