8188768
Description
Mind Map by Josh Watkins, updated more than 1 year ago
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Created by Josh Watkins
almost 8 years ago
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The Internet Mind Map
- Modems
- Computer use digital signal but many
connect to the internet via a phone
line
- A phone line uses analogue
singal
- A phone line uses analogue
singal
- A modem converts a digital signal
to an analogue signal
- This is done so it can be
sent along a phone line
- It then converts the analogue
signal back to digital when it
arrives at it's destination node
- This is done so it can be
sent along a phone line
- Computer use digital signal but many
connect to the internet via a phone
line
- Bandwidth and
Broadband
- Bandwidth is the capacity of a network
in terms of how quick it transmits data
- As more users send data, the
bandwidth is shared causing
slower speeds for each user in
transmission
- As more users send data, the
bandwidth is shared causing
slower speeds for each user in
transmission
- Broadband is the name given to
network data transfer mediums
- Many frequencies can
be transmitted at the
same time along a
broadband
- This means that it can carry
more data at one time and
therefor has a faster
bandwidth
- This means that it can carry
more data at one time and
therefor has a faster
bandwidth
- Many frequencies can
be transmitted at the
same time along a
broadband
- Bandwidth is the capacity of a network
in terms of how quick it transmits data
- ADSL and
Cable
- ADSL is where
spare capacity
on POTS* is
used
- POTS - Plain Old Telephone
Service
- It has a greater bandwidth for
downloading than it does for
uploading
- POTS - Plain Old Telephone
Service
- Cable
- this is where dedicated
fiber-optic cables are used to
transfer data
- this is where dedicated
fiber-optic cables are used to
transfer data
- ADSL is where
spare capacity
on POTS* is
used
- Routers
- A router routes the correct
data to the correct network
- This connects networks
- This connects networks
- They tell data packets where to
head to get to their destination
- A router routes the correct
data to the correct network
- IP Adressing
- Every node has an IP Address
- This allows data to be sent and received
at the right node on the internet
- Without them, computers wouldn't know
where the data needs to be sent to
- Without them, computers wouldn't know
where the data needs to be sent to
- This allows data to be sent and received
at the right node on the internet
- Every node has an IP Address
- DNS
Servers
- Domain Name
System
- Changes domain names
to IP Adresses
- When you type a domain name
into your browser, the DNS looks
up the address to find its IP
Address
- Your computer then uses the IP
Address to connect to the website
- Your computer then uses the IP
Address to connect to the website
- Domain Name
System
- By Josh Watkins
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