12360287
Description
Mind Map by Jamal Mahmood, updated more than 1 year ago
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Created by Jamal Mahmood
almost 7 years ago
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MTA
- Local Area Network
- Components needed:
- Network Adapters, Central connecting
devices, some type of medium to connect
it all together - it can be wired or wireless.
- Network Adapters, Central connecting
devices, some type of medium to connect
it all together - it can be wired or wireless.
- Reasons of why LANs are needed.
- Sharing: Networks
permit the sharing of
files, databases and
media
- Communication: Networks are
critical for email, instant
messaging, faxing capabilities.
- Organisation: Networks centralise data and make it more
accessible, which increases the efficiency and speed with
which this information can be accessed.
- Money: A network should ultimately save a
company by aiding in the budgeting process or
increasing productivity.
- Security is not a reason of
necessity as there are numerous
steps to be taken to secure an
network.
- Sharing: Networks
permit the sharing of
files, databases and
media
- Components needed:
- Central Connecting Devices
- Hub: The most basic central
connecting device. It receives data
from one workstation then will
broadcast that data to all the
workstations that are connected to
it. The intended recipient keeps the
data, and the rest of the host will
discard the it.
- Router: A networking device that forwards data packets along
networks. It is at least connected two networks, LANs or WANs,
and its ISP's network. Located at gateways, where two or more
networks can connect.
- ISP: Internet Service
Provider: An
organisation that
provides access to the
internet.
- ISP: Internet Service
Provider: An
organisation that
provides access to the
internet.
- Switch: More advanced version of a Hub, receives data
and broadcasts the data to the intended recipient
directly only. This provides a much better security as
only the intended recipient may be affected.
- Hub: The most basic central
connecting device. It receives data
from one workstation then will
broadcast that data to all the
workstations that are connected to
it. The intended recipient keeps the
data, and the rest of the host will
discard the it.
- Network Adapter: Also known as a network
interface card (NIC), this is a device that enable
you to send and receive data to and from your
computer. An adapter can be connected by cable
(Cable) or air (Wireless)
- Also have a software component known as a driver,
which defines how the card will interact the
operating system; it usually includes a properties
page that can be accessed in the operating system.
- Most common network
port is the RJ45 port.
- This type of cable is
known as twisted pair, it
is molded so it can only
connect one way to the
RJ45 Port.
- This type of cable is
known as twisted pair, it
is molded so it can only
connect one way to the
RJ45 Port.
- When checking the
properties, if there is a
green light means the
card is connected at 1
Gbps ( gigabits per
second)
- Full Duplex:
Means that
the network
card can
send data
and receive
data
simultaneously.
- Full Duplex:
Can
transceive
(transmit and
receive) twice
as much
information
per second as
a half duplex
connection.
- Full Duplex:
Can
transceive
(transmit and
receive) twice
as much
information
per second as
a half duplex
connection.
- Half Duplex: Means that
the network adapter will
send and receive data but
not at the same time.
- Full Duplex:
Means that
the network
card can
send data
and receive
data
simultaneously.
- Also have a software component known as a driver,
which defines how the card will interact the
operating system; it usually includes a properties
page that can be accessed in the operating system.
- Configuring Internet
Protocol
- IP address is the
cornerstone of
networking because it
defines the computer or
host you are working on
- Every Computer and every other
device will have an IP address: it
allows each computer to send and
receive information back and forth
in an efficient manner
- IP address is split into two portions
- Host portion and network
portions which is the network that
your computer is a member of.
- Subnet Mask: is a group of four numbers
that define what network the computer is
a member of.
- Every Computer and every other
device will have an IP address: it
allows each computer to send and
receive information back and forth
in an efficient manner
- IP address is the
cornerstone of
networking because it
defines the computer or
host you are working on
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