Introduction Computer Networking
TERMINOLOGIES
NETWORK DIAGRAMS
Basic layout/map of a computer networks
NETWORK TYPES
Computer types are base in shape and size.
○ WAN ○ LAN ○ MAN ○ PAN
FIBER OPTIC CABLE
One of the latest innovation in network cabling.
SWITCHES & HUB
The central device within a computer network that transmit data
ROUTER
Connects Modem to other device to allow communication from devices to the Internet.
MODEM
Enable connection/communication with the internet.
TOPOLOGIES
refers the infrastructure of computer networks.
FIREWALL
Network software that keeps destructive forces and intruders from a computer network.
COMPUTER NETWORKS
Computer network connects two or more autonomous computers.
The computers can be geographically located anywhere.
Computer Network enable computer to communicate and transfer data and files from one computer to
another.
Computer networks can also create a group of computer networks.
It uses a device called network switch / hub to connect all the computer station from one another to
establish a group of network.
THE NETWORK DIAGRAM
TYPES OF COMPUTER NETWORK
○ Local Area Network (LAN)
○ Wide Area Network (WAN)
○ Metropolitan Area Network (MAN)
○ Personal Area Network (PAN)
○ Peer-to-peer
(1) Local Area Network (LAN)
(2) Wide Area Network (WAN)
is a communications network that spans a large geographic area such as across cities, states, or
countries. They can be private to connect parts of a business or they can be more public to connect
smaller networks together.
(3) Metropolitan Area Network (MAN)
is a series of LANs (Local Area Networks) that are interconnected in a Metropolitan area such as a city,
region or country.
(4) Personal Area Network (PAN)
interconnection of information technology devices or gadgets within the environment of an individual
user.
(5) Peer-to-Peer Network Commonly known as P2P network.
is created when two or more PCs are connected and share resources without going through a separate
server computer. Each workstations has equivalent capabilities and responsibilities. Does not require
switch or hub.
TECHONOLOGIES IN NETWORKING
NETWORK SWITCH / HUB
Used to connects various of network devices and computer to perform computer networking.
A network device that channels incoming data from any of multiple input ports to the specific output
port that will take it toward its intended destination.
MODEM
A modem connects the source of your Internet from your ISP and your home network, whether you
use a cable provider, like Comcast, fiber optics, like FIOS, satellite, such as Direct TV, or a DSL or dial-up
phone connection. The modem connects to your router–or directly to your computer–using an
Ethernet cable.
Modems are different for each type of service; they are not interchangeable.
ROUTER
Network device that join multiple computer networks together via either wired or wireless
connections.
It also connects two or more networks and that the router operates at the network layer of the OSI
model.
ETHERNET CABLE
A cable use to connect your computer and network devices.
Ethernet cables resembles a phone cable but are larger and feature more wires.
Both cables share a similar shape and plug but an Ethernet cable has eight wires and a larger plug than
the four wires found in phone cables.
REPEATER
Network device used to regenerate or replicate a signal.
It extend the coverage area of your WiFi network. It works by receiving your existing WiFi connection,
amplifying it and then transmitting the boosted signal. With this network device you can boost the
signal and effectively double the coverage area of your WiFi network.
