PRE-FINAL.pdf

The Internet
It is a network of networks that
consists of millions of
interconnected devices, that are
linked by a broad array of
electronic, wireless and optical
networking technologies.

Virtual Private Network
A VPN is a private network that is constructed within a public network infrastructure
such as the global Internet. a telecommuter can access the network of the company
headquarters through the Internet by building a secure tunnel between the
telecommuter’s PC and a VPN router in the headquarters. It is a mechanism for
providing secure, reliable transport over Internet. VPNs are frequently used by remote
workers or companies with remote offices to share private data and network
resources.

Server-Based Network
The term Client/server refers to the concept of
sharing the work involved in processing data
between the client computer and the server
computer.
The client/server network is the most efficient way
to provide:
Databases and management of applications
such as Spreadsheets, Accounting,
Communications and Document
management.
Network management.
Centralized file storage

Peer to peer network
There are no dedicated servers or hierarchy
among the computers.
All of the computers are equal and therefore
known as peers.
In peer-to-peer (P2P) networks, each computer
acts as both a server and a client. Examples of P2P
software include Skype and BitTorrent.

Wireless communication
uses radio frequencies (RF)
or infrared (IR) waves to
transmit data between
devices on a LAN. For
wireless LANs, a key
component is the wireless
hub, or access point, used
for signal distribution.
wireless communication

HUBS
Hubs enable computers on a network to communicate. Each
computer plugs into the hub with an Ethernet cable, and
information sent from one computer to another passes
through the hub.
A hub can't identify the source or intended destination of the
information it receives, so it sends the information to all of the
computers connected to it, including the one that sent it. A hub
can send or receive information, but it can't do both at the
same time.
hub
node 1 node 2
node 3 node 4

SWITCH
Switches work the same way as hubs, but they can identify the
intended destination of the information that they receive, so
they send that information to only the computers that are
supposed to receive it. Switches can send and receive
information at the same time, so they can send information
faster than hubs can.
hub
node 1 node 2
node 3 node 4

BRIDGE
A bridge is a computer networking
device that builds the connection with
the other bridge networks which use
the same protocol. It works at the
Data Link layer of the OSI Model and
connects the different networks
together and develops communication
between them. It connects two local-
area networks; two physical LANs into
larger logical LAN or two segments of
the same LAN that use the same
protocol.

REPEATER
A network device used to regenerate or replicate a
signal. Repeaters are used in transmission systems
to regenerate analog or digital signals distorted by
transmission loss. Analog repeaters frequently can
only amplify the signal while digital repeaters can
reconstruct a signal to near its original quality.

ROUTER
Routers enable computers to
communicate and they can pass
information between two networks—
such as between your home network
and the Internet.

usb printer
patch panel (front)
patch panel (back)
client 2 (windows 10)
t568b
t568b
t568b
modular box
(ethernet)
modular box
(ethernet)
router
internet
t568b
Ip address 192.168.0.2
ssid = router_itsmeismael
wireless access point
ip address 192.168.0.1
ssid = wap_itsmeismael
network switch
hostname = ismael_client2
ip address = 192.168.0.10
subnet mask = 255.255.255.0
default gateway = 192.168.0.1
printer name = printserver
Ip address = 192.168.0.11
client 1 (windows 7)
hostname = balana_client1
ip address = 192.168.0.12
subnet mask = 255.255.255.0
server (windows server)
hostname = manic_server
ip address = 192.168.0.13
subnet mask = 255.255.255.0
t568b
t568b

WIRELESS ACCESS POINT (AP OR WAP)
Access points (also called base stations)
provide wireless access to a wired
Ethernet network. An access point
plugs into a hub, switch, or wired
router and sends out wireless signals.
This enables computers and devices to
connect to a wired network wirelessly.

PATCH PANEL
A panel that allows multiple devices to be connected and
managed in a more efficient manner. Computer networks,
sound studios, television stations, and a number of other
systems use patch panels to deal with components of their
electronic systems.

It is a surface mounted box used in a commercial
and industrial building to cleanly attach network
cables. It is commonly used in a structured
network.
MODULAR BOX (NETWORK)

RJ45 Connector (Female)
Housing
110 Block Terminal
Color – coded label for T658A and T568B
Wiring schemes
Keystone wall plate
It is used in a commercial and industry buildings to
cleanly attach network cables to a modular box. It
also called as face plate.
A network keystone module is a network peripheral
for mounting network jack/connector into a
keystone wall plate.
Network keystone module

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