Describe the network communication

1. Computer
Fund/Prod
Prof. Gamboa

2. Dear Lord, I praise You and I love being in Your presence.
Thank You for the sacrifice you made for me on the cross.
Thank You for helping my heart to rest in Your presence.
In a busy world, it is here that I find truth, grace, and mercy.
My heart is overwhelmingly grateful.
As it overflows with gratitude, may You present opportunities
for me to serve.
I know You love me and work all things together for my good.
I choose to trust You, Lord. Teach me and always guide me,
who always finds the good... and not a complainer.
In Jesus’ Name I pray, Amen

3. Topic
Communication

4. For successful communications, you need the following:
 A sending device that initiates an instruction to transmit data,
instructions, or information.
 A communications device that connects the sending device to a
communications channel.
 A communications channel, or transmission media on which
the data, instructions, or information travel.
 A communications device that connects the communications
channel to a receiving device.
 A receiving device that accepts the transmission of data,
instructions, or information.

5. All types of computers and mobile devices
serve as sending and receiving devices in a
communications system.
This includes mainframe computers, servers,
desktop computers, notebook computers,
Tablet PCs, smart phones, portable media
players, and GPS receivers.
One type of communications device that
connects a communications channel to a
sending or receiving device such as a
computer is a modem.
Two examples of communications channels
are cable television lines and telephone lines.

6. USES OF COMPUTER
COMMUNICATIONS
Computer communications are everywhere.
Many require that users subscribe to an Internet access provider.
With other computer communications, an organization such as a business
or school provides communications services to employees, students, or
customers.

7. Wireless Messaging Services
Users can send and receive wireless messages to
and from smart phones, cell phones, handheld game con- soles, and other
personal mobile devices using three techniques: text messaging, wireless instant
messaging, and picture/video messaging

8. TEXT MESSAGING
A mobile device with text messaging, also called SMS (short message service), capability allows
users to send and receive short text messages on a phone or other mobile device. Text messaging
services typically provide users with several options for sending and receiving messages:
 Mobile to Mobile: send a message from your mobile device to another mobile device
 Mobile to E-Mail: send a message from your mobile device to an e-mail address anywhere in the
world
 Web to Mobile: send a message from a text messaging Web site to a mobile device, or request that
a Web site alert a mobile device with breaking news and other updates, such as sports scores,
stock prices, and weather forecasts
 Mobile to Provider: send a message by entering a four- or five-digit number assigned to a specific content or
wireless service provider, followed by the message, such as a vote for a television program
contestant

9. WIRELESS INSTANT MESSAGING
Wireless instant messaging (IM) is a real-time Internet
communications service that allows wireless mobile devices to
exchange messages with one or more mobile devices or
online users. Some wireless Internet service providers partner
with IM services so that you can use your smart phone or
other mobile device to send and receive wireless instant
messages. With a compatible IM service, users have these IM
options:
 Mobile to Mobile: use a wireless instant messenger
to communicate between two mobile devices
 Mobile to Personal Computer: use a wireless instant
messenger to communicate between a mobile device and a

10. PICTURE/VIDEO MESSAGING With picture
messaging, users can send pictures and sound files, as
well as short text messages, to a phone or other
personal mobile device, or a computer. With video
messaging, users can send short video clips, usually
about 30 seconds in length, in addition to all picture
messaging services. Picture/video messaging service,
also called MMS (multimedia message service), typically
provides users these options for sending and receiving
messages:
 Mobile to Mobile: send the picture/video from your
mobile device to another mobile device
 Mobile to E-Mail: send the picture/video from your

11. Wireless Internet Access Points
• At home, work, school, and in many public locations, people
connect wirelessly to the Internet through a wireless Internet
access point using mobile computers, smart phones, handheld
game consoles, or other devices. Users access wireless
Internet access points with computers or devices that have the
necessary built-in wireless capability or the appropriate wireless
network card, PC Card, ExpressCard module, or USB network
adapter

12. Two types of wireless Internet access points
• hot spots and mobile wireless networks.
A hot spot is a wireless network that provides Internet
connections to mobile computers and other devices.
Through the hot spot, mobile users check e-mail, browse
the Web, and access any service on the Internet.
Three hot spot technologies are Wi-Fi, WiMAX, and
Bluetooth. Wi-Fi hot spots pro- vide wireless network
connections to users in public locations such as airports,
train stations, hotels, convention centers, schools,
campgrounds, shopping malls, bookstores, libraries,
restaurants, and coffee shops.
A mobile wireless network provides users with high-
speed Internet connections, as long as they are in
the network’s range. A mobile wireless network
usually includes most major cities and air- ports.

13.  Internet — Worldwide collection of networks that links millions of businesses,
government agencies, educational institutions, and individuals
 Web — Worldwide collection of electronic documents on the Internet that users access
through a Web browser
 E-Mail — Transmission of messages and files via a computer network
 Instant Messaging — Real-time one-on-one communications service on the Internet
that notifies you when one or more people are online and then allows you to exchange
messages, pictures, files, audio, and video
 Chat Rooms — Real-time typed conversation among two or more people that takes
place on a computer connected to a network that also may allow the exchange of
messages, pictures, files, audio, and video
 Newsgroups — Online areas in which users have written discussions about a particular
subject
Words to Remember

14. Blogs — Time-stamped articles on a network that reflect the author’s interests,
opinions, and personality
Wikis — Collaborative Web sites that allow users to create, add to, modify, or
delete Web site content
RSS — Specification that enables Web content to be distributed to subscribers
VoIP — Conversation that takes place over the Internet using a telephone
connected to a computer or mobile device or telephone adapter
FTP — Internet standard that permits users to upload and download files to and
from FTP servers on the Internet
Web Folders — Location on a Web server (also known as an HTTP server) to
which users publish documents and other files
Video Conferencing — Real-time meeting between two or more geographically
separated people who use a network to transmit audio and video data
Fax Machine or Computer Fax/Modem — Transmits and receives documents
over telephone lines

15. Communication Channels
A pathway over which information can be
Transferred
Information sent over a channel has source
(Often called the transmitter), from which the
Information originates, and destination (often
Called the receiver), to which the information
Is delivered

16. simplex channel - is a channel whose direction
of transmission is unchanging.
half-duplex channel - is a channel in which
the direction may be reversed, but the
transmission does not occur at the same time.
full-duplex channel - is a channel that allows
simultaneous exchange in both directions.
Communication Channels

18. Computer Interconnections
Basic Principles of
Networking
A network, in computing, is a group of two or
more devices or nodes that can communicate.
The devices or nodes in question can be
connected by physical or wireless
connections.
The key is that there are at least two
separate components, and they are
connected.

22. Network Types
Topic

30. Router
A router receives and
sends data on computer
networks. Routers are
sometimes confused
with network hubs,
modems, or network
switches.
However, routers can
combine the functions
of these components,
and connect with these
devices, to improve
Internet access or help
create business
networks.

31. Switch
•A switch is a device in a computer network that
connects other devices together. Multiple data cables
are plugged into a switch to enable communication
between different networked devices.
•Switches manage the flow of data across a network
by transmitting a received network packet only to the
one or more devices for which the packet is intended.

32. RJ 45
•The "RJ" in RJ45 stands for "registered jack," since it is a standardized
networking interface.
•The "45" simply refers to the number of the interface standard. Each RJ45
connector has eight pins, which means an RJ45 cable contains eight
separate wires.

33. Ethernet wire
Ethernet cables are manufactured
in two basic forms:
•Solid Ethernet cables offer slightly
better performance and improved
protection against electrical
interference. They're also
commonly used on business
networks, wiring inside office
walls, or under lab floors to fixed
locations.
•Stranded Ethernet cables are less
prone to physical cracks and
breaks, making them more

34. Modem
A modem is a network device that both
modulates and demodulates analog carrier
signals (called sine waves) for encoding and
decoding digital information for processing.
Modems accomplish both of these tasks
simultaneously and, for this reason, the
term modem is a combination of "modulate"
and "demodulate."

35. Wifi Switch
•Wi-Fi & Wireless A network switch is a small
device that centralizes communications
among several connected devices in one
local area network (LAN).
•Stand-alone Ethernet switch devices were
commonly used on home networks many
years before home broadband routers
became popular.

36. Reporting
Types of Network