t2.4 [computer component- communication devices]
TRANSCRIPT
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
1/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
A Member Of
COM1012
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
1
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
2/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Learning Outcome
2
Describe the uses of
computercommunications.
Describe commonly used
communications devices,
communication softwareand communication
channel
Describes network
architecture andnetwork topology
Differentiate betweenintranet and extranet
Differentiate betweenintranet and extranet
Describes network,
network advantages anddifferentiate among
types of networks: LANs,MANs, and WANs
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
3/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications Computer communications describes a process in
which two or more computers or devices transfer
data, instructions, and information.
3
Sending device Communicationschannel
Receiving device
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
4/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications
4
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
5/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications Devices A communications device is any type of hardware
capable of transmitting data, instructions, and
information between a sending device and areceiving device.
A dial-up modem converts signals between analog
and digital. A digital modem sends and receives data and
information to and from a digital line.
5
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
6/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications Devices
A wireless modemuses the cell phone network toconnect to the Internet wirelessly from a
notebook computer, a smart phone, or other
mobile device. 6
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
7/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications Devices
A network cardenables a computer or device to access anetwork
Available in a variety of styles
Wireless network cards often have an antenna 7
Network card for desktop, for wired
network communications
ExpressCard module for wireless
network communications
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
8/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications Devices A wireless access point is acentral communicationsdevice that allows computersand devices to transfer data
wirelessly among themselvesor to a wired network
A router connects multiplecomputers or other routerstogether and transmits data
to its correct destination on anetwork
Many are protected by ahardware firewall
8
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
9/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications Software Communications softwareconsists of programs
that:
9
Help users establisha connection to
another computer
or network
Manage thetransmission of
data, instructions,
and information
Provide an
interface for users
to communicate
with one another
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
10/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Communications Channel
The amount of datathat can travel over a
communications
channel sometimes is
called the bandwidth
Transmission mediacarries one or more
signals
Broadband mediatransmit multiple
signals
simultaneously
10
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
11/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Physical Transmission Media
Twisted-pair cable Coaxial cable
Fiber optic cable
11
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
12/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Physical Transmission Media
12
Twisted-pair cable
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
13/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Physical Transmission Media
13
Coaxial cable
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
14/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Physical Transmission Media
14
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
15/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Wireless Transmission Media
15
Infrared Broadcast radio Cellular radio
Microwaves CommunicationsSatellite
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
16/33
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
17/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Uses of Computer Communications
Users can send and receive wireless messages
using wireless messaging services17
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
18/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Uses of Computer Communications
Text messaging
allows users tosend and
receive shorttext messageson a phone orother mobile
device orcomputer
Picturemessaging
allows users tosend pictures
and sound files
Videomessaging
allows users tosend shortvideo clips
Wireless instant
messagingallows wireless
users toexchange real-time messages
with one or
more otherusers
18
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
19/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Uses of Computer Communications
Wireless Internet access points allow people to connect
wirelessly to the Internet from home, work, school, and in
many public locations.
19
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
20/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Uses of Computer Communications
A global positioning system (GPS) is a navigation system
that consists of one or more earth-based receivers that
accept and analyze signals sent by satellites in order to
determine the GPS receivers geographic location
GPS receivers are:
20
Built intomany mobile
devices
Available as ahandheld
device
Available withnew vehicles
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
21/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Uses of Computer Communications
21
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
22/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Networks A network is a collection of computers and
devices connected together via communications
devices and transmission media
Advantages of a network include:
22
Facilitating
communications
Sharing
hardware
Sharing data and
informationSharing software
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
23/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Networks
A local area network(LAN)
is a network that connects
computers and devices in alimited geographical area
A wireless LAN (WLAN) is a
LAN that uses no physical
wires
23
Types of networks
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
24/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Networks
24
A metropolitan area
network (MAN)
connects LANs in ametropolitan area
A wide area network
(WAN) is a network that
covers a large
geographical area
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
25/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Networks
The design of computers, devices, and media on a
network is sometimes called the network architecture
25
Peer-to-peer networkClient/server network
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
26/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Client/Server NetworkWhat is a client/server
network?
One or more
computers act as
server and other
computers, or clients,
access server
26
server
client
client
client
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
27/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Networks
Peer-to-Peer (P2P) describes an Internet network
on which users access each others hard disks and
exchange files directly over the Internet27
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
28/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Networks A network topologyrefers to the layout of the computers
and devices in a communications network
Popular topologies are star, bus and ring.
28
Star network Bus network Ring network
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
29/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Star Network
All devices connect to a central device, called hub
All data transferred from one computer to another
passes through hub
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
30/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Bus Network
All computers and devices connect to a
single central cable, or bus.
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
31/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Ring Network
Cable forms closed ring, or loop, with all
computers and devices arranged along ring Data travels from device to device around entire
ring, in one direction
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
32/33
MO1 MO2
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
COM1012
Networks
An intranet is aninternal networkthat uses Internet
technologies
An extranet
allows customersor suppliers to
access part of its
intranet
32
MO1 MO2
-
7/30/2019 T2.4 [Computer Component- Communication Devices]
33/33
Describe basic computer hardware, software, input,
output, communication and network devices.
To apply the suitable office application to
fulfill given task.
A Member Of
Summary
33
Overview of
communications
terminology andapplications
Describes networks,
types of networks,
network architectureand network topology
Differentiate between
intranet and extranet