Home Communication LANS WANS Internet Innovation Topics Menu Security OUTCOME 2 Topology What is … Welcome to ICT IN Business Welcome to ICT IN Business Outcome 2 Outcome 2 During this outcome you will learn about Electronic Data Communication Systems
Welcome to ICT IN Business Outcome 2. During this outcome you will learn about Electronic Data Communication Systems. By the end of this programme, you should be able to:. By the end of this programme, you should be able to:. Describe different data communications systems - PowerPoint PPT Presentation
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Home
Communication
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OUTCOME 2
Topology
What is …
Welcome to ICT IN Business Welcome to ICT IN Business Outcome 2Outcome 2
During this outcome you will learn about Electronic Data Communication Systems
Home
Communication
LANS
WANS
Internet
Innovation
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Security
OUTCOME 2
Topology
What is …
By the end of this programme, you should be able to:By the end of this programme, you should be able to:
Describe different data communications systems
Evaluate different data communications systems
Identify security threats and procedures
Describe new ICT innovations
Evaluate new ICT innovations
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What is … LANS
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INTERNET
SECURITYINNOVATION
COMMUNICATION
TOPOLOGY
OUTCOME 2OUTCOME 2OUTCOME 3OUTCOME 2
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What is … All organisations need good communication systems if they are to be successful.
THE COMMUNICATION PROCESS
DATA INFORMATION DECISION
IMPLEMENTREVIEWFEEDBACK
COMMUNICATION SYSTEMS
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Improves communication within and between organisations
Reduces costs
Improves quality of information
Improves availability of information
Allows sharing of resources
Allows for flexible working
Promotes collaboration
Contributes to success of business
BENEFITS OF ELECTRONIC COMMUNICATION SYSTEMS
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WHAT IS A NETWORK?
A network is two or more computer systems linked by a communication medium such as cable, telephone line, radio waves, satellite or infra-red light.
A network will provide the following benefits:
Sharing of information
Sharing of resources
Improve efficiency
Allow electronic communication
TYPES OF NETWORK
The main types of network are:
Local Area Network (LAN)
Wide Area Network (WAN)
Metropolitan Area Network (MAN)
Click here to learn more about different types of networks
Email provides a quick and cheap method of communication
World Wide Web provides means of publishing company information globally
File Transfer allows files to be transferred across the internet
Newsgroups are discussion forums that can be used for market research purposes
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SECURITY THREATS
Hackers
FireTheft
Power Surge
Accidental Damage
DisclosureFlood
Power Failure
Data Deletion
Data Modification
Virus
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SECURITY PROCEDURES
Good practice involves:
Development of security policy
Allocation of responsibilities
Security training
Incident reporting
Implementing Security Measures
Reviewing and updating Security Measures
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SECURITY MEASURES
Fireproof cabinets Positioning of computer to minimise unauthorised use Shred confidential printouts Passwords Door Locks Identification System Equipment Log Burglar Alarms Regular Back-ups Install anti-virus software Encryption System Install firewall
Client/Server In a client/server system resources are controlled by a central computer called a file server. Client resources are accessed through the server
OUTCOME 2
OPERATING SYSTEMS
Peer to PeerA peer-to-peer system does not have a dedicated server. Each computer may act as both a client and a server. Users can share folders and peripherals.
OUTCOME 2
FIREWALL
Firewall A firewall is a system designed to prevent unauthorized access to or from a private network. Firewalls can be implemented in both hardware and software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria