The Internet Flashcards
Advantage of broadband?
- Fast downloads - ideal for large music/media files
- Can use telephone while surfing
- Play games online in real-time due to the speed of data transferred
- Continual connection - no time wasted to connect or dial
- Can use webcams for video conferencing due to real- time connection
- Can make cheap phone calls using broadband connection
Disadvantages of broadband?
- Expensive money subscriptions for service
- Possible to reach customers around the world (global market)
- Varies from one part of the country to the other - some areas faster than others
Define the Internet
- the Internet is a network of networks, millions of computer systems connected together
Advantages of mobile access?
- Access emails and the Internet from anywhere
- Can do more work - more productive
- Work from anywhere - office, home, on the move
- Can make changes to plans on the go - meeting times / appointments
Disadvantages of mobile access
- Security problems - data transferred over Internet
- Theft - more of a target for mugging
- Very expensive - purchase + contracts
- Some black spots - no access to internet
Requirements of e commerce?
- Website - display products, be easily navigated with good search facilities
- Electronic catalogue or database - stock
- Specialist staff - trained to maintain website, update prices and stock
- Database of customer orders - keep details of history - help with marketing + targeting customers
- Shopping trolley + methods of secure payment - customers concerned with card fraud - PayPal
Ways to search the Internet?
- Typing in the URL (uniform resource locator)
- Following hyperlinks - hotspots
- Use search engines - Boolean searches - ‘AND’ ‘OR’ ‘NOT’
- Web crawler (web browser)
Explain FTP?
- transfer any type of data e.g computer programmes, graphic files, music or media files,text files
- data to be sent is arranged in a package
- when received automatically scanned to ensure no errors have been created during transmission
- if it’s been received correctly message sent to sender
- used by large businesses to transfer large amounts of data with each other + their customers
- no limit to file size
Advantages of e commerce to customer?
- Can order goods 24/7
- Disabled can do their own shopping without leaving the house
- Cheaper goods - savings made by companies are passed on to customers
- Good for environment - no need to travel to pick up goods
- Many products have independent reviews to help customer make decisions about buying
- Can compare prices from other retailers much easier
Disadvantages of e commerce to the customer
- Can’t try out the products - clothes for fitting
- People are worried about fraudulent sites
- Can’t pick or hold items, fresh food or clothes
- Customers worried about card security on line
- Hidden costs of postage
- Less social enjoyment of shopping
- Trouble in returning goods
- Can’t pay with cash or cheque you must have a credit / debit card
Disadvantages of e commerce to business?
- Delivery can make products more expensive
- Expensive to set up initially
- Rely on other companies for delivery, customers can blame company for an issue that Is not there fault
- Only access customers who have Internet connection
- More competition from abroad for cheaper products
Advantages of e commerce to business
- Electronic catalogues can be updated much quicker - no need to print new versions
- Fewer staff needed to run business
- Open for business 24/7
- Easy to change price daily
- Possible to reach customers around the world (global market)
- Cheaper no need to pay higher rates *
- Wider customer base *
- Takes pressure off staff *
- Offer wider choice due to just in time *
Advantages of distributed computing?
- Reduces cost because an expensive powerful computer such as a supercomputer is not needed
- Can pass work to computers anywhere in the world using the Internet
- Improved performance as each computer can work on part of the data
Disadvantages of distributed computing?
- Issues with the security of data spread out on so many different computers
- Heavy reliance on networks and communications which may not always be reliable
- Increased costs owing to the use of expensive communication lines
Examples of using distributed computing?
SETI- search for extraterrestrial intelligence
Project used to search for intelligent alien life forms in outer space.
Radio telescopes used to collect data, data shared around hundreds of thousands of home computers on the Internet processing the data.
Popular power project - research in developing a vaccine for the influenza virus (flu)
Thousands home users part of project, completing tasks and logging data on symptoms and issues concerned with the virus. - doctors and scientists can analyse information