Topic 2 The Internet Flashcards
Advantages of E-commerce to Customers (4)
Available 24/7
Greater choice
No need to travel
Price comparison
Disadvantages of E-commerce to Customers (5)
Hidden costs of postage What you see is not always what you get Customers concerns about security Unknown seller Lack of social interaction
Advantages of Ecommerce to Business
4
Smaller premises so cheaper rates
Wider customer base
Target sales - alter your prices compared with rivals
more efficient customer targeting
Disadvantages of E-commerce to Business (3)
Trained staff needed
Cost of maintaining a company website
Delivery vans pollution
What is FTP?
File Transfer Protocol
A protocol used for sending large files between computers and over the internet
Advantage: Unlimited number of files and unlimited file size
What would a business require to become an E-commerce based Shop? (6)
Internet Service Provider (ISP) - provides connection to the internet
Electronic Stock database
Customer database
Methods of secure payment
Ability to maintain a company website - Gives a competitive edge
Employ/train staff to use the system - Unemployment, New jobs, Working hours
Advantages of Distributed Processing (4)
Reduces costs because an expensive powerful computer (supercomputer) is not needed
Can pass work to a computer anywhere in the world using the Internet
Improved performance as each computer can work on part of the data
Can improve performance by adding more computers
Disadvantages of Distributed Processing (2)
Issues with the security of data spread out on so many different computers
Issues with communication breakdowns
Describe the WHO Popular Power Project
Helped scientists to model how the influenza virus responds to different vaccines in the hope of developing a new stronger vaccine
Seti@home
The purpose is to search for intelligent life outside the Earth and to do this a radio telescope is used. In order to search for the narrow-bandwidth signals lots of computing power is needed
Dialup Hardware
Method of connecting to the internet using a Telephone line connected to a modem and a PC.
+Cheaper because you pay only when using it
-Slower connection speeds
Broadband
A fast connection to the internet which does not use a modem.
+Fast connection to the internet allows to play games
+ Makes video conferencing possible
-Expensive because you pay a monthly subscription
- Might not be available
How to access online information
Uniform Resource Locator (URL)
Surf the internet by following hyperlinks
Use a search engine which searches for keywords
Web crawler
A program that automatically browses all web pages in a systematic manner to provide up to date data about web pages in order to produce an index which can be used by a search engine to enable fast searches
Boolean search
Combining keywords with operator words:
AND - I want only the documents that contain both words.
OR - I want documents that contain either word. I don’t care which word
NOT - I don’t want this in my results
