Topic 2 The Internet Flashcards Preview

ICT Year 2 > Topic 2 The Internet > Flashcards

Flashcards in Topic 2 The Internet Deck (20):
1

Advantages of E-commerce to Customers (4)

Available 24/7
Greater choice
No need to travel
Price comparison

2

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

3

Advantages of Ecommerce to Business
(4)

Smaller premises so cheaper rates
Wider customer base
Make use of just in time stock control
Can make additional money from advertising

4

Disadvantages of E-commerce to Business (3)

Initial set up costs are expensive
Staff need to be trained to use the system
Requires specialist staff to maintain the system

5

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

6

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

7

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

8

Disadvantages of Distributed Processing (2)

Issues with the security of data spread out on so many different computers
Issues with communication breakdowns

9

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

10

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

11

Dialup Hardware

Method of connecting to the internet using a Telephone line connected to a modem and a PC.

+Cheap initial and maintenance costs
-Slower connection speeds

12

Broadband

A fast connection to the internet which does not use a modem.

+Fast connection to the internet allows to play games
-Expensive initial and maintenance costs
-Quality is determined by the distance to the digital telephone exchange

13

How to access online information

Uniform Resource Locator (URL)
Surf the internet by following hyperlinks
Use a search engine which searches for keywords

14

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

15

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

16

Distributed computing

Where a series of computers are networked together to solve the same problem. Each computer shares processing power, storage and bandwidth in order to solve a given problem.

17

Effect of the internet -Moral (5)

Disinformation
Bullying
Inappropriate websites
Using emails to give bad news
Spreading rumours

18

Effects of the internet -Social (7)

Privacy issues
Gambling addictions
Obesity
Addiction to computer games
Widens the gaps between the haves and don't haves
Organisations moving call centres abroad
Shops might have to close

19

Effects of the internet -Ethical (5)

Plagiarism
Spam
Companies monitor employees
Using wireless network without permission
Using photoshop to alter reality

20

What does SETI stand for?

Search for Extraterrestrial Intelligence