Tuesday, February 16, 2010

IB ITGS QUESTION #2

describe two input devices that would be used in a pilot training computer simulation:
headphones and joysticks are two devices that a pilot training computer simulation used. the joystick would help the pilot direction-wise and headphones help the pilot hear if there are any in-coming airplanes.

Describe advantaged and disadvantages of schools providing their students with USB drives?
An advantage that one would get from this is that if the students printer isnt working, then he/she can at least save it on their usb amd bring it in for school so that they can print from school. A disadvantage may be that students can be very used to the idea and they wouldnt be able to carry the responsibility of finishing their work from home.

Termsssssss 2/16

intranet: it is a private network created using World Wide Web software

middleware: it is a software connecting server to client so that its easier giving information.

e-business: reference to e-commerce of a particular group. company

e-commerce: selling or buying items online

dot-coms: internet based companies

mobile commerce: being able to trade, buy or sell through the cell-phone, smart phones, etc.

Thursday, February 11, 2010

Practice Test ?s

1. define:
a.) Computer Simulation-- are programs based o n models in order to imitate a certain scenario. They can be used in wide spectrum of areas, including business, traffic, training communalistic matters, and the weather.
b.) Bandwidth-- bandwidth refers to the speed and the capability of a connection to transfer a certain amount of data per unit of time. mostly units are classified as kb. it refers to the physical measurements of the band through which connection cables pass.


Tuesday, January 19, 2010

Chap 10 rev. ?s 10n11

10. In what ways can computer security protect the privacy of individuals? in what ways can computer security threaten the privacy of individuals?
Computer security can protect individuals by giving passwords and softwares. Firewalls help protect ones computer security as well as encryptions and audits. However, these may be easily hacked into by genius individuals.

11. What are smart weapons? How do they differ from conventional weapons? what are the advantages and risks of smart weapons?
Smart weapons are missiles that use computerized guidance systems to locate their targets. These weapons can be extremely accurate in pinpointing enemy targets under most circumstances. However, they reduce the amount of time people have to make life-death decisions. As decision-making time goes down, chance of making errors go up.

Monday, January 18, 2010

page 379 ?s 7and 8.

7. What are the two inherent characteristics of computers that make security so difficult?
Two inherent characteristics of computers that make security so difficult are:
- a computer does exactly what its programmed to do, including reveal sensitive information. Any system that can be programmed can be reprogrammed by anyone with sufficient knowledge.
- Any computer can do only what it is programmed to do. "[I]t cannot protect itself from either malfunctions or deliberate attacks unless such events have been specifically anticipated, thought through, and countered with appropriate programming".
8. Describe several different computer security techniques and explain the purpose of each.
Several different security techniques:
-passwords: if choosen carefully, passwords restrict ones access to computer systems and information.
-firewalls: keep internal networks secure while enabling communication with the rest of the internet.

Wednesday, January 13, 2010

chapter 10 review ?s pg. 379 #2, 4

2. Why is it hard to estimate the extent of computer crime?
It is hard to estimate the extent of computer crime because many computer crimes go, The ones that are detected are often unreported because businesses fear that they can lose more from negative publicity than from the actual crimes.

4. What is the most common computer crime? Who commits it? What is being done to stop it?
The most common computer crime is theft. The ones who usually commit it are ones who have greed, financial worries, or even personal problems. Its also to have revenge on a boss, or just for a prank or they can be a spy. The people are clerks, cashiers, programmers computer operators, and/or managers.

Monday, January 4, 2010

?s for after movie.

1. Name 3 networking sites. How do they allow users to participate?
- Twitter: they allow users to write something, and then send to everyone they knoe and those people then send it to the people they know, etc.
-youtube: people can post themselves asking a politican a question, or even share their opinions.
-blogger. People can blog what their opinions are, whats going on on their mind, etc.

2. Explain the impact of these networking sites in three different areas.
=-Education: Everyone, when coming to research, have to use the internet and type up their work.
-Business: In order for businesses to be found and successfyl, they have to have a facebook, twitter, etc. so that poeple can see them.
-Entertainment:one may easily find entertainment from youtube, facebook, etc. instead of going off far.

3. Consider the advantages and disadvantages of networking as pertaining to 3 social/ethical issues.
Advantages:
Equality of Access
Authenticity
control
Disadvantages:
lack of Privacy & Anonymity
lack of Security
lack of Integrity.