People and Machines: Some students may have physical difficulties that are addressed by their laptops. If they aren't able to use their laptops then it is harder for them to use any IT systems at school.
Globalization: By using their own computers, students have easier access to communication. For example, if a student is working on a project and they need to contact an outside source, it is a lot easier to just their own laptops then for them to have to go and jump through all the hoops that school computers require.
Control: Students have more control over their work when they use their own laptops. If they have to use the school computers then there are always problems with file compatibility and the transferring of information that the student needs. If the students have use of their own laptops, they can rely on their technology more.
Wednesday, March 30, 2011
Pg. 355-268 RQ
1. Active Badge - A microprocessor-controlled ID badge that broadcasts infrared identification codes to a network receiver that updates a badge-location database.
Antivirus - A program designed to search for virus, alert the users, and destroy the virus
Backup - The process of saving data- especially for data recovery
Biometrics - Measurements of individual body characteristics
Encryption - A secret numerical code that can be used to scramble network transmission
Firewall - A tool used to keep internal networks secure while enabling communication with the rest of the Internet
Hacking - Electronic trespassing and vandalism
Mal-ware - Malicious software, especially destructive programs such as the viruses, worms, and Trojan horses devised and spread by computer saboteurs.
Spyware - Technology that collects information from computer users without their knowledge or consent.
Virus - Software that spreads from program to program, or from disk to disk, and uses each infected program or disk to make copies of itself.
7. - Computers do exactly what they are programmed to do, and if some one knows how to bypass the protections made by these programs than there is no security in a computer.
- Computers can't decide who to give access to and who not to give access if two people have a password.
9. Because a tape cannot be hacked through a network. This way if their system failed they would have a back-up that would definitely work.
10. Smart weapons are missiles that use computerized guidance systems to locate their targets. They are different from conventional weapons because they do not require direct input from humans to be launched.
Advantage - Can be used to exactly pinpoint enemy locations so that there wouldn't be any missing.
Risk - There is a smaller amount of decision time which increases errors.
Antivirus - A program designed to search for virus, alert the users, and destroy the virus
Backup - The process of saving data- especially for data recovery
Biometrics - Measurements of individual body characteristics
Encryption - A secret numerical code that can be used to scramble network transmission
Firewall - A tool used to keep internal networks secure while enabling communication with the rest of the Internet
Hacking - Electronic trespassing and vandalism
Mal-ware - Malicious software, especially destructive programs such as the viruses, worms, and Trojan horses devised and spread by computer saboteurs.
Spyware - Technology that collects information from computer users without their knowledge or consent.
Virus - Software that spreads from program to program, or from disk to disk, and uses each infected program or disk to make copies of itself.
7. - Computers do exactly what they are programmed to do, and if some one knows how to bypass the protections made by these programs than there is no security in a computer.
- Computers can't decide who to give access to and who not to give access if two people have a password.
9. Because a tape cannot be hacked through a network. This way if their system failed they would have a back-up that would definitely work.
10. Smart weapons are missiles that use computerized guidance systems to locate their targets. They are different from conventional weapons because they do not require direct input from humans to be launched.
Advantage - Can be used to exactly pinpoint enemy locations so that there wouldn't be any missing.
Risk - There is a smaller amount of decision time which increases errors.
Monday, March 28, 2011
Pg. 345-350 RQ
2. It is hard to estimate the extent of computer crime because a lot of it goes undetected. And often times, what is found, is often unreported because businesses and other companies fear that they will lose their reputations.
3. The typical computer criminal is often times a trusted employee with no criminal record who is tempted by an opportunity, or a normal someone who happened to run across a loop hole or the such. The media stereotype is different as it portrays computer criminals as young, bright, technologically smart, white, middle-class, and male.
4. The most common type of computer crime is theft. It is committed by many people, and often times, those who are also thieves of tangible things. In order to stop this crime, many agencies such as the FBI are beginning to come down hard on these thieves.
6. There are four general types of programs that can be used for software damage, which are viruses, worms, trojan horses and spyware
3. The typical computer criminal is often times a trusted employee with no criminal record who is tempted by an opportunity, or a normal someone who happened to run across a loop hole or the such. The media stereotype is different as it portrays computer criminals as young, bright, technologically smart, white, middle-class, and male.
4. The most common type of computer crime is theft. It is committed by many people, and often times, those who are also thieves of tangible things. In order to stop this crime, many agencies such as the FBI are beginning to come down hard on these thieves.
6. There are four general types of programs that can be used for software damage, which are viruses, worms, trojan horses and spyware
Wednesday, March 23, 2011
Pg. 314-330 RQ
1. Cyberspace - A term used to describe the internet and other online networks
Cookie - Small files deposited on a user's hard disk by websites, enabling sites to remmber what they know about their visitors between sessions.
Cable Modem - A type of broadband Internet connection that uses the same network of coaxial cables that delivers TV signals.
Packet-switching - The standard technique used to send information over the internet
Plug-in - A software extension that adds new features
IP address - A string of 4 numbers separated by periods or dots that serves as an address for computers on the internet.
Static IP address - An IP address that is permanent
Dynamic IP address - An IP address used for computers that are temporarily connected to the net, such as with dial up connection.
Domains - A class of internet addresses indicated by suffixes such as .com, .net, .gov, .co, .edu, etc.
DNS - Domain name system: A system that translates a computers numerical address into an easier to remember string of names separated by dots
Cookie - Small files deposited on a user's hard disk by websites, enabling sites to remmber what they know about their visitors between sessions.
Cable Modem - A type of broadband Internet connection that uses the same network of coaxial cables that delivers TV signals.
Packet-switching - The standard technique used to send information over the internet
Plug-in - A software extension that adds new features
IP address - A string of 4 numbers separated by periods or dots that serves as an address for computers on the internet.
Static IP address - An IP address that is permanent
Dynamic IP address - An IP address used for computers that are temporarily connected to the net, such as with dial up connection.
Domains - A class of internet addresses indicated by suffixes such as .com, .net, .gov, .co, .edu, etc.
DNS - Domain name system: A system that translates a computers numerical address into an easier to remember string of names separated by dots
3. TCP/IP Protocols are important because it is a programming language that allow many different types of computers to have network communication.
11. Push technology is different delivers specifically to the needs of the client.
12. New Services
- Online buying and selling websites.
- Video-Sharing
- Instant Messaging
- Video conference
- Shipment tracking
New Problems
- Spam
- Scams
- Identity Theft
- Money thefts
Top-Level Domains
1. .org (Organization)
2. .com (Commercial)
3. .edu (Education)
4. .gov (Government)
5. .info (Information)
6. .mobi (Mobile Device)
7. .biz (Business)
8. .asia (Asia-Pacific Region)
9. .mil (United States Military)
10. .net (Network)
2. .com (Commercial)
3. .edu (Education)
4. .gov (Government)
5. .info (Information)
6. .mobi (Mobile Device)
7. .biz (Business)
8. .asia (Asia-Pacific Region)
9. .mil (United States Military)
10. .net (Network)
Monday, March 21, 2011
4RQ 302-306
2. - The internet is growing to fast to track
- There is no internet central which keeps track of activity
- There are no hard boundaries on the internet. One can connect to the internet in multiple methods
6. Email addresses and URLs both use the domain naming system
9. File compression is important on the internet so as to make file transfers faster and more efficient. Also, for those with a limited bandwidth, it is a way to get more with less.
4. Internet connections influence whether or not you have to dial in, how fast your data transfer is, and what files you can transfer.
- There is no internet central which keeps track of activity
- There are no hard boundaries on the internet. One can connect to the internet in multiple methods
6. Email addresses and URLs both use the domain naming system
9. File compression is important on the internet so as to make file transfers faster and more efficient. Also, for those with a limited bandwidth, it is a way to get more with less.
4. Internet connections influence whether or not you have to dial in, how fast your data transfer is, and what files you can transfer.
Thursday, March 17, 2011
Pg. 280-287 RQ
9. What can you do with email that you can't do with mail.
With email you can send things instantaneously. Also, you can send however many pictures, music files, and even movies, that you want, free of charge
13. Netiquette
Netiquette is important because it is the new way to communicate. Every one uses it. Speaking on the internet today is like speaking face to face today. What you say online affects people's view of you. Also, through the last couple years, many people have been fired from their workplaces because of their lack of netiquette on the web.
5. Modems
A modem is necessary when connecting computers to networks through telephone lines. Modems convert digital signals into analog signals, and analog signals into digital signals.
11. Money is just another form of information
Money is just like any other piece of information. It is just bits on server. People exchange this information for other bits like music, or something real like a book. Because it is a piece of information, it can be transfered from many devices using communication technology such as Internet, or the telephone.
With email you can send things instantaneously. Also, you can send however many pictures, music files, and even movies, that you want, free of charge
13. Netiquette
Netiquette is important because it is the new way to communicate. Every one uses it. Speaking on the internet today is like speaking face to face today. What you say online affects people's view of you. Also, through the last couple years, many people have been fired from their workplaces because of their lack of netiquette on the web.
5. Modems
A modem is necessary when connecting computers to networks through telephone lines. Modems convert digital signals into analog signals, and analog signals into digital signals.
11. Money is just another form of information
Money is just like any other piece of information. It is just bits on server. People exchange this information for other bits like music, or something real like a book. Because it is a piece of information, it can be transfered from many devices using communication technology such as Internet, or the telephone.
Wednesday, March 16, 2011
DQ 2
the telephone, email, real-time teleconference, fax, or overnight mail service.
Each of these methods had an important role in communication today. People generally use the telephone as main means of communication today. It has the advantage of a person being able to heard another person instantly. But it also has the disadvantage of the users not being able to see each other.
And this is where real-time teleconference comes into play. This allows you to be able to see the other person. A disadvantage of this is that people such as sex offenders can abuse.
Fax and email are similar means of communication. They both allow typed messages to be sent. An advantage of fax, is that it allows a person to scan anything and send it. This is also true for email. A disadvantage is that fax requires a phone line. Email can be access from anything that can access internet.
Overnight Mail Service is an extremely useful service meant mainly for getting items from point A to point B as soon as possible. This advantage is slightly marred by the fact that this service is fairly expensive. Minimum prices are approximately thirty dollars.
Each of these methods had an important role in communication today. People generally use the telephone as main means of communication today. It has the advantage of a person being able to heard another person instantly. But it also has the disadvantage of the users not being able to see each other.
And this is where real-time teleconference comes into play. This allows you to be able to see the other person. A disadvantage of this is that people such as sex offenders can abuse.
Fax and email are similar means of communication. They both allow typed messages to be sent. An advantage of fax, is that it allows a person to scan anything and send it. This is also true for email. A disadvantage is that fax requires a phone line. Email can be access from anything that can access internet.
Overnight Mail Service is an extremely useful service meant mainly for getting items from point A to point B as soon as possible. This advantage is slightly marred by the fact that this service is fairly expensive. Minimum prices are approximately thirty dollars.
Monday, March 14, 2011
Pg. 262-272 RQ
6. Communication Softwares
TCP/IP- A protocol that controls information exchange for computers on the internet
2. Give three general reasons for the importance of computer networking
a. Hardware- People are able to share resourses for hardware which allows more efficiency in both performance and cost.
b. People- People are able to communicate with each over large distances, which saves a lot of time. It allows people to do things everyday, such as an online business meeting, which would otherwise be impossible.
c. Software- The Internet allows the sharing of software. In this way, people can sell their softwares online. This allows for a larger range of consumers for a business.
9. What are the differences between email and instant messaging systems?
An email is more of a 'letter'. One sends it, placing in it what they want, like a picture. The receiver then gets the letter the next time he/she checks their email/mail. An instant messenger is like talking to a person face to face. The other person has to be there (or online) and it is harder to transfer files, or show the person picture.
10. Potential problems with email and teleconferencing.
Viruses can be sent through email, which could cause a system failure.
Teleconferencing doesn't allow for the users to revise what they are going to share before they do so.
TCP/IP- A protocol that controls information exchange for computers on the internet
2. Give three general reasons for the importance of computer networking
a. Hardware- People are able to share resourses for hardware which allows more efficiency in both performance and cost.
b. People- People are able to communicate with each over large distances, which saves a lot of time. It allows people to do things everyday, such as an online business meeting, which would otherwise be impossible.
c. Software- The Internet allows the sharing of software. In this way, people can sell their softwares online. This allows for a larger range of consumers for a business.
9. What are the differences between email and instant messaging systems?
An email is more of a 'letter'. One sends it, placing in it what they want, like a picture. The receiver then gets the letter the next time he/she checks their email/mail. An instant messenger is like talking to a person face to face. The other person has to be there (or online) and it is harder to transfer files, or show the person picture.
10. Potential problems with email and teleconferencing.
Viruses can be sent through email, which could cause a system failure.
Teleconferencing doesn't allow for the users to revise what they are going to share before they do so.
Friday, March 11, 2011
Chapter 7 Beyond the Basics
Batch Processing: Users accumulate transactions and input them into the computer in large batches
Real-time Computing: Allows instant access to information
Data Mining: The discovery and extraction of hidden predictive information from large databases
Uses statistical methods and artificial intelligence technology.
HTML: The language used to construct most web page
XML: A newer, more powerful data description language. Its designed with industrial-strength database access in mind.
-Web database strategies revolve around directories.
-Directories are at the heart of many customer relationship management (CRM) systems—software systems for organizing and tracking information on customers.
Object Oriented Database
-Make database construction and usage more flexible
-Store software objects that contain procedures (or instructions) along with data
-Are often used in conjunction with object-oriented programming languages
-A database of images, containing a class for photos
-One instance of this class – one object for every photograph in the database
-Data associated with this object: photographer’s name, description of photo, copyright status, and the image itself
-One operation for the class – producing a thumbnail
This type of data base allows
-Easy manipulation of various types of data
-Saves time by reusing objects
-Associates actions with the data
Relational Databases
-Not good with unstructured data (audio, video clips)
-Will still be used in combination with object oriented databases – as hybrids
Multimedia Databases
-Serve as indexes for art, photographs, maps, video clips, and other media files
Natural Language Databases
-Allow users to ask for data using the same language used to address humans (natural language queries)
-Future databases will undoubtedly incorporate more artificial intelligence technology
-Database programs enable users to quickly and efficiently store, organize, retrieve, communicate, and manage large amounts of information.
-Database programs enable users to view data in a variety of ways, sort records in any order, and print reports, mailing labels, and other custom printouts.
-Database management systems (DBMSs) can work with several data sources at once, cross-referencing information among files when appropriate.
Real-time Computing: Allows instant access to information
Data Mining: The discovery and extraction of hidden predictive information from large databases
Uses statistical methods and artificial intelligence technology.
HTML: The language used to construct most web page
XML: A newer, more powerful data description language. Its designed with industrial-strength database access in mind.
-Web database strategies revolve around directories.
-Directories are at the heart of many customer relationship management (CRM) systems—software systems for organizing and tracking information on customers.
Object Oriented Database
-Make database construction and usage more flexible
-Store software objects that contain procedures (or instructions) along with data
-Are often used in conjunction with object-oriented programming languages
-A database of images, containing a class for photos
-One instance of this class – one object for every photograph in the database
-Data associated with this object: photographer’s name, description of photo, copyright status, and the image itself
-One operation for the class – producing a thumbnail
This type of data base allows
-Easy manipulation of various types of data
-Saves time by reusing objects
-Associates actions with the data
Relational Databases
-Not good with unstructured data (audio, video clips)
-Will still be used in combination with object oriented databases – as hybrids
Multimedia Databases
-Serve as indexes for art, photographs, maps, video clips, and other media files
Natural Language Databases
-Allow users to ask for data using the same language used to address humans (natural language queries)
-Future databases will undoubtedly incorporate more artificial intelligence technology
-Database programs enable users to quickly and efficiently store, organize, retrieve, communicate, and manage large amounts of information.
-Database programs enable users to view data in a variety of ways, sort records in any order, and print reports, mailing labels, and other custom printouts.
-Database management systems (DBMSs) can work with several data sources at once, cross-referencing information among files when appropriate.
Thursday, March 10, 2011
Pg. 237-245 RQ
1. What are the advantages of personal information management software over paper notebook organizers? What are the disadvantages?
Management software allows you to keep your information more organized. Also it takes up a lot less space.
A disadvantage is that a power outage, virus, etc. might cause you to lose your information.
2. Do we have a legal right to privacy? On what grounds?
Technically we do not have a right to privacy for everything we do on the internet. Information cannot be collected for those who are 12 and under. Also privacy of financial, eduction, and health records is a right. However, many other things do not require a company/business to hold back information.
3. Describe how record matching is used to obtain information about you. Give an example.
Record matching is used to obtain information about someone by entering one piece of information about that person, and have the software cross reference all the files they have for that piece of information. Then it pulls up all information that have something to do with it.
For example, someone enters my name, then the computer pulls up all the information that is attributed to the name.
4. What is the difference between a file mangaer and a DBMS?
A DBMS manipulates a large collection of files, often cross-referencing them. A file manager simply works with one file at a time.
4.
Management software allows you to keep your information more organized. Also it takes up a lot less space.
A disadvantage is that a power outage, virus, etc. might cause you to lose your information.
2. Do we have a legal right to privacy? On what grounds?
Technically we do not have a right to privacy for everything we do on the internet. Information cannot be collected for those who are 12 and under. Also privacy of financial, eduction, and health records is a right. However, many other things do not require a company/business to hold back information.
3. Describe how record matching is used to obtain information about you. Give an example.
Record matching is used to obtain information about someone by entering one piece of information about that person, and have the software cross reference all the files they have for that piece of information. Then it pulls up all information that have something to do with it.
For example, someone enters my name, then the computer pulls up all the information that is attributed to the name.
4. What is the difference between a file mangaer and a DBMS?
A DBMS manipulates a large collection of files, often cross-referencing them. A file manager simply works with one file at a time.
4.
Tuesday, March 8, 2011
Page 224-232 Review Questions
1.What does it mean to sort a data file?
To sort a data file means to arrange records in alphabetic or numeric order based on values in one or more fields.
2. What is a query?
A query is an information request. An example of a question that might be answered by a query is, who the author of a book is.
3. Describe the structure of a simple database.
A databases are made up of tables. These tables contain records which are composed up of fields.
4. Why are computers important in discussions of invasion of privacy?
Computers are important in discussions of invasion of privacy because of the information people can obtain from them. In todays world, people can look up personal details of another individual with ease on computer.
To sort a data file means to arrange records in alphabetic or numeric order based on values in one or more fields.
2. What is a query?
A query is an information request. An example of a question that might be answered by a query is, who the author of a book is.
3. Describe the structure of a simple database.
A databases are made up of tables. These tables contain records which are composed up of fields.
4. Why are computers important in discussions of invasion of privacy?
Computers are important in discussions of invasion of privacy because of the information people can obtain from them. In todays world, people can look up personal details of another individual with ease on computer.
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