Dec
18
TRN asked:
In the past, I’ve plugged in my ipod on the primary computer and another computer in my house. Both had itunes installed. However, whenever I plugged my ipod into the second computer, the files were erased off my ipod. Therefore, I had to plug it into the primary computer to retrieve the files again.
In the past, I’ve plugged in my ipod on the primary computer and another computer in my house. Both had itunes installed. However, whenever I plugged my ipod into the second computer, the files were erased off my ipod. Therefore, I had to plug it into the primary computer to retrieve the files again.
So, how can I save the same files on both computers without running the risk of deleted files?
HARVEY
Dec
17
amanda_tommy asked:
How have computers have changed the ways doctors treat patients?
How have computers have changed the ways doctors treat patients?
I have to write an 8 page report, 2000 - 2500 words, and it’s due this tuesday. Help me!
PETE
Dec
16
M M M M asked:
I have 4 computers at home , all are connected via Wireless lan to a Linksys router .
Is it possible that i can enter to other computer on my home network to repair some configuration , etc… ?
How to do that ?
PETE
I have 4 computers at home , all are connected via Wireless lan to a Linksys router .
Is it possible that i can enter to other computer on my home network to repair some configuration , etc… ?
How to do that ?
PETE
Dec
15
roderick_tale asked:
Is there any specific applications that help protect the environment?
What aspects of computers causes environmental problems?
What do environmentalist think of computers?
RICH
Is there any specific applications that help protect the environment?
What aspects of computers causes environmental problems?
What do environmentalist think of computers?
RICH
Dec
14
Filed Under Hardware | Comments Off
davidtuffel asked:
What is Computer Security?
Computer Security is a branch of technology known as information security as applied to computers. Information security means protecting information and information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. The objective of computer security varies and can include protection of information from theft or corruption, or the preservation of availability, as defined in the security policy.
Technological and managerial procedures applied to computer systems to ensure the availability, integrity and confidentiality of information managed by the computer system
Computer security imposes requirements on computers that are different from most system requirements because they often take the form of constraints on what computers are not supposed to do.
Typical approaches to improving computer security can include the following:
Physically limit access to computers to only those who will not compromise security.
Hardware mechanisms that impose rules on computer programs, thus avoiding depending on computer programs for computer security.
Operating system mechanisms that impose rules on programs to avoid trusting computer programs.
Programming strategies to make computer programs dependable and resist subversion.
Computer Security has three Layers:
o Hacking
o Cracking
o Phreaking
Hacking:
Unauthorized use or attempts to circumvent or bypass the security mechanisms of an information system or network.
Computer hacking always involves some degree of infringement on the privacy of others or damage to computer-based property such as files, web pages or software. The impact of computer hacking varies from simply being simply invasive and annoying to illegal.
Cracking:
The act of breaking into a computer system.
Software Cracking is the modification of software to remove protection methods: copy prevention, trial/demo version, serial number, hardware key, CD check or software annoyances like nag screens and adware.
The most common software ***** is the modification of an application’s binary to cause or prevent a specific key branch in the program’s execution.
Phreaking:
The art and science of cracking the phone network.
Security by design:
The technologies of computer security are based on logic. There is no universal standard notion of what secure behavior is. “Security” is a concept that is unique to each situation. Security is extraneous to the function of a computer application, rather than ancillary to it, thus security necessarily imposes restrictions on the application’s behavior.
There are several approaches to security in computing; sometimes a combination of approaches is valid:
Trust all the software to abide by a security policy but the software is not trustworthy (this is computer insecurity).
Trust all the software to abide by a security policy and the software is validated as trustworthy (by tedious branch and path analysis for example).
Trust no software but enforce a security policy with mechanisms that are not trustworthy (again this is computer insecurity).
Trust no software but enforce a security policy with trustworthy mechanisms.
12 tips for computer security:
Update / patch ALL your software every now and then!
Check / adjust ALL your settings so they are safe, since they ARENT by default!
Use firewall, like ZoneAlarm to control what goes in and out from your computer!
Use good passwords: at least 13marks long, containing both letters and numbers. Remember to change your password every few months atleast and dont ever use the same password in two places!
Get a good antivirus program: NOD32, F-Secure or Norton Antivirus and keep it updated!
Don’t open or execute files that you are not 100% sure are absolutely safe nomatter where or how you get them.
Wipe your historyfiles (like cookies, internet history and temporary files, etc.), logs and personal files, with specific wiping program (like Eraser) instead of just deleting them.
Use encryption to enhance your privacy! Use encrypted email (like Hushmail or Ziplip), www-surfing and encrypt sensitive files on your computer (PGP).
When you are finished using some internet-based service like email, sign out of it rather than just closing your browser! Also, when you leave your computer, make sure that none of such programs or connections are left open that someone could abuse. In WindowsNT/2k/XP, press Windowskey+L to lock the workstation.
Don’t use public computers for anything you need to type in your logins, they usually have Trojan horses that capture your passwords.
Make backups and store them in safe place! Easiest way to do a total-backup is to make an “Image” of your harddrive or partition and store it on safe location, but floppies will usually be just fine for storing documents, etc.
Install and Use a Hardware Firewall
Regards,
Kethy Wright
www.perceptionsystem.com
WESTON
What is Computer Security?
Computer Security is a branch of technology known as information security as applied to computers. Information security means protecting information and information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. The objective of computer security varies and can include protection of information from theft or corruption, or the preservation of availability, as defined in the security policy.
Technological and managerial procedures applied to computer systems to ensure the availability, integrity and confidentiality of information managed by the computer system
Computer security imposes requirements on computers that are different from most system requirements because they often take the form of constraints on what computers are not supposed to do.
Typical approaches to improving computer security can include the following:
Physically limit access to computers to only those who will not compromise security.
Hardware mechanisms that impose rules on computer programs, thus avoiding depending on computer programs for computer security.
Operating system mechanisms that impose rules on programs to avoid trusting computer programs.
Programming strategies to make computer programs dependable and resist subversion.
Computer Security has three Layers:
o Hacking
o Cracking
o Phreaking
Hacking:
Unauthorized use or attempts to circumvent or bypass the security mechanisms of an information system or network.
Computer hacking always involves some degree of infringement on the privacy of others or damage to computer-based property such as files, web pages or software. The impact of computer hacking varies from simply being simply invasive and annoying to illegal.
Cracking:
The act of breaking into a computer system.
Software Cracking is the modification of software to remove protection methods: copy prevention, trial/demo version, serial number, hardware key, CD check or software annoyances like nag screens and adware.
The most common software ***** is the modification of an application’s binary to cause or prevent a specific key branch in the program’s execution.
Phreaking:
The art and science of cracking the phone network.
Security by design:
The technologies of computer security are based on logic. There is no universal standard notion of what secure behavior is. “Security” is a concept that is unique to each situation. Security is extraneous to the function of a computer application, rather than ancillary to it, thus security necessarily imposes restrictions on the application’s behavior.
There are several approaches to security in computing; sometimes a combination of approaches is valid:
Trust all the software to abide by a security policy but the software is not trustworthy (this is computer insecurity).
Trust all the software to abide by a security policy and the software is validated as trustworthy (by tedious branch and path analysis for example).
Trust no software but enforce a security policy with mechanisms that are not trustworthy (again this is computer insecurity).
Trust no software but enforce a security policy with trustworthy mechanisms.
12 tips for computer security:
Update / patch ALL your software every now and then!
Check / adjust ALL your settings so they are safe, since they ARENT by default!
Use firewall, like ZoneAlarm to control what goes in and out from your computer!
Use good passwords: at least 13marks long, containing both letters and numbers. Remember to change your password every few months atleast and dont ever use the same password in two places!
Get a good antivirus program: NOD32, F-Secure or Norton Antivirus and keep it updated!
Don’t open or execute files that you are not 100% sure are absolutely safe nomatter where or how you get them.
Wipe your historyfiles (like cookies, internet history and temporary files, etc.), logs and personal files, with specific wiping program (like Eraser) instead of just deleting them.
Use encryption to enhance your privacy! Use encrypted email (like Hushmail or Ziplip), www-surfing and encrypt sensitive files on your computer (PGP).
When you are finished using some internet-based service like email, sign out of it rather than just closing your browser! Also, when you leave your computer, make sure that none of such programs or connections are left open that someone could abuse. In WindowsNT/2k/XP, press Windowskey+L to lock the workstation.
Don’t use public computers for anything you need to type in your logins, they usually have Trojan horses that capture your passwords.
Make backups and store them in safe place! Easiest way to do a total-backup is to make an “Image” of your harddrive or partition and store it on safe location, but floppies will usually be just fine for storing documents, etc.
Install and Use a Hardware Firewall
Regards,
Kethy Wright
www.perceptionsystem.com
WESTON
Dec
12
ahan ahan asked:
I am not talking about Internet, im talking about computers. As in, rays coming out of the computers etc. Do they have any effect on humans’ brains and they physic? Are there any negative impatcs?
BERNARDO
I am not talking about Internet, im talking about computers. As in, rays coming out of the computers etc. Do they have any effect on humans’ brains and they physic? Are there any negative impatcs?
BERNARDO
Dec
11
How can I connect two computers to one projector, and alternate which computer is being displayed?
Filed Under Other - Hardware | 2 Comments
bdgr47 asked:
I need to be able to connect both computers to one projector, and only show one computer at a time on the projector, and then be able to quickly switch the display between the two computers when needed. Is this possible?
TED
I need to be able to connect both computers to one projector, and only show one computer at a time on the projector, and then be able to quickly switch the display between the two computers when needed. Is this possible?
TED
Dec
11
Filed Under Computers | Comments Off
ravindersingh asked:
Although there are many things that can affect the performance of your computer, there are a few simply things you can do each month to help keep your computer running at maximum performance. This article will focus on two problems that impact the performance of your computer and will then explain what you can do about it.
Problem #1: Computer Hard Disk Files
Your computer is always writing information to your hard disk, no matter what you do. Your computer attempts to keep all file information in the same location on your hard drive. As you add and delete files, blank spaces are left between your files. As you add new programs or files, your computer tries to use these blank spaces.
Over time, this reading and writing of files can affect the way your computer performs. The files eventually become scattered in multiple locations on your hard disk rather than in the same location.
Your computer will still find the information. However, the more scattered the information becomes on your hard drive, the more accesses your computer has to make to find (and gather) the information. This requires your hard disk to work harder and do more reading/writing than is necessary. It will slow down your computer by as much as 200% and causes increased wear and tear on your hard drive.
Problem #2: Spyware
If you use the Internet, at some point you will download a file or software program onto your computer. Sometimes you will know something is being downloaded to your computer. Other times you will have no idea. (Although this article will not talk about small files called “cookies”, you may want to look up information on this subject. Cookies are written onto your computer from the Internet.)
Free computer programs (often referred to as Freeware) are a big hit on the Internet. Every day thousands of users download these “free programs”. Although there are some great freeware programs, these programs often have advertisements or tracking code associated with their use. The term “Spyware” refers to programs that gather information about your computer and (Internet) surfing habits without your knowledge. This information is then sold to a third party company as a means of generating revenue.
The problem with Spyware is that it also impacts the performance of your computer. It can make your computer very sluggish and unresponsive.
Three Steps to Improved Computer Performance
Now that we’ve discussed two problems that affect the performance of your computer, let’s discuss three things you can do to get your computer performance back to normal. You should do these three steps in the order presented. Ideally, you should repeat them about once a month or whenever you notice a change in your computer’s performance.
Step #1: Delete Spyware
The first thing you should do is to delete spyware files or programs from your computer. To do this, you can use a free software program such as Ad-Aware SE Personal Edition from LavaSoft. To get the program, go to www.download.com and search for “Ad-Aware SE” (without the quotes). Select “Download Now” and follow the installation instructions. Once the program is installed, you can scan your computer for spyware files. Then, you can select and delete them from your computer.
Note #1: Always be sure to use the “Check for updates now” option to keep your program current.
Note #2: You need to be aware that when you delete spyware files, some of those “free” programs you downloaded may not continue to work correctly. If you have a program you’ve downloaded and want to continue to use, check very carefully what you select to delete from the “Scanning results” once the scan has been completed.
Step #2: Clean up your Hard Disk
Once the spyware is removed, you need to clean up temporary and unwanted files from your hard disk. To do this on your windows PC, select the start option in the lower left hand corner of your computer screen. Then, select the program option. Under the program option, select “Accessories”. Under the “Accessories” option, select “System Tools”. From the System Tools option, select “Disk Cleanup”.
Select the drive you want to clean from the pull-down menu and select OK. Usually, this is Drive C. If you have more than one hard drive, select one at a time. This program will then scan your computer for files that could be erased from your computer. You can safely erase all temporary and Recycle Bin files. You can also check the box of any other files you want the program to erase.
Step #3: Defrag your Hard Disk
Once all the spyware and temporary files are removed, you need to defrag your hard disk. This process simply rewrites your computer files so they are no longer scattered all over your hard disk, but are written in the same location for quick sequential access.
To defrag your hard disk on your windows PC, select the start option in the lower left hand corner of your computer screen. Then, select the program option. Under the program option, select “Accessories”. Under the “Accessories” option, select “System Tools”. From the System Tools option, select “Disk Defragmenter”. First, select the hard drive from your computer. Usually, this is Drive C. However, many computers have multiple hard drives. Select one at a time.
You can select “Analyze” to have the program check out the hard drive and see if it needs to be defragged. The program will prompt you at the completion of its analysis. Use the defragment option as prompted.
Note: If you’ve never used this option before, I would recommend that you select the defragment option.
Once, you’ve completed these three steps, your computer and hard disk should be able to operate at maximum performance. Don’t forget to repeat these steps at least once a month or whenever you notice a change in your computer’s performance
PETER
Although there are many things that can affect the performance of your computer, there are a few simply things you can do each month to help keep your computer running at maximum performance. This article will focus on two problems that impact the performance of your computer and will then explain what you can do about it.
Problem #1: Computer Hard Disk Files
Your computer is always writing information to your hard disk, no matter what you do. Your computer attempts to keep all file information in the same location on your hard drive. As you add and delete files, blank spaces are left between your files. As you add new programs or files, your computer tries to use these blank spaces.
Over time, this reading and writing of files can affect the way your computer performs. The files eventually become scattered in multiple locations on your hard disk rather than in the same location.
Your computer will still find the information. However, the more scattered the information becomes on your hard drive, the more accesses your computer has to make to find (and gather) the information. This requires your hard disk to work harder and do more reading/writing than is necessary. It will slow down your computer by as much as 200% and causes increased wear and tear on your hard drive.
Problem #2: Spyware
If you use the Internet, at some point you will download a file or software program onto your computer. Sometimes you will know something is being downloaded to your computer. Other times you will have no idea. (Although this article will not talk about small files called “cookies”, you may want to look up information on this subject. Cookies are written onto your computer from the Internet.)
Free computer programs (often referred to as Freeware) are a big hit on the Internet. Every day thousands of users download these “free programs”. Although there are some great freeware programs, these programs often have advertisements or tracking code associated with their use. The term “Spyware” refers to programs that gather information about your computer and (Internet) surfing habits without your knowledge. This information is then sold to a third party company as a means of generating revenue.
The problem with Spyware is that it also impacts the performance of your computer. It can make your computer very sluggish and unresponsive.
Three Steps to Improved Computer Performance
Now that we’ve discussed two problems that affect the performance of your computer, let’s discuss three things you can do to get your computer performance back to normal. You should do these three steps in the order presented. Ideally, you should repeat them about once a month or whenever you notice a change in your computer’s performance.
Step #1: Delete Spyware
The first thing you should do is to delete spyware files or programs from your computer. To do this, you can use a free software program such as Ad-Aware SE Personal Edition from LavaSoft. To get the program, go to www.download.com and search for “Ad-Aware SE” (without the quotes). Select “Download Now” and follow the installation instructions. Once the program is installed, you can scan your computer for spyware files. Then, you can select and delete them from your computer.
Note #1: Always be sure to use the “Check for updates now” option to keep your program current.
Note #2: You need to be aware that when you delete spyware files, some of those “free” programs you downloaded may not continue to work correctly. If you have a program you’ve downloaded and want to continue to use, check very carefully what you select to delete from the “Scanning results” once the scan has been completed.
Step #2: Clean up your Hard Disk
Once the spyware is removed, you need to clean up temporary and unwanted files from your hard disk. To do this on your windows PC, select the start option in the lower left hand corner of your computer screen. Then, select the program option. Under the program option, select “Accessories”. Under the “Accessories” option, select “System Tools”. From the System Tools option, select “Disk Cleanup”.
Select the drive you want to clean from the pull-down menu and select OK. Usually, this is Drive C. If you have more than one hard drive, select one at a time. This program will then scan your computer for files that could be erased from your computer. You can safely erase all temporary and Recycle Bin files. You can also check the box of any other files you want the program to erase.
Step #3: Defrag your Hard Disk
Once all the spyware and temporary files are removed, you need to defrag your hard disk. This process simply rewrites your computer files so they are no longer scattered all over your hard disk, but are written in the same location for quick sequential access.
To defrag your hard disk on your windows PC, select the start option in the lower left hand corner of your computer screen. Then, select the program option. Under the program option, select “Accessories”. Under the “Accessories” option, select “System Tools”. From the System Tools option, select “Disk Defragmenter”. First, select the hard drive from your computer. Usually, this is Drive C. However, many computers have multiple hard drives. Select one at a time.
You can select “Analyze” to have the program check out the hard drive and see if it needs to be defragged. The program will prompt you at the completion of its analysis. Use the defragment option as prompted.
Note: If you’ve never used this option before, I would recommend that you select the defragment option.
Once, you’ve completed these three steps, your computer and hard disk should be able to operate at maximum performance. Don’t forget to repeat these steps at least once a month or whenever you notice a change in your computer’s performance
PETER
Dec
9
Filed Under Software | Comments Off
Computer Monitoring Software asked:
Keystroke recorder utility records all information which is pressed by keyboard as password, username, online chat conversation, email in an encrypted log file. Advance Keylogger software traces visited websites, screenshots, URLs and other activities. Stealth Keylogger tool saves information in an encrypted log file and send to user specified email id in a regular time interval. Advance Keylogger software records all typed text on word, access, power point, notepad, excel or on any other document. Professional PC monitoring tool is specially designed to capture screenshot of login session, email id, application status on main window screen. Advance Keylogger utility is not detected by any antivirus software. Keystroke recorder tool automatically records keystroke information or capture screen shot when any person uses system in your absence. Keylogger utility helps parents to watch activities of his children net surfing or other activities performed on computer system. Advance Keylogger records all information in text files for further use. Professional PC monitoring tool does not need any other technical support to use. Windows Vista Keylogger software provides graphical user interface (GUI) for end user. Keystroke tracker utility supports Windows XP, Windows Vista, Windows NT, Windows ME, Windows 98 and Windows 2000.
Features:
* Professional PC monitoring tool records all visited screen shots, URLs, Windows snapshots in a regular interval of time.
* Advance Keylogger software works in invisible mode.
* Stealth Keylogger utility is not detected by any antivirus.
* Windows Vista Keylogger software has Graphical User Interface (GUI).
* Advance Keylogger utility supports national and international keyboards.
NEAL
Keystroke recorder utility records all information which is pressed by keyboard as password, username, online chat conversation, email in an encrypted log file. Advance Keylogger software traces visited websites, screenshots, URLs and other activities. Stealth Keylogger tool saves information in an encrypted log file and send to user specified email id in a regular time interval. Advance Keylogger software records all typed text on word, access, power point, notepad, excel or on any other document. Professional PC monitoring tool is specially designed to capture screenshot of login session, email id, application status on main window screen. Advance Keylogger utility is not detected by any antivirus software. Keystroke recorder tool automatically records keystroke information or capture screen shot when any person uses system in your absence. Keylogger utility helps parents to watch activities of his children net surfing or other activities performed on computer system. Advance Keylogger records all information in text files for further use. Professional PC monitoring tool does not need any other technical support to use. Windows Vista Keylogger software provides graphical user interface (GUI) for end user. Keystroke tracker utility supports Windows XP, Windows Vista, Windows NT, Windows ME, Windows 98 and Windows 2000.
Features:
* Professional PC monitoring tool records all visited screen shots, URLs, Windows snapshots in a regular interval of time.
* Advance Keylogger software works in invisible mode.
* Stealth Keylogger utility is not detected by any antivirus.
* Windows Vista Keylogger software has Graphical User Interface (GUI).
* Advance Keylogger utility supports national and international keyboards.
NEAL
Dec
9
How do I network a bunch of computers already sharing an internet connection?
Filed Under Computer Networking | 1 Comment
kmarai asked:
My computers are all successfully sharing a dsl internet connection via a wireless router. But I can’t figure out how to get them to see each other on a file sharing network, What am I missing? No single computer can see any other computers, but they can all use the dsl connection. What gives? I’ve networked the old fashioned way before so what am I missing?
JOSHUA
My computers are all successfully sharing a dsl internet connection via a wireless router. But I can’t figure out how to get them to see each other on a file sharing network, What am I missing? No single computer can see any other computers, but they can all use the dsl connection. What gives? I’ve networked the old fashioned way before so what am I missing?
JOSHUA