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Hardware Interview Questions Answers

Question 1 : 20 things you didn't know about Windows XP

Answer 1 : 1. It boasts how long it can stay up. Whereas previous versions of Windows were coy about how long they went between boots, XP is positively proud of its stamina. Go to the Command Prompt in the Accessories menu from the All Programs start button option, and then type 'systeminfo'. The computer will produce a lot of useful info, including the uptime. If you want to keep these, type 'systeminfo > info.txt'. This creates a file called info.txt you can look at later with Notepad. (Professional Edition only). 2. You can delete files immediately, without having them move to the Recycle Bin first. Go to the Start menu, select Run... and type 'gpedit.msc'; then select User Configuration, Administrative Templates, Windows Components, Windows Explorer and find the Do not move deleted files to the Recycle Bin setting. Set it. Poking around in gpedit will reveal a great many interface and system options, but take care -- some may stop your computer behaving as you wish. (Professional Edition only). 3. You can lock your XP workstation with two clicks of the mouse. Create a new shortcut on your desktop using a right mouse click, and enter 'rundll32.exe user32.dll,LockWorkStation' in the location field. Give the shortcut a name you like. That's it -- just double click on it and your computer will be locked. And if that's not easy enough, Windows key + L will do the same. 4. XP hides some system software you might want to remove, such as Windows Messenger, but you can tickle it and make it disgorge everything. Using Notepad or Edit, edit the text file /windows/inf/sysoc.inf, search for the word 'hide' and remove it. You can then go to the Add or Remove Programs in the Control Panel, select Add/Remove Windows Components and there will be your prey, exposed and vulnerable   5. For those skilled in the art of DOS batch files, XP has a number of interesting new commands. These include 'eventcreate' and 'eventtriggers' for creating and watching system events, 'typeperf' for monitoring performance of various subsystems, and 'schtasks' for handling scheduled tasks. As usual, typing the command name followed by /? will give a list of options -- they're all far too baroque to go into here. 6. XP has IP version 6 support -- the next generation of IP. Unfortunately t

Question 2 : Can I replace non-ECC memory with ECC memory?

Answer 2 : ECC (Error Correcting Code) memory is parity memory and non-ECC memory is non-parity. Parity memory has an extra chip on the module that checks for errors in the transfer of information to and from the memory. So if a memory module has an odd number of chips, it is parity RAM. Many motherboards support both ECC and non-ECC memory. Some sources say you can even mix the two types of RAM and the ECC RAM will work as non-ECC memory. However, most memory companies do not support mixing the two types, so try it at your own risk. Since most motherboards will accept ECC memory, it often depends on if your computer's BIOS supports it. You may have to check your computer's manual to find the answer. If you have a choice, non-ECC memory is typically cheaper than ECC memory and works slightly faster. So when in doubt, use non-ECC memory.

Question 3 : Can I use a generic v.92 modem from Wal-Mart in my Dell computer?

Answer 3 : It may surprise you to learn that most companies don't make the modems that go into their computers. Instead, companies such as Dell use modems from other manufacturers who specialize in making modems. Therefore, a modem you buy from Wal-Mart should work just as well as one you buy from Dell. However, you should check the system requirements of the modem you are interested in to make sure your computer supports it. It is most important to check the required operating system since the drivers need to be compatible with the OS. If the software drivers don't work with your operating system, your computer may not be able to recognize the modem.

Question 4 : Create a Hidden User Account

Answer 4 : This tweak allows an account that is normally displayed on the Welcome screen to be hidden from view. To log on using the account it's necessary to use the Log On To Windows dialog box similar to the one in Windows 2000 i.e. press CTRL+ALT+DEL twice. [Start] [Run] [Regedit] Go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon\SpecialAccounts\UserList Modify/Create DWORD Value of Data type REG_DWORD Named [Type Name of Account to be Hidden] Setting for Value Data: [0 = Account is Hidden / 1 = Enabled] Exit Registry / Reboot While the account is hidden on the Welcome screen, note that the account profile will be visible in C:\Documents and Settings or wherever user profiles are stored as well as in Local Users and Groups.

Question 5 : How can I print to a printer connected to an Airport Base Station?

Answer 5 : The Airport Extreme and Airport Express Base Stations both have a built-in USB port that allows you to connect a printer. Whatever printer you decide to connect to an Airport Base Station will be available to all computers connected to the Base Station. In order to print to an Airport printer, you first need to make sure your computer is connected to the wireless router (the base station) either wirelessly, or directly with an Ethernet cable. If you are using a Mac, you can simply select the Base Station from the drop-down menu by clicking the Airport icon in the upper right-hand corner of the screen. Windows should allow you to choose the Base Station if you click the wireless network icon in the systray, located in the lower-right part of the screen. The second thing you need to do is make sure the printer drivers for the printer are installed on the computer. Your computer will not recognize the wireless printer if you have not installed the correct drivers. You should be able to use the disc(s) that came with the printer or download the drivers from the manufacturer's website. After installing the drivers, you may need to restart your computer. Once you've installed the printer drivers and established a network connection with the Airport Base Station, you should be able to print to the wireless printer. Just select "Print..." in whatever program you want to print from and then choose the printer from the list in the dialog box that pops up. The computer should recognize the printer as if it was connected directly to the machine. Once you click "Print," the file will get sent to the Base Station and the printer connected to it will print the document.

Question 6 : How can I tell if a memory module is ECC parity RAM or non-ECC non-parity RAM?

Answer 6 : Parity memory modules have an extra chip on them to check for errors. Therefore, non-parity memory should have an even number of chips on the module and parity memory should have an odd number. Typically, there will be 8 chips on a non-ECC module and 9 chips on an ECC module. However, some parity SIMMs can have 12, 18, 24 or 36 chips. Therefore, a sure-fire way to determine of a memory module is parity or non-parity is to divide the number of chips on the module by three. If the number is evenly divisible by 3, it is a parity, or ECC module. If the number of chips is not divisible by three, the module is non-parity, or non-ECC.

Question 7 : How can I tell if my CD/DVD drive burns CDs or DVDs?

Answer 7 : If the drive only says "CD-ROM" or "DVD-ROM" then it probably does not burn CDs or DVDs. If it says CD-R, then it can burn recordable CDs and if it says CD-RW, it can write and rewrite to rewritable CDs. If the drive says DVD-R or DVD+R, it can burn DVD-R or DVD+R discs. If it says DVD-RW or DVD+RW, then it can burn rewritable DVDs. Drives that can burn CDs and read DVDs are often referred to as "Combo Drives" by many PC manufacturers. Apple Computer uses the term "SuperDrive" to refer to drives that can read and write to both CDs and DVDs.

Question 8 : How can I upgrade my computer to USB 2.0?

Answer 8 : The answer to this question depends on if you have a desktop or a laptop computer. If you have a desktop, you need at least one available PCI slot. This expansion slot is located on the back of your computer and and is usually covered by a metal plate that you must remove before installing a PCI card. You can install a USB 2.0 PCI card into this slot, which will give your computer USB 2.0 connectivity. Most USB 2.0 cards have several USB ports on them, so you can connect multiple USB devices to the card. If you have a laptop, your computer will need to have a PCMCIA slot. (It is also called a PC card slot, which is much easier to say.) The slot is typically located on the side of the computer and is a little over five centimeters wide. It should be covered by a protective flap that will push in when you press on it. You can install a USB 2.0 PC card into this slot, which will give your computer one or more USB 2.0 connections. As long as your operating system supports USB 2.0, you can install a USB 2.0 card whether or not your computer already has USB 1.1. Note that connecting a USB 2.0 hub or USB 2.0 device to a USB 1.1 port will cause the device to run at the slower USB 1.1 speed. Since USB 2.0 is 30-40 times faster than USB 1.1, it may be worth the upgrade.  

Question 9 : How do find out how much RAM my computer has and how much it is using?

Answer 9 : Knowing how much RAM, or memory, your computer has is important because it determines what programs you can run on your machine. The more RAM you have, the more memory-intensive programs you can run. It also allows you to run more programs at one time. Having "excess" RAM is even beneficial, as it helps your computer avoid bottlenecks when processing large amounts of data. If you are using Windows, you can find out how much RAM you have by right-clicking the My Computer icon and selecting "Properties..." This will open the System Properties window and you can view the amount of physical memory installed under the General tab. You can find out how much memory your computer is currently using by right-clicking anywhere in the open space of the Taskbar and selecting "Task Manager." Then click the Performance tab of the window that opens and you will be able to view your memory usage. If you are using Mac OS X, you can see you much RAM is installed in your computer by choosing "About This Mac" from the Apple menu. This is located in the far upper left-hand corner of the screen. To find out how much memory is being used, open the Activity Monitor program, located in the Utilities folder (within the Applications folder). Then click the System Memory button near the bottom of the window to see how much memory your system is currently using.

Question 10 : How to Block websites without any software?

Answer 10 : Steps 1] Browse C:\WINDOWS\system32\drivers\etc 2] Find the file named "HOSTS" 3] Open it in notepad 4] Under "127.0.0.1 localhost" Add 127.0.0.2 www.orkut.com , and that site will no longer be accessable. 5] Done! example : 127.0.0.1 localhost 127.0.0.2 www.orkut.com- www.orkut.com is now unaccessable For every site after that you want to add, just add "1" to the last number in the internal ip (127.0.0.2) and then the addy like before. ie: 127.0.0.3 www.yahoo.com 127.0.0.4 www.msn.com 127.0.0.5 www.google.com This also works with banner sites, just find the host name of the server with the banners and do the same thing with that addy. Hope this small tutorial could keep you going in simple way of blocking websites..  

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