Computer Interview Questions and Answers

Answer - 51 : -  sed is stream editor, a Unix tool for working with streams of text data. See the awful truth about sed.

Answer - 52 : - you need to enable hibernate option in your computer.For this follow this stepsGo To Control Pannel >> Power Option >> Hibernate >> and then check on enable hibernation and click on apply.You can also set ur power button to do hibernation by selecting hibernate from drop down menu of whenever click power button option in power option of control pannel

Answer - 53 : - Wi-Fi, IrDa, EDGE, UWB (Ultra Wide Band)

Answer - 54 : - Wi-Fi, IrDa, EDGE, UWB (Ultra Wide Band)

Answer - 55 : - Wi-Fi, IrDa, EDGE, UWB (Ultra Wide Band)

Answer - 56 : - Reverse Command :Reverse N Lines : if there is not enough space left on the current page for atleast n lines it starts a new page RESERVE If insufficient space is there for listing output reserve statement encounters NEW-PAGE.But before going to new page it processes END-OF-PAGE.  

Answer - 57 : - The amount of memory, or RAM, installed in your computer can significantly affect its performance. For example, having several programs open at the same time may cause your computer to slow down if all the memory is being used. Having too little memory may also prevent you from being able to open applications that require a lot of RAM. (This information is typically listed in the program's system requirements). Therefore, it is helpful to know how much memory is installed in your computer. In Windows, you can view the amount of memory installed in your computer by right-clicking "My Computer" and selecting "Properties..." A window will open with the amount of RAM displayed underneath the "Computer" section of the window. This window can also be viewed by opening the "System" Control Panel. If you want to see how much memory your Windows computer is using, you can open the Windows Task Manager by pressing Control-Alt-Delete or Control-Shift-Esc. You can also right-click the Taskbar and select "Task Manager." Once the Task Manager is open, click the "Performance" tab to view how much physical memory is installed in your computer and how much is available. In Mac OS X, you can view the amount of memory your computer has by simply selecting "About This Mac" from the Apple Menu. The amount of memory is displayed beneath the processor information. If you click "More Info..." the System Profiler will open. You can then select the "Memory" option in the sidebar to view what types of memory modules are installed in each slot. To see how much RAM you Mac is using, open the Activity Monitor application in the Utilities folder. Select the "System Memory" tab near the bottom of the window to view how much memory is being used and how much is available. The "RSIZE" field in the main section of the window indicates how much memory each process is using. This can help you determine which programs use the most memory.

Answer - 58 : - 1:- Power cycling an electronic device is a technical way of saying "resetting" it. When you power cycle a device, you turn it off and then turn it back on again. Pretty high-tech, huh? Usually, you should let the device sit for a couple seconds after turning it off to make sure the memory in the device is fully cleared before turning it back on. Any electronic device can be power cycled, but the term is frequently used with cable modems, DSL modems, and routers. This is because small internal errors in these devices can prevent them from functioning correctly. Resetting them typically fixes the errors and allows them to work correctly again. 2: - 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.    

Answer - 59 : - 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.  

Answer - 60 : - Firewire is a high-speed digital interface that comes in two varieties - 1394a (or just 1394) and 1394b. The 1394a standard (Firewire 400) supports data transfer rates up to 400 Mbps and uses a 6-pin connection. The 1394b standard (Firewire 800) can transfer data up to 800 Mbps and uses a 9-pin connection. An 6-pin to 9-pin adapter can be used to plug a 1394a cable into a 1394b port, but the speed will be limited to 400 Mbps.