About computers and their technologies

1. List two tasks of an operating system and name two operating systems.
   -         Memory Management Disk and File Management  ,   Hard disk / Processors
2. Why is it especially useful to have the ability to change hardware profiles for laptops?
   -         Because, a hardware profile lets you start the computer with different hardware configurations and this is most useful on laptops
3. How can you restore your system to a previous point, after a crash, in Windows XP?
   -         The System Restore tab lets you disable/enable and configure the new System Restore feature in Windows XP.When it’s enabled on one or more drives, Windows XP monitors the changes you make on your drives.It creates what is called a restore point.if a system crash is occurred, it can restore your data back to the restore point.You can turn on System Restore for all drives on your system or for individual drives.Note that turning off System Restore on the system drive (the drive on which the OS is installed) automatically turns it off on all drives. 
4. What is the Windows Registry and how can you edit it in Windows XP? -         It is special congiguration database where windows configuration information is stored Windows XP has to implications that can be used to edit the Registry, REGEDIT and REGEDT 31. 
5. What is the purpose of the HKEY_CURRENT_CONFIG registry hive?
   -         It provides quick access to a number of commonly needed keys that are otherwise bried deep in the HKEY_LOCAL_MACHINE structure.
6. Where is the file PAGEFILE.SYS located, for Windows XP, and how can you see it?
   -         It is located in the root directory of the drive on which the OS file are installed to see the file in Windows Explorer, Folder Options must be configurated to hidden files.
7. Name some key boot files for the Windows operating system.
   -         NTLDR, BOOT.INI, BOOTSECT.DOC, NTSDETECT.DOC, NTBOOTDD.SYS, NTOSKRNL.EXE-          
8. How do you configure system files in Windows XP?
   -         MSCONFIG system_configuration. Tabs in the Windows XP version of  MSCONFIG.General. System, /ini , win.ini, startup boot.ini and services. The boot ini tab lets you modify the Boot.ini file and also specify other boot options. On the service tab, you can view the services installed on the system and their current status(running or stopped).
9. Would you find MFT in FAT or in NTFS.
   -         I can find MFT in NTFS, because it is a part of  NTFS-          
10. List the basic components of a PC.
    -         Motherboards, Processors, memory,storage devices,power supplies, display devices, input devices, adapter cards, parts and cables, cooling systems
11. What are the components you can find on the motherboard?
    -         CPU, underlyin circuitry, explansion slots, video components, RAM slots, variety of other chip
12. What are the functions of the Northbridge and the Southbridge?
    -         Northbridge: communications between the CPU,RAM,AGP or PCI Express and the southbridge.
    Southbridge: it also known as the I/O Controller Hub. Responsible for managing communications with the other expansion buses, such as PCI, USB and legacy buses          
13. What are DIMM and RAMBUS?
    -         DIMM is 64 bit memory modules that are used as a package for the SDRAM family RAMBUS(RIMM)
14. What is better quality, true component video or S video?
    -Svideo is a component video technology that combines the two chromianonce signals into one video quality not quite as high as that of true component video. 
15. What is a port?
    -         It is a generic name for any connector an a computer into a which cable can be plugged.
16. What are the main differences between a laptop motherboard and a PC motherboard?
    -         Primary differences between a L.M and a D.M; the lack of standarts, the much smaller form factor, It serves a lot of space.
17. What are the characteristics of Bluetooth?
    -         Bluetooth signals are good only for about 30 feet.
    -         It isn’t designed for wireless networking; it is designed for wireless communication.
    -         It is fast and reliable transferring small amounts of data short distances
    -         It also uses little power comperad to cellular or WiFi options popular in cell phones, handheld computers and laptops.