The Disk Defragmenter Utility Computer Science Essay

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Disk defragmenter is the utility that is used for regular maintenance of computer system. It arranges the files and folders residing on the hard drive in contiguous storage spaces that is the files are stored in continuous order in small units called clusters on the hard drive. By doing this, the time to access any file is reduced. Files are usually fragmented when user deletes and modifies the files. This means that files are not sequentially stored in clusters. It improves the computer system in following ways:

Disk cleanup utility cleans up unnecessary files from the hard disk to conserve space. Disk cleanup utility first scans and analyze the disk, list all the files and folders which can be deleted. It then depends on the user whether he wants to delete all the detected files or few files among those. The files which are deleted during disk cleanup include temporary internet files, downloaded program files, content of recycle bin, windows temporary files such as error reports and unused restore points. There is also an option for compression of files to save disk space. If there will be more space on the disk then the read/write heads will take less time to search file on the disk and open it. In this way computer system will work faster that is the disk cleanup utility boosts up the speed of computer system.

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Backup software utility is made to make copies of all the data residing on system's hard disk. If the data stored on hard disk wipes out due to failure of disk, then your backup of data is used to restore your system. For example if a student's computer system is accidently corrupted, he would lose all his work and assignments stored on computer. If he keeps a backup of his system, he can restore his system and his system will run smoothly as it was running before the accident. After restoring system the system will perform in the same way as it was before the accident of hard drive. It is very helpful to keep your backup data in a safe place so it may not be lost. Backup utility differs from simple copy and pasting. In simple copy and pasting the data is not modified in backup utility the data is modified when you backup after first time. Backup software also copies the original version of any zipped file. Every file has an archive bit. Archive bit include two digits 0 and 1. Files with archive bit 1 means that these files have changed since last backup and files with archive bit 0 means that these files have not changed since last backup. So when user runs backup utility, it copies all the files that have been modified of changed since last backup.

ANTI-VIRUS:

Anti-virus softwares are designed to protect your computer systems from different viruses, worms and Trojan horses. When virus enters your computer, it hides itself so it cannot be removed easily and it badly affects your computer. It slows down the speed of your system. Anti-virus software detects these viruses and removes them. When these viruses are removed, the system works smoothly. New viruses are created daily and to protect your system against these viruses, the anti-virus definitions must be updated. The two best known anti-viruses for windows are Norton Anti-virus for Symantec and Virus scan by McAfee.

FIREWALL:

Firewall utility protects your computer against unauthorised and illegal access. Firewall monitors all the transmissions to and from your computer. For example you are connected to internet through port: 80 and have blocked all other ports, and all the data is transmitted through this port, but if any data tries to enter through port: 138, firewall will prevent that data and inform you. When connected to internet, your computer is at maximum risk of being hacked. Basically hacking is an illegal access to a personal computer. And firewall protects your computer against this illegal access. Operating system often includes a firewall. Windows automatically enables its firewall when it is installed. Firewall differs from anti-virus software. Firewall does not remove virus from your computer. It just gives protection from malicious software known as worms.

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Fresh diagnose is a system diagnostic utility. It diagnoses the system performance. It also performs benchmarking on system. Benchmarking is a process of comparing the performance of your computer. When you perform system diagnose, it gives you the detail about the working of your system's components like speed of processor, available space of memory, information about BIOs chip, etc. it also improves the performance of system by reporting the errors and problems to the user. In this way user will be aware of errors and problem and will try to remove these errors for the proper working of computer system.

DXDIAG:

Dxdiag or direct diagnostic is a utility that gives complete information about your video and sound cards. It helps you fix problems related to DirectX multimedia technologies. DirectX multimedia suit include Direct3D, DirectDraw, DirectMusic, DirectPlay, DirectSound. If you have problem getting game animation or a video to run properly, run DirectX diagnostic tool to find the source of issue. DirectX diagnostic also contributes towards the improvement of computer system.

REGISTRY CLEANERS:

"Registry is the database containing hardware, operating system, policy, file association, application and user configuration." Registry cleaner utility deletes unwanted and unnecessary files from the registry. Registry cleaners can find, repair and remove invalid registry entries, scan and remove invalid software, start menu information and restore information. As registry is the most important part of CPU, so it should not be overloaded with data. If it would be overloaded, it would work slowly. For better performance of computer system registry must be cleaned from time to time.

WINZIP:

Winzip is a file compression utility. It compresses files to save space on storage device. Winzip compress files without affecting the data and these files can also revert to their original size. For example if a person wants to transfer data to a memory stick with capacity 256MB. If the size of file which he wants to transfer is more than the capacity of memory stick then he will use Winzip file compression utility to reduce the size of file so it can be transferred to memory stick. Winzip improves the performance of computer syste by saving the space on system's hard disk. If there would be less load on hard disk, it will take shorter time to open any file and it will execute commands faster.

CPU-Z:

CPU-Z utility gives all the necessary information about the processor like make and model of processor, number of cores, bus speed, L2 cache. CPU-Z utility also gives information about RAM like total number of slots on the motherboard, number of slots in use and exact type of RAM in each slot.