B: Explain the effect of these activities on the performance of the computer system; indicate why they are undertaken and what benefits they bring to the system.
Installing a firewall on computer affects beneficially on the system such as your computer increase the security that you’re PC and contents are being protected. This activity has been taken to monitor incoming and outgoing security alerts and the firewall company will record and track down an intrusion attempt depending on the severity.
Anti-virus software is a computer program designed to detect and respond to malicious software, such as viruses and worms but some time anti-virus software does not recognize the latest virus program. So, to secure the computer anti-virus needs to update. New viruses are developed everyday so in order to detect the latest malicious programs every Anti-virus Software needs to update to secure computer from new viruses. You can also organize full system schedule, which automatically updates and scans your system by your software at particular day and time which you scheduled.
Patches is a type of software which provides better security information to help users by protecting users against viruses and worms. Firewall is utility software which protects computer and users against hackers and authorized users. Defragmenter is a process which improves hard drive performances, it deletes all temporary files, junks files, dump files etc. therefore, when you run defragmenter it reduce the unnecessary data and allows storage to used more efficiently. Drive formatting makes computer system work faster than before.
Friday 7 November 2008
Upgrading and Existing Computer
Upgrading an Existing Computer:
Upgrading a computer consists of altering or adding to its component parts, so that the overall system is improved. This improvement may be one of speed or it may be one of added functionality. In some cases, this upgrade can be achieved by external odd-ons, or it may result from additions or alterations inside the computer case itself. An example of external improvement would be the fitting of an external modem or mouse, while an integral upgrade would be adding extra memory or a sound card.
Upgrading can include RAM: Adding RAM is often the most cost-effective upgrade you can make to speed up a sluggish computer. PCs that had more than enough RAM when they were new often have trouble keeping up with the demands of the latest programs after a few years. New operating systems almost always call for more memory, too. When a computer runs short of RAM, it's forced to swap the overflow data on and off of the hard drive, which can significantly slow performance.
User can upgrade windows by Vista such as before if he was using Windows’ 2000 you can upgrade it by installing windows vista. If you don’t have Windows Vista drivers for all your hardware, it is a good idea to download all the drivers from the website and save all the necessary drivers on a CD-R before you start the installation. The need of upgrading it; vista Protect against hardware failure with Windows Complete PC Backup and Restore, it gives better protect your data against loss with Windows Bit Locker Drive Encryption.
Install Anti-virus software: clean up the hard drive and other unnecessary files which is no longer required.
If DVD drive is not capable to read data form other storage CD than clean a DVD driver scanner with cleaner CD. These read errors could cause software installation issues or issues while running the program. If DVD drive is not working than replace with new drive.
Upgrading a computer consists of altering or adding to its component parts, so that the overall system is improved. This improvement may be one of speed or it may be one of added functionality. In some cases, this upgrade can be achieved by external odd-ons, or it may result from additions or alterations inside the computer case itself. An example of external improvement would be the fitting of an external modem or mouse, while an integral upgrade would be adding extra memory or a sound card.
Upgrading can include RAM: Adding RAM is often the most cost-effective upgrade you can make to speed up a sluggish computer. PCs that had more than enough RAM when they were new often have trouble keeping up with the demands of the latest programs after a few years. New operating systems almost always call for more memory, too. When a computer runs short of RAM, it's forced to swap the overflow data on and off of the hard drive, which can significantly slow performance.
User can upgrade windows by Vista such as before if he was using Windows’ 2000 you can upgrade it by installing windows vista. If you don’t have Windows Vista drivers for all your hardware, it is a good idea to download all the drivers from the website and save all the necessary drivers on a CD-R before you start the installation. The need of upgrading it; vista Protect against hardware failure with Windows Complete PC Backup and Restore, it gives better protect your data against loss with Windows Bit Locker Drive Encryption.
Install Anti-virus software: clean up the hard drive and other unnecessary files which is no longer required.
If DVD drive is not capable to read data form other storage CD than clean a DVD driver scanner with cleaner CD. These read errors could cause software installation issues or issues while running the program. If DVD drive is not working than replace with new drive.
Safety Standards for using a PC
Safety Standards for using a PC
Health and safety is require in every aspect of handling PC such as
The monitor should be square in front of you. Not to the right or to the left but right in front. Looking to the side, together with other bad habits, will twist the spine and neck.
The Keyboard should be straight in front of you and easy to reach. Your wrists should be fairly straight - see the red line in the picture above. You may want to invest in a wrist support, which lies in front of the keyboard and can be bought from computer shops.
Keep the mouse close to your keyboard and work area. Your lower arm should be about parallel to your desk with your elbows just a little lower. Don't let the weight of your arm rest on the underside of your wrist. There are special mouse pads with a gel wrist rest which provide great support.
Health and safety is require in every aspect of handling PC such as
The monitor should be square in front of you. Not to the right or to the left but right in front. Looking to the side, together with other bad habits, will twist the spine and neck.
The Keyboard should be straight in front of you and easy to reach. Your wrists should be fairly straight - see the red line in the picture above. You may want to invest in a wrist support, which lies in front of the keyboard and can be bought from computer shops.
Keep the mouse close to your keyboard and work area. Your lower arm should be about parallel to your desk with your elbows just a little lower. Don't let the weight of your arm rest on the underside of your wrist. There are special mouse pads with a gel wrist rest which provide great support.
Thursday 6 November 2008
Operating System
A) Describe the purpose, features and functions of two different operating systems.
Operating System
An 'operating system' (commonly abbreviated OS and O/S) is the software component of a computer system that is responsible for the management and coordination of activities and the sharing of the resources of the computer. The operating system acts as a host for applications that are run on the machine.
A program which acts as an interface between a user of a computer and the computer hardware.
Functions of Operating System
System tools (programs) used to monitor computer performance, debug problems, or maintain parts of the system.
A set of libraries or functions that programs may use to perform specific tasks especially relating to interfacing with computer system components.
The operating system makes these interfacing functions along with its other functions operate smoothly and these functions are mostly transparent to the user.
In a multitasking operating system where multiple programs can be running at the same time, the operating system determines which applications should run in what order and how much time should be allowed for each application before giving another application a turn.
It manages the sharing of internal memory among multiple applications.
It handles and monitors input and output to and from attached hardware devices, such as hard disks, printers, and dial-up ports.
Different Operating Systems
Windows 2000:
Windows 2000 introduced many of the new features of Windows 98 and Windows 98 SE into the NT line, such as the Windows Desktop Update, Internet Explorer 5, Outlook Express, NetMeeting, FAT32 support, Windows Driver Model, Internet Connection Sharing, and Windows Media PlayerNet. Certain new features are common across all editions of Windows 2000,
Windows 2000 also comes with several system utilities. This protects critical Windows system files by preventing programs other than Microsoft's operating system update mechanisms such as the Package Installer, Windows Installer and other update components from modifying them.
Windows XP:
Windows XP is a family of 32-bit and 64-bit operating systems produced by Microsoft for use on personal computers, including home and business desktops, notebook computers, and media centers. The name "XP" stands for eXPerience. Windows XP is the successor to both Windows 2000 Professional and Windows Me, and is the first consumer-oriented operating system produced by Microsoft to be built on the Windows NT kernel (version 5.1) and architecture. It presents a significantly redesigned graphical user interface, a change Microsoft promoted as more user-friendly than previous versions of Windows.
Operating System
An 'operating system' (commonly abbreviated OS and O/S) is the software component of a computer system that is responsible for the management and coordination of activities and the sharing of the resources of the computer. The operating system acts as a host for applications that are run on the machine.
A program which acts as an interface between a user of a computer and the computer hardware.
Functions of Operating System
System tools (programs) used to monitor computer performance, debug problems, or maintain parts of the system.
A set of libraries or functions that programs may use to perform specific tasks especially relating to interfacing with computer system components.
The operating system makes these interfacing functions along with its other functions operate smoothly and these functions are mostly transparent to the user.
In a multitasking operating system where multiple programs can be running at the same time, the operating system determines which applications should run in what order and how much time should be allowed for each application before giving another application a turn.
It manages the sharing of internal memory among multiple applications.
It handles and monitors input and output to and from attached hardware devices, such as hard disks, printers, and dial-up ports.
Different Operating Systems
Windows 2000:
Windows 2000 introduced many of the new features of Windows 98 and Windows 98 SE into the NT line, such as the Windows Desktop Update, Internet Explorer 5, Outlook Express, NetMeeting, FAT32 support, Windows Driver Model, Internet Connection Sharing, and Windows Media PlayerNet. Certain new features are common across all editions of Windows 2000,
Windows 2000 also comes with several system utilities. This protects critical Windows system files by preventing programs other than Microsoft's operating system update mechanisms such as the Package Installer, Windows Installer and other update components from modifying them.
Windows XP:
Windows XP is a family of 32-bit and 64-bit operating systems produced by Microsoft for use on personal computers, including home and business desktops, notebook computers, and media centers. The name "XP" stands for eXPerience. Windows XP is the successor to both Windows 2000 Professional and Windows Me, and is the first consumer-oriented operating system produced by Microsoft to be built on the Windows NT kernel (version 5.1) and architecture. It presents a significantly redesigned graphical user interface, a change Microsoft promoted as more user-friendly than previous versions of Windows.
Explaining the function of the system unit and components
A) Function of system unit components and how they communicate.
The main components that comprise the PC are:
· The main system unit
· Storage devices
· Input devices
· Output devices
System Unit: A system unit, also known as a base unit, is the main body of a desktop computer, typically consisting of a metal or (rarely) plastic enclosure containing the motherboard, power supply, cooling fans, internal disk drives, and the memory modules and expansion cards that are plugged into the motherboard, such as video and network cards.
Inside each case there is a main electronic board, called the ‘motherboard’ that houses the CPU, Memory, etc
Motherboard
The main circuit board of a computer. Each motherboard is designed to handle a particular computing processor. The motherboard contains the connectors for attaching additional boards. Typically, the motherboard contains the CPU, BIOS, memory, mass storage interfaces, serial and parallel ports, expansion slots, and all the controllers required to control standard peripheral devices, such as the screen display, keyboard, and disk drive. All the power, data and addressing information is carried between components on the copper tracks etched on to the printed circuit board.
CPU (Central Processing Unit)
The main chip in any computer system is the Central processing Unit. Sometimes referred to simply as the central processor, but more commonly called processor, the CPU is where most calculations take place. In terms of computing power, the CPU is the most important element of a computer system. The CPU itself is an internal component of the computer. Modern CPUs are small and square and contain multiple metallic connectors or pins on the underside. The CPU is inserted directly into a CPU socket, pin side down, on the motherboard. Each motherboard will support only a specific type or range of CPU so you must check the motherboard manufacturer's specifications before attempting to replace or upgrade a CPU. Modern CPUs also have an attached heat sink and small fan that go directly on top of the CPU to help dissipate heat.
Storage devices:
Memory:
The computer has to store the program and data in an area where it can be used by computer’s processor. This area is known as the computer’s memory. Memory consists of computer chips that are capable of storing information.
RAM
Random-access memory is a form of computer data storage. Today it takes the form of integrated circuits that allow the stored data to be accessed in any order.
ROM
Read-only memory (usually known by its acronym, ROM) is a class of storage media used in computers and other electronic devices. Because data stored in ROM cannot be modified (at least not very quickly or easily), it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to require frequent updates).
INPUT DEVICES:
Input devices are used to enter or input data into the CPU. The main input device on computer is the keyboard. There is a wide range of other input devices including the mouse, scanner, communication devices and audio and video capture cards.
Keyboard: A computer keyboard is an important device that allows a computer user to enter characters (e.g. letters and numbers) into a computer. It is the main input device for the computer system. Keyboard is attached with the base unit through a wire which you plug in and start using keyboard.
Mouse:
A small hand controlled device connected to a PC that can be used in a GUI system to move a cursor around the screen. This cursor can be positioned on an icon and the programs associated with that icon can be run by clicking usually the left-hand button on the mouse. The mouse is connected to computer system in similar way as keyboard through a wire, to change basic settings for mouse Control Panel option can be use.
Scanner:
Devices that can read text or illustrations printed on paper and translate the information into a form the computer can use. A type of optical scanner that consists of a flat surface on which you lay documents to be scanned. Flatbed scanners are particularly effective for bound documents.
OUTPUT DEVICES:
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by information processing system.The main output device on a computer system is monitor, printer, speakers etc.
Monitor:
Most programs send the output from their calculation to a screen (apart from those such as payroll programs that send most of their output to the printer, with only a summary going to the screen. The screen is contained in a unit called the ‘monitor’ – sometimes also called the VDU (visual display unit).
There are two main types of monitors.
The CRT monitor, which is big and heavy. It is the oldest technology used by monitors. It looks like a television, but has a bigger resolution and often a higher frequency.
The LCD monitor, which is thin, flat, and lightweight. It is a newer technology than CRTs. The quality can be the same or even better than a CRT.
Monitor is attached with the system through a cable or port which plug in base unit to display on screen.
Printer:
Device that will produce a hard copy of the data that appears on the screen.
A printer is a piece of hardware for a computer. It is an instrument that must be connected to a computer which allows the users to print items on paper, such as letters and pictures. It can also work with Digital Cameras to print directly without the use of a Computer.
Laser printers produce high quality printed output very quickly and are generally more expensive than other types of printer. They are suitable for large volume printouts. Printers are usually connected with the computer with cable and you need to install software for printer to get the output.
Speakers:
The PC speaker is the most primitive sound system used in IBM PC compatibles. It was the only source of sound available to PC games before more technologically advanced sound cards such as AdLib and Sound Blaster were introduced as ISA plug-in cards in the late 1980s.
There is a wire to connect speakers with PC and gets the sound output.
INPUT / OUTPUT DEVICE:
Modem:
Modem is an input and output device Modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used over any means of transmitting analog signals, from driven diodes to radio.
Conclusion:
A system develops by connecting all its components in order with each other that’s how computer works as well. As in above we talked about its components and devices all these devices when attached with the main system unite ( base unit) in particular order runs system successfully.
The main components that comprise the PC are:
· The main system unit
· Storage devices
· Input devices
· Output devices
System Unit: A system unit, also known as a base unit, is the main body of a desktop computer, typically consisting of a metal or (rarely) plastic enclosure containing the motherboard, power supply, cooling fans, internal disk drives, and the memory modules and expansion cards that are plugged into the motherboard, such as video and network cards.
Inside each case there is a main electronic board, called the ‘motherboard’ that houses the CPU, Memory, etc
Motherboard
The main circuit board of a computer. Each motherboard is designed to handle a particular computing processor. The motherboard contains the connectors for attaching additional boards. Typically, the motherboard contains the CPU, BIOS, memory, mass storage interfaces, serial and parallel ports, expansion slots, and all the controllers required to control standard peripheral devices, such as the screen display, keyboard, and disk drive. All the power, data and addressing information is carried between components on the copper tracks etched on to the printed circuit board.
CPU (Central Processing Unit)
The main chip in any computer system is the Central processing Unit. Sometimes referred to simply as the central processor, but more commonly called processor, the CPU is where most calculations take place. In terms of computing power, the CPU is the most important element of a computer system. The CPU itself is an internal component of the computer. Modern CPUs are small and square and contain multiple metallic connectors or pins on the underside. The CPU is inserted directly into a CPU socket, pin side down, on the motherboard. Each motherboard will support only a specific type or range of CPU so you must check the motherboard manufacturer's specifications before attempting to replace or upgrade a CPU. Modern CPUs also have an attached heat sink and small fan that go directly on top of the CPU to help dissipate heat.
Storage devices:
Memory:
The computer has to store the program and data in an area where it can be used by computer’s processor. This area is known as the computer’s memory. Memory consists of computer chips that are capable of storing information.
RAM
Random-access memory is a form of computer data storage. Today it takes the form of integrated circuits that allow the stored data to be accessed in any order.
ROM
Read-only memory (usually known by its acronym, ROM) is a class of storage media used in computers and other electronic devices. Because data stored in ROM cannot be modified (at least not very quickly or easily), it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to require frequent updates).
INPUT DEVICES:
Input devices are used to enter or input data into the CPU. The main input device on computer is the keyboard. There is a wide range of other input devices including the mouse, scanner, communication devices and audio and video capture cards.
Keyboard: A computer keyboard is an important device that allows a computer user to enter characters (e.g. letters and numbers) into a computer. It is the main input device for the computer system. Keyboard is attached with the base unit through a wire which you plug in and start using keyboard.
Mouse:
A small hand controlled device connected to a PC that can be used in a GUI system to move a cursor around the screen. This cursor can be positioned on an icon and the programs associated with that icon can be run by clicking usually the left-hand button on the mouse. The mouse is connected to computer system in similar way as keyboard through a wire, to change basic settings for mouse Control Panel option can be use.
Scanner:
Devices that can read text or illustrations printed on paper and translate the information into a form the computer can use. A type of optical scanner that consists of a flat surface on which you lay documents to be scanned. Flatbed scanners are particularly effective for bound documents.
OUTPUT DEVICES:
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by information processing system.The main output device on a computer system is monitor, printer, speakers etc.
Monitor:
Most programs send the output from their calculation to a screen (apart from those such as payroll programs that send most of their output to the printer, with only a summary going to the screen. The screen is contained in a unit called the ‘monitor’ – sometimes also called the VDU (visual display unit).
There are two main types of monitors.
The CRT monitor, which is big and heavy. It is the oldest technology used by monitors. It looks like a television, but has a bigger resolution and often a higher frequency.
The LCD monitor, which is thin, flat, and lightweight. It is a newer technology than CRTs. The quality can be the same or even better than a CRT.
Monitor is attached with the system through a cable or port which plug in base unit to display on screen.
Printer:
Device that will produce a hard copy of the data that appears on the screen.
A printer is a piece of hardware for a computer. It is an instrument that must be connected to a computer which allows the users to print items on paper, such as letters and pictures. It can also work with Digital Cameras to print directly without the use of a Computer.
Laser printers produce high quality printed output very quickly and are generally more expensive than other types of printer. They are suitable for large volume printouts. Printers are usually connected with the computer with cable and you need to install software for printer to get the output.
Speakers:
The PC speaker is the most primitive sound system used in IBM PC compatibles. It was the only source of sound available to PC games before more technologically advanced sound cards such as AdLib and Sound Blaster were introduced as ISA plug-in cards in the late 1980s.
There is a wire to connect speakers with PC and gets the sound output.
INPUT / OUTPUT DEVICE:
Modem:
Modem is an input and output device Modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used over any means of transmitting analog signals, from driven diodes to radio.
Conclusion:
A system develops by connecting all its components in order with each other that’s how computer works as well. As in above we talked about its components and devices all these devices when attached with the main system unite ( base unit) in particular order runs system successfully.
Installing a DVD rewrite.
A) Install and configure a DVD rewrite drive supplied.
CD-ROM is available in either internal or external models. Before you install DVD ROM, You have to shut down Computer and unplug the power supply cable from back of your computer
If you not unplug a power supply cable from computer otherwise you could get electric shock.
Than unplug the rest of the wires from the back of the computer.
Unscrew all screw from the back of the components base, than open the base of the cover. Every drive has specific area to locate. Put down the new drive on the appropriate area than secure the drive to the casing with screws provided
If you fitted screw with drive to base than its holds a drive in specific location. The CD drive contains three ports witch is the IDE port, the power port and audio port.
CD-ROM is available in either internal or external models. Before you install DVD ROM, You have to shut down Computer and unplug the power supply cable from back of your computer
If you not unplug a power supply cable from computer otherwise you could get electric shock.
Than unplug the rest of the wires from the back of the computer.
Unscrew all screw from the back of the components base, than open the base of the cover. Every drive has specific area to locate. Put down the new drive on the appropriate area than secure the drive to the casing with screws provided
If you fitted screw with drive to base than its holds a drive in specific location. The CD drive contains three ports witch is the IDE port, the power port and audio port.
Protection
Utility software (also known as service program, service routine, tool, or utility routine) is a type of computer software. It is specifically designed to help manage and tune the computer hardware, operating system or application software
Virus Protection
The term "virus" is used to describe various types of malicious software that can affect your computer. Viruses work in different ways and have varied effects, but almost all can destroy data or prevent your computer from working properly. Some are merely an inconvenience; others will destroy particular files types or even erase your entire hard drive. Viruses can be written for any operating system, but most are written for and affect the many versions of Microsoft Windows. While viruses used to be passed predominantly from user to user via floppy disks, the most common method of receiving viruses these days is from an email attachment. The only attachments that are potentially harmful are executable files (.exe, .com, .pif, and .bat files), certain scripts (including .vbs and java scripts), and documents that allow macros to be run (generally Microsoft Word and Excel files, .doc and .xls respectively).Because new viruses are created and distributed daily, virus protection programs rely on frequent updates (called definition or DAT files) to remain effective. If your computer is infected with a virus and you do not have anti-virus software installed or do not have a recent update, you may not be able to install or update the software. In such cases, more specialized virus recovery programs will be necessary to repair the damage.
Firewall
A firewall is a system that secures a network, shielding it from access by unauthorized users. Firewalls can be implemented in software, hardware or a combination of both. When your computer gets an unsolicited request, Firewall blocks the connection. If you run a program such as an instant messaging program or a multiplayer network game that needs to receive information from the Internet or a network, the firewall asks if you want to block or unblock (allow) the connection. You should see a window like the one below. Firewall is a critical first line of defence to protect your computer against many types of malicious software. It helps block computer viruses and worms from reaching your computer.
It can stop many kinds of malware before they can infect your computer or other computers on your network. It helps in protecting other operating system resources if they behave in unexpected ways-a common indicator of the presence of malware. For example, if a component of windows that is designed to send network messages over a given port on your PC tries to send messages by way of a different port due to an attack; firewall can protect the malware from spreading to other users.
Virus Protection
The term "virus" is used to describe various types of malicious software that can affect your computer. Viruses work in different ways and have varied effects, but almost all can destroy data or prevent your computer from working properly. Some are merely an inconvenience; others will destroy particular files types or even erase your entire hard drive. Viruses can be written for any operating system, but most are written for and affect the many versions of Microsoft Windows. While viruses used to be passed predominantly from user to user via floppy disks, the most common method of receiving viruses these days is from an email attachment. The only attachments that are potentially harmful are executable files (.exe, .com, .pif, and .bat files), certain scripts (including .vbs and java scripts), and documents that allow macros to be run (generally Microsoft Word and Excel files, .doc and .xls respectively).Because new viruses are created and distributed daily, virus protection programs rely on frequent updates (called definition or DAT files) to remain effective. If your computer is infected with a virus and you do not have anti-virus software installed or do not have a recent update, you may not be able to install or update the software. In such cases, more specialized virus recovery programs will be necessary to repair the damage.
Firewall
A firewall is a system that secures a network, shielding it from access by unauthorized users. Firewalls can be implemented in software, hardware or a combination of both. When your computer gets an unsolicited request, Firewall blocks the connection. If you run a program such as an instant messaging program or a multiplayer network game that needs to receive information from the Internet or a network, the firewall asks if you want to block or unblock (allow) the connection. You should see a window like the one below. Firewall is a critical first line of defence to protect your computer against many types of malicious software. It helps block computer viruses and worms from reaching your computer.
It can stop many kinds of malware before they can infect your computer or other computers on your network. It helps in protecting other operating system resources if they behave in unexpected ways-a common indicator of the presence of malware. For example, if a component of windows that is designed to send network messages over a given port on your PC tries to send messages by way of a different port due to an attack; firewall can protect the malware from spreading to other users.
Software Utilities
C: Describe the range of utility software.
Utility Software:
Utility software (also known as service program, service routine, tool, or utility routine) is a type of computer software. It is specifically designed to help manage and tune the computer hardware, operating system or application software, and perform a single task or a small range of tasks; as opposed to application software which tend to be software suites. Utility software has long been integrated into most major operating systems.
Disk defragmenters. Examples include a disk defragmenter which can detect computer files whose contents have been not stored on the hard disk in disjointed fragments, and move the fragments together to increase efficiency; a disk checker can scan the contents of a hard disk to find files or areas that are corrupted in some way, or were not correctly saved, and eliminate them for a more efficiently operating hard drive; a disk cleaner can find files that unnecessary to computer operation, or take up considerable amounts of space. Disk cleaner helps the user to decide what to delete when their hard disk is full.
Firewall is an integrated collection of security measures designed to prevent unauthorized electronic access to a networked computer system. It is also a device or set of devices configured to permit, deny, encrypt, decrypt, or proxy all computer traffic between different security domains based upon a set of rules and other criteria.
System profilers: A system profiler can provide detailed information about the software installed and hardware attached to the computer. Backup software can make a copy of all information stored on a computer, and restore either the entire system (e.g. in an event of disk failure) or selected files (e.g. in an event of accidental deletion). Disk compression software can transparently compress the contents of the hard disk, in order to fit more information to the drive.
System Profiler is software utility that has been bundled with Mac OS since Mac OS 7.6 .It compiles technical information on all of the installed hardware, devices, drivers, applications, system settings, system software programs and kernel extensions installed on the host computer. This information is used to diagnose problems. System Profiler can be extremely useful if attempting to diagnose a hardware problem. It has support for scripting automation through AppleScript and some limited support in Automator.
Virus Scanners: A virus scanner is a program which examines all files in specified locations, the contents of memory, the operating system, the unexpected program behavior, and anywhere else relevant with the intention of identifying and removing any malware.
System Utilities - Utility programs that provide a convenient method of performing routine data management tasks, such as deleting, renaming, cataloging, uncataloging, moving, copying, merging, generating and modifying data sets, particularly used on mainframe computers.
Utility Software:
Utility software (also known as service program, service routine, tool, or utility routine) is a type of computer software. It is specifically designed to help manage and tune the computer hardware, operating system or application software, and perform a single task or a small range of tasks; as opposed to application software which tend to be software suites. Utility software has long been integrated into most major operating systems.
Disk defragmenters. Examples include a disk defragmenter which can detect computer files whose contents have been not stored on the hard disk in disjointed fragments, and move the fragments together to increase efficiency; a disk checker can scan the contents of a hard disk to find files or areas that are corrupted in some way, or were not correctly saved, and eliminate them for a more efficiently operating hard drive; a disk cleaner can find files that unnecessary to computer operation, or take up considerable amounts of space. Disk cleaner helps the user to decide what to delete when their hard disk is full.
Firewall is an integrated collection of security measures designed to prevent unauthorized electronic access to a networked computer system. It is also a device or set of devices configured to permit, deny, encrypt, decrypt, or proxy all computer traffic between different security domains based upon a set of rules and other criteria.
System profilers: A system profiler can provide detailed information about the software installed and hardware attached to the computer. Backup software can make a copy of all information stored on a computer, and restore either the entire system (e.g. in an event of disk failure) or selected files (e.g. in an event of accidental deletion). Disk compression software can transparently compress the contents of the hard disk, in order to fit more information to the drive.
System Profiler is software utility that has been bundled with Mac OS since Mac OS 7.6 .It compiles technical information on all of the installed hardware, devices, drivers, applications, system settings, system software programs and kernel extensions installed on the host computer. This information is used to diagnose problems. System Profiler can be extremely useful if attempting to diagnose a hardware problem. It has support for scripting automation through AppleScript and some limited support in Automator.
Virus Scanners: A virus scanner is a program which examines all files in specified locations, the contents of memory, the operating system, the unexpected program behavior, and anywhere else relevant with the intention of identifying and removing any malware.
System Utilities - Utility programs that provide a convenient method of performing routine data management tasks, such as deleting, renaming, cataloging, uncataloging, moving, copying, merging, generating and modifying data sets, particularly used on mainframe computers.
Computer System
B: Explain the effect of these activities on the performance of the computer system; indicate why they are undertaken and what benefits they bring to the system.
Installing a firewall on computer affects beneficially on the system such as your computer increase the security that you’re PC and contents are being protected. This activity has been taken to monitor incoming and outgoing security alerts and the firewall company will record and track down an intrusion attempt depending on the severity.
Anti-virus software is a computer program designed to detect and respond to malicious software, such as viruses and worms but some time anti-virus software does not recognize the latest virus program. So, to secure the computer anti-virus needs to update. New viruses are developed everyday so in order to detect the latest malicious programs every Anti-virus Software needs to update to secure computer from new viruses. You can also organize full system schedule, which automatically updates and scans your system by your software at particular day and time which you scheduled.
Patches is a type of software which provides better security information to help users by protecting users against viruses and worms. Firewall is utility software which protects computer and users against hackers and authorized users. Defragmenter is a process which improves hard drive performances, it deletes all temporary files, junks files, dump files etc. therefore, when you run defragmenter it reduce the unnecessary data and allows storage to used more efficiently. Drive formatting makes computer system work faster than before.
Installing a firewall on computer affects beneficially on the system such as your computer increase the security that you’re PC and contents are being protected. This activity has been taken to monitor incoming and outgoing security alerts and the firewall company will record and track down an intrusion attempt depending on the severity.
Anti-virus software is a computer program designed to detect and respond to malicious software, such as viruses and worms but some time anti-virus software does not recognize the latest virus program. So, to secure the computer anti-virus needs to update. New viruses are developed everyday so in order to detect the latest malicious programs every Anti-virus Software needs to update to secure computer from new viruses. You can also organize full system schedule, which automatically updates and scans your system by your software at particular day and time which you scheduled.
Patches is a type of software which provides better security information to help users by protecting users against viruses and worms. Firewall is utility software which protects computer and users against hackers and authorized users. Defragmenter is a process which improves hard drive performances, it deletes all temporary files, junks files, dump files etc. therefore, when you run defragmenter it reduce the unnecessary data and allows storage to used more efficiently. Drive formatting makes computer system work faster than before.
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