Functions of an OS Platform-(03) :: essays research papers

Functions of an operating(a) establishment operating(a) Systems is a data processor programme that controls the operation of the ironwargon of a calculator and the execution of programs. The primary functions of an direct system include1) Managing and controlling the computer hardware of the computer, e.g., drivers2) Interfacing between hardware and software, i.e. how programs and applications expend hardware keyboard, mo call, monitor. 3) Managing memory, i.e., multitasking, multiprocessing and threads4) Managing and capital punishment applications5) Diagnosing problems with software and hardware6) Managing Storage Devices and Files, e.g., NTFS and Netware file system 7) Providing a User Interface redundant Functions of a Network Operating SystemWhere multiple hosts share the workload and resources, save each host executes its make programs1) Connecting to the Network, e.g., network interface witticism drivers, communication protocols, and leaf node services.2) Enablin g outback(a) drug users to access and share resources, and user interfaces to use various share services, e.g., utilities, weather vane access, SMTP.3) render additional credential to access overlap resources, i.e., license (logon) and authorization (resources) services. 4) Provide applications for network use, e.g., Web, SMTP, and DHCP servers. 5) Provide network diagnostics utilities. Types of Network Operating SystemsPeer-to-Peer or Workgroup Model whatever computer can be a server or a client, or both. Examples of these NOS include Microsoft Networking and Windows 2k Member servers The credential system is decentralized, and is stored in the topical anesthetic registry. Practical for networks up 5 to 10 computers with limited sacramental manduction and base credential overtopments. Every server maintains its give birth security system. this means that you moldiness have a password on each server. Peer-to-Peer or WorkgroupsAdvantagesDisadvantagesEasy-to-share resou rcesNo centralized control over resourcesResources are distributed across all computersNo centralized account management weeny administrative overhead No centralized administrationSimple to digitNo centralized security systemEasy to implement wasteful for more than 20 computersConvienent for grim groups in close proximity pledge must be configured manuallyLess expensive or free software, does not require a centralized serverincrease training to educate users to use their computer as both a client and a server. public ( node/Server) Model The designation of one computer to centralize the administration of shared resources and security. It is generally recommended that a computer would be only used as either as a client or a server, but not both. For example, share files will be stored on the server. Windows NT/2K domain controllers, ready directory and Netware are examples of the client Server model. Client/Server or sphere ModelAdvantagesDisadvantagesCentralized resource shari ngSignificant administrative labor and overheadFunctions of an OS Platform-(03) essays research papers Functions of an Operating System Operating Systems is a computer program that controls the operation of the hardware of a computer and the execution of programs. The primary functions of an operating system include1) Managing and controlling the hardware of the computer, e.g., drivers2) Interfacing between hardware and software, i.e. how programs and applications use hardware keyboard, mouse, monitor. 3) Managing memory, i.e., multitasking, multiprocessing and threads4) Managing and executing applications5) Diagnosing problems with software and hardware6) Managing Storage Devices and Files, e.g., NTFS and Netware file system 7) Providing a User InterfaceAdditional Functions of a Network Operating SystemWhere multiple hosts share the workload and resources, but each host executes its own programs1) Connecting to the Network, e.g., network interface card drivers, communication p rotocols, and client services.2) Enabling remote users to access and share resources, and user interfaces to use various share services, e.g., utilities, web access, SMTP.3) Provide additional security to access shared resources, i.e., authorization (logon) and authorization (resources) services. 4) Provide applications for network use, e.g., Web, SMTP, and DHCP servers. 5) Provide network diagnostics utilities. Types of Network Operating SystemsPeer-to-Peer or Workgroup Model Any computer can be a server or a client, or both. Examples of these NOS include Microsoft Networking and Windows 2k Member servers The security system is decentralized, and is stored in the local registry. Practical for networks up 5 to 10 computers with limited sharing and low security requirements. Every server maintains its own security system. this means that you must have a password on each server. Peer-to-Peer or WorkgroupsAdvantagesDisadvantagesEasy-to-share resourcesNo centralized control over resourc esResources are distributed across all computersNo centralized account managementLittle administrative overhead No centralized administrationSimple to designNo centralized security systemEasy to implement Inefficient for more than 20 computersConvienent for small groups in close proximitySecurity must be configured manuallyLess expensive or free software, does not require a centralized serverIncreased training to educate users to use their computer as both a client and a server.Domain (Client/Server) Model The designation of one computer to centralize the administration of shared resources and security. It is generally recommended that a computer would be only used as either as a client or a server, but not both. For example, share files will be stored on the server. Windows NT/2K domain controllers, Active directory and Netware are examples of the client Server model. Client/Server or Domain ModelAdvantagesDisadvantagesCentralized resource sharingSignificant administrative effort a nd overhead