System Call
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Process control
System calls provide the interface between a running program and the operating systeml Generally available as assembly-language instructionsl Languages defined to replace assembly language for systems programming allow system calls to be made directly (e.g., C, C++)Three general methods are used to pass parametersbetween a running program and the operating systeml Pass parameters in registersl Store the parameters in a table in memory, and the table address is passed as a parameter in a registerl Push (store) the parameters onto the stack by the program, and pop off the stack by operating system
File Management
A file is a collection of related information defined by its creator. Commonly, files represent programs (both source and object forms) and data.-The operating system is responsible for the following activities in connections with file management:1.File creation and deletion.2.Directory creation and deletion.3.Support of primitives for manipulating files and directories.4.Mapping files onto secondary storage.5.File backup on stable (nonvolatile) storage media.
Device Management
is a set of technologies, protocols and standards used to allow the remote management of mobile devices, often involving updates of firmware over the air (FOTA). The network operator, handset OEM or in some cases even the end-user (usually via a web portal) can use Device Management, also known as Mobile Device Management, or MDM, to update the handset firmware/OS, install applications and fix bugs, all over the air. Thus, large numbers of devices can be managed with single commands and the end-user is freed from the requirement to take the phone to a shop or service center to refresh or update.
For companies, a Device Management system means better control and safety as well as increased efficiency, decreasing the possibility for device downtime. As the number of smart devices increases in many companies today, there is a demand for managing, controlling and updating these devices in an effective way. As mobile devices have become true computers over the years, they also force organizations to manage them properly. Without proper management and security policies, mobile devices pose threat to security: they contain lots of information, while they may easily get into wrong hands. Normally an employee would need to visit the IT / Telecom department in order to do an update on the device. With a Device Management system, that is no longer the issue. Updates can easily be done "over the air". The content on a lost or stolen device can also easily be removed by "wipe" operations. In that way sensitive documents on a lost or a stolen device do not arrive in the hands of others.
Information Mainhtainance
Get time and date, set time and date, get process attribute etc.
System calls provide the interface between a running program and the operating systeml Generally available as assembly-language instructionsl Languages defined to replace assembly language for systems programming allow system calls to be made directly (e.g., C, C++)Three general methods are used to pass parametersbetween a running program and the operating systeml Pass parameters in registersl Store the parameters in a table in memory, and the table address is passed as a parameter in a registerl Push (store) the parameters onto the stack by the program, and pop off the stack by operating system
File Management
A file is a collection of related information defined by its creator. Commonly, files represent programs (both source and object forms) and data.-The operating system is responsible for the following activities in connections with file management:1.File creation and deletion.2.Directory creation and deletion.3.Support of primitives for manipulating files and directories.4.Mapping files onto secondary storage.5.File backup on stable (nonvolatile) storage media.
Device Management
is a set of technologies, protocols and standards used to allow the remote management of mobile devices, often involving updates of firmware over the air (FOTA). The network operator, handset OEM or in some cases even the end-user (usually via a web portal) can use Device Management, also known as Mobile Device Management, or MDM, to update the handset firmware/OS, install applications and fix bugs, all over the air. Thus, large numbers of devices can be managed with single commands and the end-user is freed from the requirement to take the phone to a shop or service center to refresh or update.
For companies, a Device Management system means better control and safety as well as increased efficiency, decreasing the possibility for device downtime. As the number of smart devices increases in many companies today, there is a demand for managing, controlling and updating these devices in an effective way. As mobile devices have become true computers over the years, they also force organizations to manage them properly. Without proper management and security policies, mobile devices pose threat to security: they contain lots of information, while they may easily get into wrong hands. Normally an employee would need to visit the IT / Telecom department in order to do an update on the device. With a Device Management system, that is no longer the issue. Updates can easily be done "over the air". The content on a lost or stolen device can also easily be removed by "wipe" operations. In that way sensitive documents on a lost or a stolen device do not arrive in the hands of others.
Information Mainhtainance
Get time and date, set time and date, get process attribute etc.
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