What is an operating system?

Correct Answer: No Windows NT is not so, because its not implemented in object oriented language and the data structures reside within one executive component and are not represented as objects and it does not support object oriented capabilities

Correct Answer: same as userid (UPG)

Explanation:

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel. By default, a Linux user falls under same as userid (UPG) group.

Correct Answer: A bootstrap is the process of starting up a computer It also refers to the program that initializes the operating system (OS) during start-up It referred to a bootstrap load button that was used to initiate a hardwired bootstrap program, or smaller program that executed a larger program such as the OS

Correct Answer: Cookies are small pieces of information that are stored in a browser It keeps track of user preference, like what sites are visited, what keywords are used, among others

Correct Answer: Stack Pointer Index Registers Accumulators General Purpose Registers

Correct Answer: - Process management - Main memory management - File management - I/O system management - Secondary storage management - Networking - Protection system - Command interpreter system

Correct Answer: Selects from among the processes in memory that are ready to execute, and allocates the CPU to one of them CPU scheduling decisions may take place when a process: 1Switches from running to waiting state 2Switches from running to ready state 3Switches from waiting to ready 4Terminates Scheduling under 1 and 4 is non-preemptive All other scheduling is preemptive

Correct Answer: We encounter cycle stealing in the context of Direct Memory Access (DMA) Either the DMA controller can use the data bus when the CPU does not need it, or it may force the CPU to temporarily suspend operation The latter technique is called cycle stealing Note that cycle stealing can be done only at specific break points in an instruction cycle

Correct Answer: The `fork()? used to create a new process from an existing process The new process is called the child process, and the existing process is called the parent We can tell which is which by checking the return value from `fork()? The parent gets the child?s pid returned to him, but the child gets 0 returned to him

Correct Answer: Getting the value of an environment variable is done by using `getenv()? Setting the value of an environment variable is done by using `putenv()?