What resources are used when a thread is created? How do they differ from those when a process is created?

Correct Answer: C2 level security provides for: 1Discretionary Access Control 2Identification and Authentication 3Auditing 4Resource reuse

Correct Answer: Time taken for switching from one process to other is pure over head Because the system does no useful work while switching So one of the solutions is to go for threading when ever possible

Correct Answer: Page swapping or page replacements are called page cannibalizing

Correct Answer: - Normal completion - Time limit exceeded - Memory unavailable - Bounds violation - Protection error - Arithmetic error - Time overrun - I/O failure - Invalid instruction - Privileged instruction - Data misuse - Operator or OS intervention - Parent termination

Correct Answer: Also called FIFO anomaly Usually, on increasing the number of frames allocated to a process virtual memory, the process execution is faster, because fewer page faults occur Sometimes, the reverse happens, ie, the execution time increases even when more frames are allocated to the process This is Belady's Anomaly This is true for certain page reference patterns

Correct Answer: Commonly, the different attributes for a file structure are naming,size, identifier, a level of protection, supported file types and location for the files

Correct Answer: Graphical

Correct Answer: In message passing, it is the condition in which, both, the sender and receiver are blocked until the message is delivered

Correct Answer: User data: Modifiable part of user space May include program data, user stack area, and programs that may be modified User program: The instructions to be executed System Stack: Each process has one or more LIFO stacks associated with it Used to store parameters and calling addresses for procedure and system calls Process control Block (PCB): Info needed by the OS to control processes

Correct Answer: Seek time is the time required to move the disk arm to the required track Rotational delay or latency is the time it takes for the beginning of the required sector to reach the head Sum of seek time (if any) and latency is the access time Time taken to actually transfer a span of data is transfer time