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Subject: Operating Systems-PART3 Mon Aug 23, 2010 3:39 am
How many jobs can be run concurrently on MVT? 15 jobs
List out some reasons for process termination. 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.
What are the reasons for process suspension? swapping interactive user request timing parent process request
What is process migration? It is the transfer of sufficient amount of the state of process from one machine to the target machine
What is mutant? In Windows NT a mutant provides kernel mode or user mode mutual exclusion with the notion of ownership.
What is an idle thread? The special thread a dispatcher will execute when no ready thread is found.
What is FtDisk? It is a fault tolerance disk driver for Windows NT.
What are the possible threads a thread can have? Ready Standby Running Waiting Transition Terminated.
What are rings in Windows NT? Windows NT uses protection mechanism called rings provides by the process to implement separation between the user mode and kernel mode.
What is Executive in Windows NT? In Windows NT, executive refers to the operating system code that runs in kernel mode.
What are the sub-components of I/O manager in Windows NT? Network redirector/ Server Cache manager. File systems Network driver Device driver
What are DDks? Name an operating system that includes this feature. DDks are device driver kits, which are equivalent to SDKs for writing device drivers. Windows NT includes DDks.
What level of security does Windows NT meets? C2 level security.