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At the end of this lecture, and into the next lecture, we will discuss the last major type of logical error that can occurwhen programming with threads. A deadlock occurswhen two things (threads, processes, etc) wait on each other. One example of a deadlock is known as the Dining Philosophers problem. In this abstract problem, philosophers alternate between thinking and eating, and the dining table has as many forks as philosophers. Each philosopher needs two forks to eat with. The problem which can occur is if each philosopher gets one fork, and will not let go of it. Then no philosopher can get two forks, which he or she needs in order to eat. In this situation, we have a deadlock, and the philosophers will starve!
What is paging? Name the different paging techniques. Paging is a memory management method that permits the physical-address space of a process to be noncontiguous. Paging evad
Fault tolerance : Machine failures, Communication faults, storage device crashes, and decays of storage media must be tolerated by the system to some extent. A fault tolerant sy
Compare 2 different operating systems.
Ask question #Minimum 100 words accDefine Hashing System. Describe the Hashed page table with example and mapping figure.
Concept of Reentrancy It is a useful, memory-saving method for multiprogrammed timesharing machines. A Reentrant method is one in which multiple clients can share a singl
What is the MFD? UFD? How are they related? MFD is master-file directory, which points to the UFDs. UFD is user-file directory, which points to each of user's files.
WHAT IS ACYCLIC GRAPH DIRECTORY
___paging fecthces a page only when needed
Differentiate tightly coupled systems and loosely coupled systems? Loosely coupled systems:- Every processor has its own local memory Every processor can communicate
What is contiguous allocation? Allocation of a group of consecutive sectors for a one file.
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