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What do you mean by semaphore?
Semaphore: A synchronization variable that acquires on positive integer values. Invented by the Dijkstra
The names arrive from the Dutch, verhogen (increment) and proberen (test). Semaphores are elegant and easy and permit the solution of many interesting problems. They do many more than just mutual exclusion.
Explain the Statements Present in Assembly Language An assembly program consists of subsequent three types of statements: a. Imperative statements: this point out an action
Q. Is there any way to execute truly stable storage? Describe your answer. Answer: Truly steady storage would never lose data. The fundamental technique for steady storage is
why we say" OS is a resource allocator" and “OS is a control program"?
In a multiprogramming and time sharing environment several users share the system simultaneously .what are two such problems?
Is disk scheduling, other than FCFS scheduling, useful in a single-user environment? Explain your answer. In a single-user environment, the I/O queue usually is blank. Requests
Convert the following from hex to binary and draw it on the memory map. RAM = 0000 -> 00FF EPROM = FF00 -> FFFF Answer: 0000 0000 0000 0000 (0) RAM sta
Some people write custom memory allocators to meet their speci?c needs. Although this is not needed for most of the applications, it is also not uncommon. The goal, of course, is t
How is memory management done using linked lists? Each one node of the l list will have 4 fields as follows 1-this tells whether it s a hole or a process 2-starting ad
Explain what ISAM is. Indexed sequential access method. The file is stored in sorted order. ISAM has a master index file, indicating in what part of another index file the key
List the four steps that are essential to run a program on a completely dedicated machine. a. Reserve machine time. b. Manually load program into memory. c. Load starting
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