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What are the deadlock prevention methodologies?
a. Necessitate that processes request all resources before starting - if cannot be granted don't run.
b. Processes only allowed requesting resources when they hold none.
c. If a resource request can't be granted to halt process and take away resources held. Give back and restart while all available simultaneously.
d. If a resource request can't be granted to take them away from some other process.
e. Offering a total ordering of resources and only grant requests if up along the order or release ones ahead in the order
1. Draw a schematic diagram of a CMOS inverter and explain its operation. 2. Draw schematic diagrams of CMOS NAND and NOR gates, and explain their operation. 3. Explain what
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What is protection of input output?
What is a buddy system? We are dividing the memory as powers of two therefore the division will be 2, 4, 8, 16, 32, 64, 128, 256...i.e. in powers of 2 as well as we are selecti
explain about oprating system services and topics briefly
Define the DosSleep(ms) Function used in the os/2 DosSleep() suspends the currently executing thread for some time interval specified in the ms parameter. If a value of 0 is
Question: a) What is an Input/Output module and what are the five categories their functions fall into? b) What is an Operating System? Briefly describe the two objectives
Internal file structure All disk I/O is performed in units of single block, and all blocks are the similar size. It is unlikely that the physical record size will exactly match
Q. Which of the subsequent instructions should be privileged? a) Read the clock b) Clear memory c) Set value of timer d) Issue a trap instruction e) Turn off interr
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
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