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Define multi programming? Many operating systems are designed to enable the cpu to process a number of independent programs concurrently. This concept is known as multi progra
Functions for Message Passing: MPI processes don't share memory space and one process can't directly access other process's variables. Therefore they need some form of communi
Amdahl's law is suitable for applications where response time is critical. On the other hand, there are a lot of applications which need that accuracy of the resultant output shoul
Why floating point number more difficult to represent and process than integer? In floating point numbers we have to show any number in three fields sign, exponent and mantissa
A project having of a set of jobs and a set of precedences, where precedence (i; j) show that job j cannot begin before job i is completed. Let c i be the duration of job i. We wi
Question: a) Describe what is meant by a "bus". There are two types of bus, dedicated and multiplexed. Give a brief description of both types of buses. b) Briefly explain f
What is an I/O buffer? I/O buffer: One type of input-output requirement arises from devices which have a very high character density as disks and tapes. With these chara
Explain briefly how firewalls protect network. A firewall is simply a program or hardware device that filters the information coming by the Internet connection into your
Q. Define the Circular shifts ? Circular shifts ROTATE RIGHT andROTATE LEFT. Bits shifted out at one end of word are not lost as in a logical shift however are circulated back
Q. Show Synchronous mode for point-to-point message passing? Synchronous mode: Transmitting can be started whether or not matching receive has been started, but transmitting w
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