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Question:
(a) What are the main challenges for Mobile Computing?
(b) What is the ISM band and what is particular about this frequency band? Name two wireless technologies that make use of the ISM frequency band.
(c) Describe 5 effects that can disturb signal propagation.
(d) What is meant by digital modulation? Illustrate you answer with a diagram.
(e) How could you modify the basic phase shift keying modulation technique to improve efficiency?
Q. Describe the purpose of the open() and close() operations. Answer: The open() operation notifies the system that the named file is about to become active. The c
Load Sharing : Processes are not given to a particular processor. A global queue of threads is used to maintain. Each processor, when idle, picks a thread from this queue. Note th
How can a user program disturb the normal operation of the system? a) Issuing illegal I/O operation. b) By accessing memory locations within the OS itself. c) Refusing to
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
File allocation using I nodes. This method is used to decrease the size of the table in the above method. Every file will have an I-node list. Allow a file have 15 pointers a
what branch of goverment were the federal courts are?
Calculate the Average Waiting Time CPU burst time points out the time, the process needs the CPU. The subsequent are the set of processes with their respective CPU burst time (
Question: (a) (i) What is a microkernel? Describe the benefits of using microkernels. (ii) How does a microkernel-based operating system differ from a traditional operating
Explain the TlsGetValue (TLSindex) Function Executing this function will return the thread local storage data associated with this thread. The pointer returned will be the one
Briefly explain the process management in UNIX. UNIX makes use of the easy but powerful process facility that is visible to the user. UNIX follows the model in which the majori
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