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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 system?
(iii) Give examples of O.S that fall into the two above categories.
(b) (i) Many security researchers have assumed that criminals would focus their attacks on cryptanalysis. List at least 2 reasons why this is rarely true, explain their significance, and give an example that illustrates each.
(ii) Explain what is security policy and what are the corresponding mechanisms in the case of a multi-user operating system such as UNIX.
(c) (i) List the sequence of basic operations that make up a server process in the basic client-server model. (For the purposes of this question, you can ignore the need to establish a connection across a network, and assume clients are already connected to the server).
(ii) How does the client process implement the request/reply timing with this server process?
(d) What are the major issues that need to be addressed in designing a distributed operating system?
FIRST FIT ALGORITHM Scanning a list along with if a free hole is available with necessary space for the process to allocate it allocates the process in that space. The first s
Q. Presume that the following processes arrive for execution at the times indicated. Every process will run the listed amount of time. In responding the questions use non pre-empti
What is an effector process? The effector process is a method that verifies itself.The effector process exists in particular criteria.
What is Multiprogramming? Multiprogramming is the capability of am operating system to support multiple applications running concurrently. Multiprogramming simply means that an
Explain about paging? Answer: Paging is a memory-management scheme that permits the physical-address space of process to be noncontiguous. Paging avoids the considerable proble
Basic concepts When a process is to be changed in, the pager guesses which pages will be used before the process is changed out again. Instead of swapping in a entire process,
What is the use of boot block? For a computer to begin running when powered up or rebooted it requires having an initial program to run. This bootstrap program tends to be easy
Q. The Sun Ultra SPARC processor has numerous register sets that describe the actions of a context switch if the new context is previously loaded into one of the register sets. Wha
Q. What is the basic function of Assembler ? Input to an assembler is an assembly language program. Output is an object program and information which enables the loader to prep
Deadlock Avoidance It's a method to evade deadlock by careful resource scheduling. This approach to the deadlock problem foresees deadlock before it actually occurs. This a
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