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1. A database at a college is required to support the following requirements. Complete the information-level design for this set of requirements. Use your own experience to determine any constraints you need that are not stated in the problem. Represent the answer in DBDL.
a. For a department, store its number and name.
b. For an advisor, store his or her number and name and the number of the department to which he or she is assigned.
c. For a course, store its code and description (for example MTH110 or Algebra).
d. For a student, store his or her number and name. For each course the student has taken, store the course code, course description, and grade received. In addition, store the number and name of the student's advisor. Assume course description, and grade received. In addition, store the number and name of the student's advisor. Assume that an advisor may advise any number of students but that each student has just one advisor.
Intermediate Level Tasks : Below is a simple program. It creates 2 threads. The first thread keeps printing out X on the screen, and the second thread keeps printing out O on the screen.
How many page faults would occur under pure demand paging (all frames are initially empty), assuming four frames are available, under FIFO, LRU.
In different communications models, communication may take place using either "message passing" or "shared memory". Distinguish between "message passing" and "shared memory", illustrating your answer with a diagram Give three advantages of virt..
CPU with interrupt-driven I/O is busy servicing disk request. While CPU is midway through the disk-service routine, another I/O interrupt occurs. What occurs next?
Discuss an application that would benefit from the use of barrier synchronization
Consider a dynamic RAM that must be given a refresh cycle 64 times per ms. What percentage of the memory's total operating time must be given to refreshes?
Deadlock Avoidance and Scheduling
Using exactly one semaphore, create an algorithm which prevents deadlock. Do not be concerned about starvation and inefficiency.
Write down the three parts of Linux kernel version number, and which is least probable to change? What are "BogoMIPS", and what is their significance?
Suppose shared bank account exists between husband and wife and concurrently husband calls withdraw() function and wife calls deposit(). Explain how race condition is possible and what might be done to prevent race condition from occuring.
Write the start-up steps in Windows NT. Provide estimate for the capital investment needed in computer forensics for a 2,000,000 population.
Explain the following terms in relation to linear programming problems- (1) decision variables (2) objective function
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