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A shared variable x, initialized to zero, is operated on by four concurrent processes W, X, Y, Z as follows. Each of the processes W and X reads x from memory, increments by one, stores it to memory, and then terminates. Each of the processes Y and Z reads x from memory, decrements by two, stores it to memory, and then terminates. Each process before reading x invokes the P operation (i.e., wait) on a counting semaphore S and invokes the V operation (i.e., signal) on the semaphore S after storing x to memory. Semaphore S is initialized to two. What is the maximum possible value of x after all processes complete execution?
With regard to computer memory, which of the following statement(s) is/are TRUE?  (A) Cache memory is 'volatile' memory. (B) Magnetic memory is 'volatile' memory.  (C) Flash memory is 'volatile' memory. (D) RAM is 'volatile' memory. Choose the correct answer from the option given below:
You are the administrator of a SQL Server 2000 computer. The server contains a database named FinanceData that is used by a client/server application. Each employee has a SQL Server login that the application uses to access the server.Your company hires a new employee named Andrew. You create a SQL Server login named Andrew. You also create a database user named Andrew in the database and grant the database user full permissions in the database.Whenever Andrew runs the client/server application, he receives the following error message: "Invalid object name." Andrew also reports that he cannot access the database by using the application.You need to ensure that Andrew can use the application. Which Transact-SQL statement should you execute?
A certain computation generates two arrays a and b such that a[i]=f(i) for 0 ≤ i < n and b[i] = g (a[i] ) for 0 ≤ i < n. Suppose this computation is decomposed into two concurrent processes X and Y such that X computes the array a and Y computes the array b. The processes employ two binary semaphores R and S, both initialized to zero. The array a is shared by the two processes. The structures of the processes are shown below. Process X: private i; for (i=0; i
The question below is followed by three statements I, II and III. You have to determine whether the data given is sufficient for answering the question. You should use the data and your knowledge of mathematics to choose the best possible answer. How many runs Sachin scored against Kashmir? I. The difference between his score against Mumbai and against Delhi is equal to the difference between the score against Delhi and against Kashmir. II. The average run he scored against all three states Delhi, Kashmir and Mumbai is 100. III. He scored 25 runs more against Mumbai than Kashmir.
Oracle maintains a System Change Number (SCN) which is a database-wide value that is incremented by Oracle whenever database changes are made.
What should be written in the blank of the code for resizing elements in Responsive Web Design with Transitions
Code:body { background-image: url(fog.jpg); background-size: cover;background-repeat: no-repeat; color: #fff; font-family: Avenir, Arial, sans-serif;}h1 { font-family: 'Calluna Sans', Arial, sans-serif; text-align: center;font-size: 10rem; margin: 8rem auto;}h1 { font-family: 'Calluna Sans', Arial, sans-serif;text-align: center; font-size: 10rem; margin: 8rem auto; transition: 1s font-size linear;}______________ and (max-width: 1100px) {h1 { font-size: 8rem; }
Consider a process executing on an operating system that uses demand paging. The average time for a memory access in the system is M units if the corresponding memory page is available in memory, and D units if the memory access causes a page fault. It has been experimental measured that the average time taken for a memory access in the process is X units. Which one of the following is the correct expression for the page fault rate experienced by the process?
Assume a memory access to main memory on a cache "miss" takes 30 ns and a memory access to the cache (on a cache "hit") takes 3 ns. If 80% of the processor's memory requests results in a cache "hit", what is the average memory access time?
Which of the following statement about computer memory are true?  A. Secondary storage is non-volatile storage.  B. Video memory found in graphics cards is volatile memory.  C. Primary memory (RAM) is the fastest form of memory in a computer.  Choose the correct answer from the options given below: