Using Dijkstra’s counting semaphores, modify the following pseudocode so that operations on shared variables are atomic. Keep your critical regions as small as possible. main() { int x; for (j=0; j < NumberThreads; j++) { start new thread executing foobar(&x); } } foobar(int *x) { y = 2 * (*x); print y; z = 2 * y; *x = *x / 2; }

The reset circuit used on the four 3-bit counters analyzed in this activity reset the counts to zero (000). it makes sense for the up-counters to start at zero (000), but the down-counters should start at seven (111). what would you need to change so that the 3-bit binary down counter with j/k flip-flops you just created would reset to seven (111)?

Is an attack that relies on guessing the isns of tcp packets

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.