There are only four scenarios in which a deadlock may occur.
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There are only four scenarios in which a deadlock may occur.
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- Check Schedulability With LocksData: Periodic program P with locks, WCET estimates Ci for τi and Ci l,k for lock block Bi l,kResult: P schedulable or not; if schedulable, WCRT estimates for each taskPlease answer thisDescription: There are 5 philosophers sitting around a table and try to eat from the center of the table. 5 chopsticks also lay on the table. Let us call the 5 philosophers in clockwise P1, P2, ...P5. There also 5 chopsticks clockwise S1, S2, ..., S5 on the table. There are only one chopstick between every two philosophers. Every right hand chopstick will have the same index as the philosopher. For example, on the right hand side of P1, the chopstick is called S1. And every left hand side chopstick number is 1+number of the philosopher. A philosopher spend random time to think, then he feel hungry and try to eat. The middle dish can provide enough food for everyone at the same time. But a philosopher only can start to eat when he picked up two chopsticks from left hand side and right hand side to form a pair of chopsticks. If a philosopher take one chopsticks, he will try to fight with neighbours to get another one, and never back off to put down the one in his hand. Once the…
- In order for there to be a stalemate, there are four requirements that need to be fulfilled.Rutger University offers classes which visitors to the university can attend only if they are registered for the classes. Registration for the classes requires paying a nominal fee to the bursar, and you need account. The verification of visitors' registration is required in order for a visitor to attend a class, and this verification is done by a system administrator who is also required to log into the system. The verification is done through logging into the Rutgers registration system. If a visitor tries to log in to the system without being registered, an error message will be displayed by the system. Only a System Administrator will be able to create an account for a user of the system. The system administrator is also responsible for resetting login credentials (username and password) To get credit for the course, a participant must take a final exam which is set by a professor and uploaded to the system. The final exam when submitted by the student is reviewed by the professor…A chest of drawers, also called a dresser or a bureau, is a type of cabinet that has multiple parallel, horizontal drawers generally stacked one above another (See Figure 1). Each drawer has a lock to secure any property inside, but sometimes a drawer may not be secure even when it is locked. For instance, imagine a scenario where the second drawer from the top is locked, but the top drawer is not. In such a case, a burglar can access the second drawer by opening the top drawer and gaining access to the property inside the second drawer. Given the number of drawers, n, and the number of secure drawers, k. You can assume that nk. Write an O (nk) algorithm to find a number of ways to ensure that exactly k drawers are secure. For example, the number of drawers n = 6, and number of secure drawers k = 4. The output is 6 (ULLLLL, LULLLL, LLULLL, LLLULL, LLLLUL, and LLLLUU). FIGURE 1. Chest of Drawers
- Computer Science Investing in stocks is a way to create assets that are supposed to provide financial security over time. In solving this problem, we assume that an investor buys several shares of stock at a certain price. These shares are going to be sold later on for a different price. Obviously, if the selling price is higher than the acquisition price, the investor makes a profit, registering capital gain. If the shares are sold at a lower price, the investor has a loss, which marks a negative capital gain. This whole process is done over a period of time, and you are required to create a scenario for buying and selling shares. The assumption is that the investor sells shares in the order in which they were purchased. The goal is to calculate the capital gain over time. Suppose that you buy n shares of stock or mutual fund for d dollars each. Later, you sell some of these shares. If the sale price exceeds the purchase price, you have made a profit—a capital gain. On the other…Given the following scenario for a bank system: Āssume that there is one teller in bank "A". The bank has the following details: / One teller. / 10 waiting seats. When the customer arrives, he needs to use one of the waiting seats for roughly 10 minutes. When the teller starts serving the customer, he needs to authenticate the customer using his ID and then he will be able to perform the required transactions, which include money transfer (10 minutes), deposit (5 minutes), withdraw (5 minutes). After that the customer account will be updated. If the update is successfully completed, the customer can leave the bank. You are required to provide an example of the following: Entity: > Event: > Activity: Delay: System: In this bank system, what is your suggested discipline to be fair with all customers?Consider a computer system with three users: Alice, Bob, and Cindy. Alice owns file X, and Bob and Cindy can read it. Bob owns file Y, and Cindy can read and write the file Y, but Alice can only read it. Cindy owns file Z, but neither Alice nor Bob can read or write it. If a user owns a file, he/she can also execute the file. Create the ACM (access control matrix) of the system Show the ACL and CL of the ACM Now Cindy allows Alice to read Z, Alice removes Bob's ability to read X, and Bob removes all the rights of Alice and Cindy to Y. Show the ACM after these changes.
- what's the pseudo code for this question?Code requirements: A robot is positioned on an integral point in a two-dimensional coordinate grid (xr, yr). There is a treasure that has been placed at a point in the same grid at (xt, yt). All x’s and y’s will be integral values. The robot can move up (North), down (South), left (West), or right (East). Commands can be given to the robot to move one position in one of the four direction. That is, “E” moves a robot one slot East (to the right) so if the robot was on position (3, 4), it would now be on (4, 4). The command N would move the robot one position north so a robot at position (4, 4) would be at (4, 5). Because the robot cannot move diagonally, the shortest distance between a robot at (xr, yr) and a treasure at (xt, yt) is | xr – xt | + | yr - yt | = ShortestPossibleDistance Write a recursive program which determines all the unique shortest possible paths from the robot to the treasure with the following stipulation: The robot may never move in the same direction more than…The Tower of Hanoi Problem Tower of Hanoi is a mathematical game consisting of three pegs (P1, P2 and P3) and a stack of disks of different diameters. Disks can slide onto any peg. The game starts with all disks stacked on P1 and ends at the point where all disks stacked on P3. The game player is required to move all disks from P1 to P3 using P2 as a buffer. Three rules must be followed when playing the game (1) Only one disk may be moved at a time. (2) Each move involves taking a disk on the top of a peg and place it on the top of another peg. (3) A disk of a larger diameter should never be placed on top of a disk of a smaller diameter. The diagrams below demonstrate the starting state and goal state of the game with 5 disks. starting sate p1 to goal state p3 Requirements In this assignment, students are required to solve the Tower of Hanoi (with five disks) using state space search algorithms implemented in Python. Two state space search algorithms: (1) a blind search (depth-first…
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