Consider a system consisting of four processes and a single resource. The current state of the claim and allocation matrices are c-( ^-1) 3 2/ What is the minimum number of units of the resource needed to be available for this state to be safe?
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- A hostel warden states the following requirements for a hostel information system: Our hostel has 500 rooms and 4 messes. Currently there are 1000 students in all in 2-seated rooms. They eat in any one of he messes but can get a rebate if they inform and do not eat for at least 4 consecutive days. Besides normal menu, extra items are also given to students when they ask for it. Such extras are entered in an extras book. At the end of the month, a bill is prepared based on the normal daily rate and extras and given to student. Draw a logical DFD.Guests are arriving at a party at a rate of 12 per minute. Each guest will be checked in by a receptionist, served a drink by a bartender, and accompanied to his/her table by one usher. Both the receptionist and usher can serve 10 guests per minute, whereas the bartender takes 5 minutes to serve one guest. The is a non bottleneck resource and its utilization is bartender, 100% receptionist, 20% usher, 100% usher, 2%A company manufactures 3 products in 2 different factories. The cost of production and time required for production for each product varies depending on which factory produces it. The time and cost required for production of each product in each factory is provided in the tables in this worksheet. Demand for products 1, 2 and 3 are 200, 240 and 100 units, respectively. There are a total of 3,000 hours available in each factory. Additionally, at least 60% of the total units of Product 1 must be produced in Factory A, and at least 40% of of the total units of Product 2 must be produced in Factory B. Create a linear programming model and use the Solver add-in to determine the optimal production plan that will minimize total cost. Note: The cost is per unit not per hour. All demand must be met.
- Read the following scenario and answer the questions given bellow.• A car rental company has its offices in three major cites of the area. Acostumer once registered with the company, can avail its services from anynearby office. Every office keeps record of the vehicles, their drivers andrenting details. Salaries of administrative staff are controlled at a single sitewhile the drivers are paid (according to the services they provide) from their local office. Rates for famous tourism spots are fixed (with a slight difference for different vehicles), while other spots are charged according to the mileage covered. 1. Identify the entities involved in the database designed for thecompany.2. Draw GCS for the system.3. Give details of any of the relations replicated on more than one sitesConsider the case of a shop that sells CDs in cash. The CDs are of three types: Movie CDs, Software CDs and Music CDs. For each of the following CD types, the required attributes are:Movie CD: Movie Title, Year of Release, Lead Actor Name, CD price and CD quantitySoftware CD: Software Name, Edition, Year of Release, CD price and CD quantityMusic CD: Album Title, Year of Release, Number of Songs, Format, CD price and CD quantity. Write a java statement to declare a list (you may follow any) of type CD and instantiate usingHashSet to avoid duplicate entries. Does detecting the same entry requires any method overriding? Apply sorting on the year of release.Consider the case of a shop that sells CDs in cash. The CDs are of three types: Movie CDs, Software CDs and Music CDs. For each of the following CD types, the required attributes are:Movie CD: Movie Title, Year of Release, Lead Actor Name, CD price and CD quantitySoftware CD: Software Name, Edition, Year of Release, CD price and CD quantityMusic CD: Album Title, Year of Release, Number of Songs, Format, CD price and CD quantity All objects of the classes cannot change their state once they are instantiated. How will you implement this?
- Consider the case of a shop that sells CDs in cash. The CDs are of three types: Movie CDs, Software CDs and Music CDs. For each of the following CD types, the required attributes are:Movie CD: Movie Title, Year of Release, Lead Actor Name, CD price and CD quantitySoftware CD: Software Name, Edition, Year of Release, CD price and CD quantityMusic CD: Album Title, Year of Release, Number of Songs, Format, CD price and CD quantity. The variable of CDType can hold a fixed set of values that are Movie, Software and Music, what data type you recommend is suitable to store this information to ensure typesafety firmly. Declare and initialize the CDType variable.Students borrow books from the Library. The Library has more than one copy of each book, when students come to the library they can request a book to be issued. Staff check the library catalogue to see if the book is available and not on hold for another student. If the book is not on hold it is issued to the student for a period of 2 or 7 days. Student must return the book before due date otherwise they will have to pay fine to the library. Represent this situation of Library with an E-R diagram.Table 1. 4 processes arriving shown in Operating System Scheduling PDF for Shortest Job Next, non- preemptive Process Arrival Times Execution Times Service Times sequence Wait Times calculations PO 0 12 P1 21 9 P2 41 6 P3 6 3 Total wait time = ? Here the 4 processes of the PDF are repeated in Table 1, with arrival times changed to 0, 2, 4, and 6 respectively. Also, the execution times are changed to 12, 9, 6, and 3. You will be asked to fill table 1 with the numbers like the service times (when is each process serviced), the sequence of executions of these 4 processes in part (a) and part (b) below. Also, you will compute the total wait time. Note for FCFS, it is 1, 2, 3, 4 for P0, P1, P2, and P3; • for the SJN or Shortest Job Next with non-preemptive, PO is #1, P1 may not be #2; for SRT, or shortest remaining time, the preemptive version of SJN, PO is #1, but after 2 time units when P1 comes, P1 kicks out PO since its execution time is 4 < 9- 2 = 7; and P1 may be preempted by P2 later…
- An university has decided to grant loans for the students. For this the financial administrator has to check with the number of students apply for loan with "Manage Loan and Grants" view. Student can enroll themself and apply for loan. Financial administrator will check whether the students has cleared the tuition fees up to last year, if the student is applying loan for current year tuition fee and enrollment was done for courses like seminars, etc. Professor will be allotted for the course once students got enrolled for subject. The actors involved in the system are student, scheduler, financial administrator and professor. The packages that are linked in the system are manage loan and grants, manage fees, manage seminars, enrollment. Identify the dependencies between one element and the other by drawing a package diagram forQ3|II Produce a use case model for the following scenario: "The hotel housekeeping manager checks the requirement file once weekly to ensure that there are sufficient quantities of soaps, shampoos etc. Where necessary, an order is raised to be sent to the supplier. Copies of the orders are kept and used to check the supplier delivery notes and invoices when they are received. Occasionally the suppliers are unable to send the requested things and suggested alternatives. Once the requirements have been supplied the stock file is updated."Consider the following table as a snapshot of resources in a system: A (10 instances), B (5 instances), and C (7 instances). a) Write down the calculation steps to find a Safe/Unsafe state: b) Is this system in a safe state? If so, write the safe sequence. Allocation Max Available АВС АВС 332 Po P1 P2 P3 PA 010 753 200 322 302 902 211 222 002 433