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- Let us consider the following process performed by an IT helpdesk that handles requests from clients. The clients are employees of a company. There are about 500 employees in total. A request may be an IT-related problem that a client has, or an access request (e.g. requesting rights to access a system). Requests need to be handled according to their type and their priority. There are three priority levels: “critical”, “urgent” or “normal”. The current process works as follows. A client calls the help desk or sends an e-mail in order to make a request. The help desk is staffed with five “Level-1” support staff who, typically, are junior people with less than 12 months experience, but are capable of resolving known problems and simple requests. The hourly cost of a Level-1 staff member is € 40. When the Level-1 employee does not know the resolution to a request, the request is for- warded to a more experienced “Level-2” support staff. There are three Level-2 staff mem- bers and their…Test a discount system in some e-shop. The system can send a loyalty card to a client and admit a discount according to the following rules: “No discount” is the default discount option. A non-registered user has 0% discount by definition. If a registered user spent more than $1000 in the previous shopping sessions, and there were 19 or less shopping sessions, admit 5% discount. If a registered user spent more than $1000 in the previous shopping sessions and there were at least 20 shopping sessions, admit 10% discount. A loyalty card is sent only to registered customers who spent more than $1000 or had at least 20 shopping sessions.Construct a decision table for the above business logic.One of the problems with the Internet email system is that sending forged emails is relatively straightforward, i.e., it is easy to send an email with a fake sender/from address. One solution to this problem would be for a domain’s mail servers to digitally sign any email originating from the domain. For this to be useful, the public key would need to be made available to clients to validate the signatures. It is proposed that the public keys of the mail servers will be verified and signed by a certification authority (same as SSL/TLS certificates) and distributed via a standardised URL for the domain, e.g., https://mybusiness.com/email.pubkey. (a) Explain how the client would obtain the public key and validate the email server’s digital signatures. (b) Discuss the problem of trusting the obtained public key and how this solution results in public keys that can/cannot be trusted. (c) Indicate whether you believe this approach could be used to prevent forged emails and explain why it…
- Given that you have submitted many requests to a server, each with its own id (or unique identification) and priority (or priority).Requests = [(id1, p1), (id2, p2), ……, (idn, pn)], where p1 > p2 > …. > pn. Provide the best algorithm or pseudocode for dealing with all of the requests.Appointment scheduling by an administrative staff: The below given is a scenario shows the process of patient appointment scheduling by an administrative staff.The staff login to the system, the system validates the credentials. The staff selects appointmentpage and select an appointment date. Add the patient ID and send for an appointment to thesystem. The system verifies the date and accepts or reject based on the availability of the bookingslot on that particular date. If the booking is available, the database will be updated and sendconfirmation message to the staff, or sends an error message. the proplem: 3.14 - Draw a sequence diagram for the Appointment scheduling by anadministrative staff.Requirements of the sequence diagram The objects involved Messages between the objects The objects’ lifelines A fragment [if any]Correct answer will be upvoted else downvoted. Computer science. Every analyst votes on the film precisely once. Since you have two servers, you can really control the votes with the goal that your film gets whatever number upvotes as could reasonably be expected. At the point when a commentator enters a site, you know their sort, and you can send them either to the principal server or to the subsequent one. What is the most extreme absolute number of upvotes you can assemble over the two servers if you choose which server to send every commentator to? Input The principal line contains a solitary integer t (1≤t≤104) — the number of testcases. Then, at that point, the depictions of t testcases follow. The principal line of each testcase contains a solitary integer n (1≤n≤50) — the number of analysts. The second line of each testcase contains n integers r1,r2,… ,rn (1≤ri≤3) — the kinds of the commentators in a similar request they enter the site. Output For…
- - Consider another carelessly written Web application, which uses a servlet that checks if there was an active session, but does not check if the user is authorized to access that page, instead depending on the fact that a link to the page is shown only to authorized users. What is the risk with this scheme? (There was a real instance where applicants to a college admissions site could, after logging into the Web site, exploit this loophole and view information they were not authorized to see; the unauthorized access was however detected, and those who accessed the information were punished by being denied admission.)Solve the following problem using Scala with Classic Akka Actors. For each problem, also implement client actors for sending the messages required for beginning the required computation. Use these client actors for testing your application actors. Read the submission instructions carefully. Sorting. It is possible to sort a number of values using a pipeline of filter actors, each responsible for one value: the first actor picks the smallest value, the second the second smallest and so on. Particularly, the first actor receives all the values, one by one. If there are more than one values received by an actor, it creates another actor; it keeps the smallest value received so far for itself, and sends all other values forward to the actor it created. Each filter actor does the same thing. Assume that each filter actor has local storage for only two of the values to be sorted: the next incoming value and the minimum value seen thus far. A sentinel is used to indicate the end of the values…blockchain is a collection ofrecords (called blocks), where each block links to the previous block using cryptography. Eachblock contains cryptographic hash, timestamp and data relevant to its application. Think ofit as a distributed ledger where instead of information being stored in a database it is storedon the blockchain. Some examples of solutions that use a blockchain at its core are:1. Cryptocurrencies (however, for this project you may NOT do a cryptocurrency)2. Smart contracts3. Trading4. Supply chain management5. Anti-counterfeiting6. Healthcare7. Domain names8. Proof of existence9. Voting10. and many others! Programming Language: Java The use of third-party libraries for primary functionally is strictly prohibited, however, third party libraries can be used for other functionality such as communications and visualisation (such as normal JavaFX, JFreeChart, GraphStream, JGraphT, Yworks, JUNG or JMonkey). The use of other data structures for auxiliary operations is…
- 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…1)In a social network, what access rights would you give to friends?What access rights would you give to the friends of your friends? How would your policy depend on the length of such a recommendation chain? 2)You are given a set of categories. Implement a lattice-based need-to-withhold policy where you selectively withdraw access rights from subjects.The system architecture as used in the above design is ? client/server, peer-to-peer, layered architecture. None of the above Describe the sequence of events captured in the diagram step-by-step. For each step, explicitly describe “Which object sends what message to which object” [the first step is provided as an example]. A user triggers the clickOnLink(v) operation on the webbrowser; [continue from here]