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- QUESTION 4 In a transparent Distributed File System, the range of the naming mapping is an address within a single disk. True False QUESTION 5 In the presence of the possibiity of file replication, a file name can be mapped to a set of physical objects. True False QUESTION 6 A file has different names at different levels. It has a user-level textual name, and it also has a system-level numerical identifier. True FalseQuestion 3 Consider a system with three users: Alice, Jin and Priya. Each owns files alicerc, jinrc and priyarc correspondingly. Jin and Priya can read alicerc, Priya can read and write jinrc, Alice can read jinrc. Only Alice can read and write alicerc, the file she owns. Assume that each file can be executed by its owner. a. Create the access control matrix that describes the system.b. Create access control lists for all three files.Please showing working out and explaination for the following: Find types of File System Type (e.g., FAT32, NFTS, EXT3 etc.)
- In an airline reservation system, it is necessary to ensure that while one process is busy using a file, no other process can also use it. Otherwise, two different processes, working for two different ticket agents, might each inadvertently sell the last seat on some flight. Devise a synchronization method using semaphores that makes sure that only one process at a time accesses each file (assuming that the processes obey the rules).Consider the following case: Alice, Bob, and Eve are all users on a system using the Unix File Access Control system. Alice wants to create a file (that she will own) that she and Eve can both read and edit, but Bob can't. Assign user IDs to all users and create any groups that are necessary, then use this information to specify the file's access control settings.Are these system specifications consistent? “If the file system is not locked, then new messages will be queued. If the file system is not locked, then the system is functioning normally, and conversely. If new messages are not queued, then they will be sent to the message buffer. If the file system is not locked, then new messages will be sent to the message buffer.
- Are these system specifications consistent? “If the filesystem is not locked, then new messages will be queued.If the file system is not locked, then the system is func-tioning normally, and conversely. If new messages are notqueued, then they will be sent to the message buffer. Ifthe file system is not locked, then new messages will besent to the message buffer. New messages will not be sentto the message buffer.”In the situation where there are multiple users or a networked computer system, you probably share a printer with other users. When you request to print a file, your request is added to the printer. When your request reaches the front of the printing line, your file is printed. This ensures that only one person at a time has access to the printer and that this access is given on a first-come, first-served basis. Keeping that in mind whenever a new request is generated, OS will put the file in a line and prints the file which comes earlier(first). After printing the OS checks the next file and prints the next file and this goes on until all files get printed. Implement the above scenario what you have to do is: Make a File class which keeps Id, name, number of pages. Create a Printer class which takes File type array. The Printer class implements the operation “add” which adds a new file to the line by checking the available space. A remove() method in Printer class which removes…On page 4 Experience with Processes and Monitors in Mesa, Lampson and Redell state the following: "For mutual exclusion with a preemptive scheduler, it is necessary to introduce explicit locks, and machinery that makes requesting processes wait when a lock is unavailable. We considered casting our locks as semaphores, but decided that, compared with monitors, they exert too little structuring discipline on concurrent programs." How do semaphores "exert too little structuring discipline" and how is this remedied by monitors? Construct an example to show how the structuring discipline exerted by monitors could be useful.
- In the situation where there are multiple users or a networked computer system, you probably share a printer with other users. When you request to print a file, your request is added to the printer. When your request reaches the front of the printing line, your file is printed. This ensures that only one person at a time has access to the printer and that this access is given on first-come, first-served basis. Keeping that in mind when ever a new request is generated, OS will put the file in line and prints the file which comes earlier(first). After printing the OS checks the next file and prints the next file and this goes on until all files gets printed. Implement the above scenario what you have to do is: Make a File class which keeps Id, name, number of pages.Create a Printer class which takes File type array.The Printer class implements the operation “add” which adds a new file to the line by checking the available space.A remove() method in Printer class which removes the file…1. What are the different scheduling algorithms? In your opinion, Which is the easiest to implement? 2. What is a deadlock? 3. Explain the following Deadlock Conditions: Mutual Exclusion Hold & Wait No Preemption Circular Chain of RequestIn the traditional UNIX file access model, UNIX systems provide a default setting for newly created files and directories, which the owner may later change. The default is typically full access for the owner combined with one of the following: no access for group and other, read/execute access for group and none for other, or read/execute access for both group and other. Briefly discuss the advantages and disadvantages of each of these cases, including an example of a type of organization where each would be appropriate