What happens if a page is requested when all pages in the buffer pool are dirty?
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- Assume that you have an empty buffer pool of size 4 pages and will access this access patternin the given order: RDBMSTHEORY. At the end of accessing all the pattern, what is the contentof the buffer pool (write in alphabetical order)? Use the CLOCK algorithm as the bufferreplacement policy and don't advance the clock when the requested page is already in thebuffer.Please DO NOT respond to this question by copy/pasting the code provided elsewhere on the site, none of those work. Thanks. Virtual Memory Lab This lab project addresses the implementation of page-replacement algorithms in a demand-paging system. Each process in a demand-paging system has a page table that contains a list of entries. For each logical page of the process, there is an entry in the table that indicates if the page is in memory. If the page is in memory, the memory frame number that page is resident in is indicated. Also, for each page, the time at which the page has arrived in memory, the time at which it has been last referenced, and the number of times the page has been referenced since the page arrived in memory are maintained. The page table data structure is a simple array of page-table entries (PTEs). Each PTE contains five fields as defined below: struct PTE { int is_valid; int frame_number; int arrival_timestamp; int…Please write in C/C++Write a program that spawn 2 thread: a producer and a consumer The producer thread MUST open an input file and repeatedly copy values to a CIRCULAR BUFFER The consumer should open an output file and repeatedly copy values from the same circular buffer to the file. If the producer is unable to write to the buffer (because it does not contain enough empty elements), or if the consumer is unable to read from the buffer (because it does not contain enough unread items), then it should proceed to the next iteration, choosing a new random number of bytes to copy.
- What is the link library procedure called that says, "Press [Enter] to continue." and waits for someone to press the Enter key?What is the relation between the variables in and out when the buffer is full? a.None of these b.in=out c.in is not equal out d.in greater than out2. Start with an empty buffer pool of size 4 pages again. This time use this access pattern:♯SAGLIKLIMUTLUBAYRAMLAR♯. At the end of accessing all the pattern, what is the content ofthe buffer pool (write in alphabetical order)? Use the LRU algorithm as the buffer replacementpolicy.
- IN JAVA Script - There is one operator in JavaScript, which is able to provide the rest of the partition function. Two numbers are passed as parameters. The first parameter divided by the second parameter will have a remainder, possibly zero. Return that number. Examples - remaining (1, 3)· remaining (3, 4) → 3 remaining (-9, 45) – -9 remaining (5, 5) → 0In an executable object file that is in executable and linkable format (ELF), which section defines the addresses of the stack and the heap? A. The data section B. The .text section C. These addresses are not defined in the executable object file. Instead, they are assigned by the operating system when the program is loaded in to me D. These addresses are not defined in the executable object file. Instead, they are assigned by the user when the program is running in memory. Reset SelectionCreate a postfix-to-infix translator with layers. The application should receive a postfix expression and output the corresponding infix expression until the user leaves. Throw an exception if the postfix phrase provided is illegal.
- using C language Write a program that creates an array of size 10000, then creates two threads.should requests entrance to the critical section that is controlled through semaphores, reads the values written in the array, and writes it to the screen with the following format: "Consumer consumed item number - from position - with the value -" And to a file named Consumer activity, then exits the critical section, and repeats till the producer finishes productionScenario: You have been tasked with building a URL file validator for a web crawler. A web crawler is an application that fetches a web page, extracts the URLs present in that page, and then recursively fetches new pages using the extracted URLs. The end goal of a web crawler is to collect text data, images, or other resources present in order to validate resource URLs or hyperlinks on a page. URL validators can be useful to validate if the extracted URL is a valid resource to fetch. In this scenario, you will build a URL validator that checks for supported protocols and file types.HMM Viterbi MLS Calcucation Write a program named hmm_viterbi that takes two command-line arguments: a model file name and a text file name that contains a single untagged sentence. This program should load the given model, then use the viterbi algorithm to find the most likely POS tag sequence for the given sentence.