Consider the following page table. Assume that there are 4 virtual pages and 2 physical pages. Page size is 16bytes. index ppn R bit D bit 1. 1. 3 ppn: physical page number Index: virtual page number What is the equivalent physical address for virtual address Ox14?
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- question 3 : With the same physical memory and the same initial page assignments as in question 1, how many page faults will occur If Optimal page replacement is used ? Assume the reference string (RS) is the same 0172327103? Time t 0 1 2 3 4 5 6 7 8 9 10 RS 0 1 7 2 3 2 7 1 0 3 Frame 0 0 Frame 1 1 Frame 2 2 Frame 3 3 please find the below question 1 for reference as stated in question 3 above and please answer question 3 accordingly: question 1 : The physical memory consists of 4 frames: 0 through 3. Initially, the frames contain the pages 0 through 3 (as shown at time 0). If FIFO page replacement is used, how many page faults will occur with the reference string (RS) 0172327103?Consider the following page reference string: 7, 2, 3, 1, 2, 5, 3, 4, 6, 7, 7, 1, 0, 5, 4, 6, 2, 3, 0, 1. Assuming pure demand paging with three frames (3 pages can be in memory at a time). a)Using FIFO replacement algorithm, show the content of the memory (which pages are in memory) for each page reference. b) How many page faults resulted from this algorithm? c) Repeat a) and b)above with LRU algorithm.Consider a main memory with five page frames and the following sequence of page references: 3, 8, 2, 3, 9, 1, 6, 3, 8, 9, 3, 6, 2, 1, 3 What is the total number of page faults that occur when least recently used (LRU) page replacement policies are used? Describe with page frames
- “Dirty bit is used to reduce the overhead of page transfer”. Statewhether the given statement is true or false. Justify your answer withsuitable example.Consider the following page address stream: 2 1 4 3 5 3 2 4 5 2 1 2 4 3 1 Which of the following causes the most page faults to occur on a machine with 3 frames? Scheme that causes the most faults: a) First in First out b) LRU and FIFO are the same number of faults c) FIFO and Opitimal are the same number of faults d) All have the same number of faults e) Least Recently Used f) No faults occurs g) LRU and Optimal are the same number of faults h) Optimal NUMBER OF FAULTS CAUSED: a)With the same physical memory and the same initial page assignments as in question 1, how many page faults will occur If LRU page replacement is used ? Assume the reference string (RS) is the same 0172327103? Time t 0 1 2 3 4 5 6 7 8 9 10 RS 0 1 7 2 3 2 7 1 0 3 Frame 0 0 Frame 1 1 Frame 2 2 Frame 3 3
- Consider the following main memory word reference string; start with an empty cache all block initially marked as not valid Using Spatial Locality: 1 3 5 4 0 6 2 5 1 3 Find the number of requests? Find number of Hits? Find number of Misses? PLZ GIVE ME FULL SOLUTION ASAPAssume the following scenario for multi-level paging used by a process that has following: a. Logical Address = 64 bits b. Page size = 1 M Byte c. Page table entry size = 4 Byte d. System is byte addressable. calculate the following. 1. Logical Address Space? 2. Maximum number of page table entries in a single page? 3. How many levels of page table entries will be used? 4. Compute the size of page tables at each level? 5. Compute the number of entries in a single page? 6. Compute the number of pagesConsider a word-based, four-way set associative cache with 64 bits. Each line has eight words, and the total number of sets is forty-nine thousand. What is the cache's size? a) 1 megabyte b) 10 megabytes c) 4 megabytes d) 512 kilobytesBefore a network can be called effective and efficient, three requirements must be met. Please write a short description in your own words of the one you've chosen.
- Consider a web page whose base file is of size S1 = 10 KB. Assume that the web page consists of N = 20 inline objects each of size S2 = 100 KB. Assume that the round-trip time to the web server is T = 100 ms and the bottleneck capacity is C = 10 Mbps. Ignore any packetization delays and header overhead.a. Assuming non-persistent HTTP is used with a single TCP connection, how long does it take to download the web page?b. Assuming non-persistent HTTP is used with 4 parallel TCP connections, how long does it take to download the web page?c. Assuming pipelined, persistent HTTP is used, how long does it take to download the web page? ”Pipelined” means requests for multiple objects can be sent back-to-back on the same connection.d. Assuming non-pipelined, persistent HTTP with 2 parallel TCP connections is used, how long does it take to download the web page? Assume that the 2 parallel connections equally share the total available bandwidth C.This header may be used to determine if a cached page has been modified since it was last accessed. Requests may be made for pages that include pictures, sound, video, and other types of media, in addition to HTML. Do you believe that the efficacy of this approach is greater or worse when used to JPEG pictures as opposed to HTML code? Consider the definition of "efficacy" carefully, and then provide an explanation for your choice.Consider the following page referance string:4,2,2,4,6,4,1,2,3,4,1,2,6,1,5How many page faults would occur for the Second Change (or Clock) Page replacement, assume three frames?Remember that all frames are initially empty, so your first unique pages will cost one fault each