The following table shows the contents of a 4-entry TLB. Entry-ID Valid VA Page Modified Protection PA Page 1 2 3 4 1 0 1 1 140 40 200 280 1 0 1 0 RW RX RO RW 30 34 32 31 Under what scenarios would entry 2’s valid bit be set to zero?What happens when an instruction writes to VA page 30? When would a soft ware managed TLB be faster than a hardware managed TLB?What happens when an instruction writes to VA page 200?

Q: Consider the following TLB for with 6-bit VPNS and 8-bit PFNS: VPN PFN valid prot 54 184 1wx 42 197…

A: Since 8-bit processor has 8 bit address size and size of page number is 6 bit, hence number of bits…

Q: Suppose there is a paging system with a translation lookaside buffer. Assuming that the entire page…

A:

Q: 2) Assuming X22 has 7000, what address will be stored in X9 by: LDUR X9, (X22, #7] a) 7000 b) 7007…

A: According to the information given:- we have to find out the correct option on the basic of LDUR X9,…

Q: Consider the following page table in a demand paging system. Assume the page size of 256 bytes.…

A: using demand paging system assume the page size of 256 bytes.

Q: ARP and DNS both depend on caches; ARP cache entry lifetimes are typically 10 minutes, while DNS…

A:

Q: In a demand paging system, page faults do not happen on every memory access because . Select one: O…

A: In any system that uses demand paging, the operating system copies a disk page into physical memory…

Q: 3. If the virtual address Ox1000 0043 is on physical page Ox42, then what do the following TLB entry…

A: Answer: I have given answered in the handwritten format

Q: A 64 KB four-way set-associative cache is byte addressable and contains 32B lines. Memory addresses…

A: Over here we have given 64KB four-way set-associative cache is byte-addressable and contains 32B…

Q: Consider a system where the page fault service time is 200ms, and the main memory access time is…

A: To find Effective memory access time.

Q: Q 5: Avirtual memory has a page size of 1K words. There are eight pages and four blocks. The…

A: We should start with knowing some general information about Virtual Memory, Pages, Blocks,…

Q: The following table shows the core map of a virtual memory system at time t, which has a page size…

A: given data

Q: Consider the following two statements: S1: A cyclic dependency always lead to a deadlock S2: If the…

A: Introduction :given , Two statements related to database , we have to find out which of them is /…

Q: ARP and DNS both depend on caches; ARP cache entry lifetimes are typically 10 minutes, while DNS…

A: The question has been answered in step2

Q: Some computers have an instruction that atomically exchanges the values of two memory locations. It…

A: Exchange(int var1, int var2):⟨ int temp; temp = var1; var1 = var2; var2 = temp; ⟩Above, temp is an…

Q: Given a scenario where there are four frames. The following table shows the loading time of a page…

A: Im providing the answer of the above question. I hope this will help..

Q: We have a machine with 32 bit addresses. The L1 cache is 4-way set associative and stores 32 blocks.…

A:

Q: Determine the number of page table entries (PTEs) that areneeded for the following combinations of…

A: Number of page table entries = address size / page size

Q: e differences simple pagi

A: Sorry for that as per the bartleby guidelines we can solve only one for you if you want to another…

Q: Memory address Data According to the memory view given below, if RO = Ox20008002 then LDRSB r1, [ro,…

A: Lets see the solution.

Q: Suppose we define a service routine starting at memory location x4000. This routine reads in a…

A: Given: As per the policy we can answer single question at time , but i answering 1st and 4th for…

Q: A computer has four page frames. The time of loading, time of last access, and the R and M bits for…

A: a) NRU-It means  Not recently used. it will replace that page having R and M bit is zero.…

Q: Upon execution of MOV [BP+01], SI with DS = 2000, SS = 4000 H, BP = 3000 H, SI = %3D 4588 , the…

A: We need to consider the 20-bit address, so when we multiply with 220 the answer is 24589.

Q: For each of the following page replacement policies, list the total number of page faults and fill…

A: Answer:Clock page replacement:

Q: Question 1 Suppose that the WSClock page replacement algorithm uses a tau (t) of ten ticks, and the…

A: Solution (A) For Page1& Page2, the refrence will be reset to zero, so the new entries for Page1…

Q: A computer has four page frames. The time of loading, time of last access and the R and M bits for…

A: The Answer is in Below Steps

Q: A. Virtual address format 13 12 11 10 9 8 7 6 5 4 3 2 1 0 hapter 9 Virtual Memory B. Address…

A: Answer

Q: Explain why IN/OUT (port-based) accesses provide lower I/O performance than MMIO. Select all correct…

A: Explanation:- Рrimаry  reаsоns  why  the  IN/ОUT  роrt  bаsed  ассess  hаve  lоwer  рerfоrmаnсe…

Q: calculate P(e | w1) Calculate P(e|wl) Cache warning W W memory-size Warning W Over flow Error Stack…

A: P(e/w1) = P(e and w1) / P(w1) P(e/w1) = P(e)P(w1) / P(w1) P(e/w1) = P(e)  Explanation: Assuming…

Q: Suppose we have already the page table shown below, what happens when CPU generates address 3000?…

A: Given:

Q: A) Virtual address page 3, offset 7 results in a TLB hit or miss? If TLB hit, what’s the main memory…

A: Here is the solution for the above problem.  A) Solution: Virtual page = 4, Here it will result in…

Q: same cache line address X. Given that our used cache coherence protocol is MSI, fill the table…

A: According to the question , we have to fill the given table according to used cache coherence…

Q: 2. If the contents of the page table are as follows: VPN PPN Valid 021 1 31 20 3 11 4 5 01 10 6-0 7…

A: (a) 0x1AE in decimal is 430 which on modulus by 8 (since there are 8 VPN given) gives 6. Since at…

Q: Assume we have a demand-paged memory. The page table is held in registers. It takes 3 milliseconds…

A: Effective Access Time =  (1 - p) * (memory access time) + p * (1 - pm) * (page fault service with no…

Q: Figure below refers to memory management using paging. The logical address space (left) and page…

A: ans is given below

Q: What is the effective memory access time if the memory access time is 450 ns and a page fault takes…

A: Effective access time The 'effective access time' is essentially the (weighted) average time it…

Q: In a page addressing system of 10 bits, where four bits are used for the page number, what would be…

A: your question is about what would be the number of frames that would be required in the physical…

Q: we have not provided for any type of error handling, such as if the address on the address lines…

A: Given Table:

Q: 7. Consider the following high-level code snippet. Assume that the base addresses of temp is held in…

A: 7. Answer:- Mov R0, #1; i=0 start loop CMP R0,  #100 BGT endloop Mul tempi, tempi, 128 Add R0, R0,…

Q: An university student was trying improve the performance of one of the test computers. Computer…

A: Lets see the solution.

Q: When a Page Fault is encountered during a Virtual Address translation to Physical Address, either…

A: When a page fault occur , exception is raised by  hardware when a running program accesses a memory…

Q: A computer with 32 bits virtual address uses a two-level page table. Virtual addresses are split…

A: GIVEN: A computer with 32 bits virtual address uses a two-level page table. Virtual addresses are…

Q: Suppose we define a service routine starting at memory location x4000. This routine reads in a…

A: Given: I am answering the 1st and last question as per the bartlebey policy we can answer single…

Q: 1.2. Consider the following page address stream: 701203042 303212017 Use the following replacement…

A: LRU algorithm When Number of fames is 4 : Let Assume Total frames =  4 Algorithm: LRU Reference…

Q: Suppose you have a byte-addressable virtual address me system with 8 virtual pages of 64 bytes each,…

A: Solution: Considering that it is be available 64byte = 8 pages contains so, TNB(total number of bits…

Q: table 1 requests 75M Page Time Loaded Last Reference R bit M bit 2 117 212 1 1 0 130…

A:

Q: Given the following process, and the following page table. Which of the following options…

A: Answer: Option A 148

Q: A system that uses a two-level page table has 212 bytes pages and 32-bit virtual addresses. Assume…

A: Data given, 2^12 bytes pages  32-bit virtual addresses 4-byte each entry 10 bits of address serve as…

Q: Consider the following page address stream: 2 4 2 4 1 2 5 1 3 3 1 Using the Least Recently Used…

A: The answer is

Q: If each interval shown in Figure 7.11 is 50ns, how long would it take to transfer 10 bytes of data?…

A: There will be three kinds of time slot used for establishing the connection from the source to the…

Fundamentals of memory

A collection of connected storage devices form the memory unit. It is a space to store data and instructions required for processing. Information is stored in a memory unit in the form of bits. There are two types of memory namely: