When many processes are being executed and there is insufficient space in the main memory, some processes are shifted out of main memory on a temporary basis. This method is known as_ O a. Virtual Memory O b. Fragmentation c. Swapping O d. Paging
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- Describe the difference among the following:a. process and thread b. user-level thread and kernel-level thread c. uniprogramming and multiprogramming d. preemptive and non-preemptive scheduling e. paging and segmentationWith virtual memory, when a program requests memory,the memory management system does which of the following? Select one: A. It grants the request as long as there is enough physical memory to accommodate B. It looks up the address in the page table. If the address is in memory, then it grants the request. C. It looks up the address in the page table. If the address is in memory, it grants the request. If the address is stored to disk, it writes a section of memory to disk and then transfers the requested virtual memory address from disk to main memory. D. It causes a deadlock to occur.Static vs dynamic memory allocation: what's the difference?
- When it says "memory leaks," what exactly are we talking about when it comes to dynamic memory allocation?Name the method where free memory space is created when a process is terminated. O a. Fragmentation O b. Compaction O c. Segmentation O d. PartitionIn other words, you should just presume that there is no such thing as code that can be moved. How can we make memory paging more difficult?
- In a main memory-disk virtual storage system, the page size is 1KByte and the FIFO algorithm is used for page replacements. A given program has been allocated three page frames in the main memory and it makes the following 16 memory references when it starts executing (the addresses are given in decimal):500, 2000, 2500, 800, 4000, 1000, 5500, 1500, 2800, 400, 5000, 700, 2100, 3500, 900, 2400 Fill in the contents of the three page frames after each memory reference in a table and calculate the hit ratio. Hint: denote by 'a' the page consisting of locations 0 through 1023 in memory. Similarly, b: 1024-2047, c: 2048-3071, d: 3072-4095, e: 4096-5119 and f: 5120-6143. Round to three decimal places.True or false: Temporal locality is the tendency for a program to access a memory address shortly after accessing a 'nearby' memory addressWhenever a new value is placed in a memory location, that value overrides the previous value in that location. This process is said to be?
- Please let me know if these are true or false! In multiprocessors with a shared physical main memory, an access to a word of main memory always takes about the same amount of time no matter which word is being accessed and by which processor: T/F? When reading data from a magnetic disk, the rotational latency increases linearly with the size of the request: T/F? SSD is faster to access than magnetic disk, but slower than DRAM main memory: T/F? The primary purpose of RAID is for data backups: T/F? Typically, data parallelism offers greater opportunities for achieving highly-parallel execution than does functional parallelism: T/F? In MIPS systems, one way to implement locks is with the MIPS test-and-set machine language instruction: T/F?When address binding is done at run time, Physical address space is A. the set of all addresses generated by the CPU B. the set of all addresses seen by the memory unitC. all of the above D. none of the aboveSuresh and Ramesh started creating an application where it requires to do some mathematical operations.They are going to deploy it in a server. They wanted to do simultaneous execution of multiple parts ofprograms to utilize CPU time. They decided to create 2 separate threads for operations: num**2 andsqrt(num) with sleep of 100ms each.Write a program containing two threads and each thread should have a sleep of 100 ms. One thread is forcalculating the square of the elements in the array and other is for square roots.Trace the output in the threads only. Use Exception handling to handle and trace the interruptions if they occur.Input: An array. Can use static data. Preferably try to use run() and start().Output:"Thread 1"+ square(num)"Thread 2"+ square root(num)likewise to distinguish the thread status