Choose the correct answer:1. Which of the following is the fastest approach for large amount of data I/O?a. Polling direct I/Ob. Interrupt based direct I/Oc. Interrupt based DMAd. Polling memory mapped I/O2. Which of the following can be considered an example of critical section?a. An intersection of road for traffic passing itb. Alice is reading a book and Bob is watching TV. None of them wants to do anything else.c. When taking a test, each student works on his/her own copy of question paper d. None ofthe above.3. Which of the following can help to break a deadlock of OS?a. Chainsaw, grinder, or anything similarb. Mutual exclusive accessc. Hold and waitd. Preemption4. When a program accesses a page not in the memory, which of the following will happen?a. The program will be abortedb. Core dump by OS kernelC.A page fault that triggers loading a page to the memoryd. A prompt asking if the user would like to continue5. Which of the following is used to maintain mapping of pages to the page frames?a. Page tableb. Segment registersc. Page faultsd. Interrupts 6. UNIX file systems are usinga. File allocation tableb. Page tablesc. Indexed allocationd. None of the above7. Cloud computing is implemented througha. Depending on the weather, location, etc. too complicated to sayb. Linux like Fedora, Ubuntu, etc.c. Windows 10d. Virtualization platforms like VMWare, Xen, KVM, etc.8. What is ACM in computer security?a. Association of Computing Machineryb. Access Control Mechanismsc. Access Coordination Monitord. Access Control Matrix

Option d: Memory-mapped I/O is suitable for devices which move quantities of data quickly. Option…

1. Which of the following is the fastest approach for large amount of data 1/O? a. Polling direct I/o b. Interrupt based direct I/0 c. Interrupt based DMA d. Polling memory mapped I/O 2. Which of the following can be considered an example of critical section? a. An intersection of road for traffic passing it b. Alice is reading a book and Bob is watching TV. None of them wants to do anything else. c. When taking a test, each student works on his/her own copy of question paper d. None of the above.

1. Which of the following is the fastest approach for large amount of data 1/O? a. Polling direct I/o b. Interrupt based direct I/0 c. Interrupt based DMA d. Polling memory mapped I/O 2. Which of the following can be considered an example of critical section? a. An intersection of road for traffic passing it b. Alice is reading a book and Bob is watching TV. None of them wants to do anything else. c. When taking a test, each student works on his/her own copy of question paper d. None of the above.

A+ Guide to Hardware (Standalone Book) (MindTap Course List)

9th Edition

ISBN:9781305266452

Author:Jean Andrews

Publisher:Jean Andrews

Chapter4: Supporting Processors And Upgrading Memory

Section: Chapter Questions

Problem 4TC

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Which of the following is correct regarding Memory-Mapped I/O? Select one: a. Memory-Mapped I/O is more complex and inflexible in handling I/O operations. b. The same memory reference instructions (read/write) can be used for I/O transfers. c. There are separate input and output instructions to handle I/O data transfers. d. There is a separate memory and I/O address space. O e. The available memory address space is larger when using Memory-Mapped I/O.
Q.Give answers to each. a. How can we hook an interrupt? b. Howthe address of a required interrupt handler is found? C.What is difference between maskable and non-maskableinterrupts?
Suppose we had a block transfer from an I/O device to memory. The block consists of 1024 words and one word can be transferred to/from memory at a time. a. What is the number of interrupts needed to transfer a block using DMA? b. What is the number of interrupts needed to transfer a block using interrupt driven I/O? c. What is the number of interrupts needed to transfer a block using programmed I/O’?
Assume there is a PCI buffer that is used for data transfers between primary memory and a webcam. The memory transfers 15 frames where each frame is 1M byte in size and the buffer size is 1K byte. 1-How many data transfers will be required? 2-A transfer operation requires 2 interrupts. Start and stop. How many interrupts will occur for the data transfer? 3-What are the two commands that will be issued by the supervisor for each interrupt?
The output I got is 32768. Then after that line are next three lines of "(null)" with error message "Memory address out of bounds." This is the updated code that you provided: .datanewline: .asciiz "\n" .globl main .textmain: # compute the next state of the LFSR for each input state li $a0, 0x00000001 jal lfsr_next_state move $t0, $v0 li $a0, 0xdeadbeef jal lfsr_next_state move $t1, $v0 li $a0, 0x200214c8 jal lfsr_next_state move $t2, $v0 li $a0, 0x00000000 jal lfsr_next_state move $t3, $v0 # print the output states li $v0, 1 # set system call for printing integer move $a0, $t0 syscall la $a0, newline li $v0, 4 # set system call for printing string syscall move $a0, $t1 syscall la $a0, newline syscall move $a0, $t2 syscall la $a0, newline syscall move $a0, $t3 syscall # exit the program li $v0, 10 syscall # Function to compute the next state of an LFSR# Input parameter: $a0…
Which is wrong about virtual memory: o Swapping when there is no hit in main memory o A page fault occurs when there is no hit in main memory o Virtual address mapped into actual address by mapper O All are not correct
2. MIPS integer multiplication and division are performed by the same device as integer addition and subtraction. Given these facts, which of the following statements must be true? MIPS integer multiplication and division are performed by the same device as integer addition and subtraction. Given these facts, which of the following statements must be true? a.the CPU Control Unit has one 64 bit register that holds the result of multiplying and dividing integers b.the ALU is used to calculate integer multiplication and division c.the register file for all of the $t registers calculates integer multiplication and division d.the CPU has a special purpose register in its half adder that calculates integer multiplication and division
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What are the contents of the 25 memory bytes starting at address A, in hex, on a machine that uses Little Endian? (Hint: “a”=061h) Consider the following .data segment: A dw 0AAFFh B db 051h, 0CCh, 0EEh C times 3 dw -23 D dd -177 E db "e", -5, "c", 0 F times 2 dw -17 G dw 0EEh
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6. The method of accessing the I/O devices by repeatedly checking the status flags is a. Program-controlled I/O b. Memory-mapped I/O c. I/O mapped d. None of the above
At a minimum, how many bits are needed in the MAR with each of the following memory sizes? a. 1 million bytes b. 10 million bytes c. 100 million bytes d. 1 billion bytes