Module 10- Assignment

docx

School

Ashford University *

*We aren’t endorsed by this school

Course

CIS665

Subject

Electrical Engineering

Date

Apr 3, 2024

Type

docx

Pages

Uploaded by CommodoreRedPandaPerson1049

Module 10 - Assignment 1. Explain the difference between a serial and a parallel bus. Why would you choose one mode of transfer over the other? Give examples of how each is used and why. ● Parallel buses require more lines, but can transfer data in blocks and can be faster. ● Parallel bus must align the clock, and clock skew can be a problem unless length is short. ● Asynchronous bus uses a handshaking protocol for coordinating usage rather than a clock; can host a wide variety of devices of different speeds ● For internal buses (lines on the CPU), buses are parallel. ● For system buses (lines to memory, controllers, etc), normally parallel, but can be serial. ● For buses to thing like disk drives, used to be parallel (PATA parallel SCSI), now more serial (SATA, serial SCSI) ● External buses (usb, firewire, network) are serial. 2. What are RAID 0, RAID 1, RAID 5, and RAID 10? Give examples of why you would use each of these. Which are faster, and why? Which of these give you greater reliability and why? What is hot swapping, and has does it impact reliability? RAID 0 No redundancy (“AID”?) Just stripe data over multiple disks But it does improve performance RAID 1: Mirroring N + N disks, replicate data Write data to both data disk and mirror disk On disk failure, read from mirror 3. Be able to give a simple example of Bus Mastering using one device and the CPU controlling the System Bus. How are the BR, BG, and Int signals used? 1 – CPU controls memory access

2 - Controller Bus Request (BR) is raised. 3 – When ready, CPU raises Bus Grant (BG) 4 – When done, Controller lowers BR 5 – CPU lowers BG 6 – Controller signals interrupt to CPU 4. What lines are generally part of the System Bus? A parallel bus that simultaneously transfers data in 8-, 16-, or 32-bit channels and is the primary pathway between the CPU and memory. For system buses (lines to memory, controllers, etc), normally parallel, but can be serial. 5. Why does the kernel use kernel memory and not user memory when communicating with the System Bus using DMA memory. 6. What is DMA, and how does it work. A mechanism that provides a device controller with the ability to transfer data directly to or from the memory without involving the processor OS provides starting address in memory I/O controller transfers to/from memory autonomously Controller interrupts on completion or error 1. The processor sets up the DMA by supplying the identity of the device, the operation, the memory address (source or destination), and the number of bytes to transfer 2. The DMA controller starts the operation on the device When the data is available, it transfers the data The DMA controller supplies the memory address for the R or W. If the request requires more than one transfer, the DMA controller generates the next memory address, and initiates the next transfer A DMA unit can complete an entire transfer, which may be thousands of bytes in length, without bothering the processor 3. When the DMA transfer is complete, the controller interrupts the processor 7. Contrast DMA with interrupts with polling.

Polling and interrupt-driven I/O CPU transfers data between memory and I/O data registers Time consuming for high-speed devices 8. Know what disk dependability is, and how to apply the concept correctly. 9. What is Amdahl's law, and why is it important? Don’t neglect I/O performance as parallelism increases compute performance Example Benchmark takes 90s CPU time, 10s I/O time Double the number of CPUs/2 years I/O unchanged The parallel revolution needs to come to I/O

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

SCI201_Week10A.docx

Copy of Biosphere Homework.pdf

ECE205 Lab 3_ RMS.pdf

Related Questions

Choose the correct Answer: The difference in the propagation delay between the fastest and slowest pairs of the same un-twisted pair cable is called, O a. Delay Distortion O b. Propagation Speed O . Propagation Time O d. Delay Skew O e. Cross Talk

The question is attached in the image. Total answer is needed.

The Vrms value is wrong

What is ampere circuital law?

How many rows and columns becomes zero in a Jacobian matrix due to SLACK BUS ? Why or how can you justify it ?

Apart from special orders, feeder busway sections come in standard_-foot lengths. A. 6 B.8 C.10 D. 12

Motor driven by PWM using full-bridge operation provides finer resolution than half-bridge operation. True or False?

SEE MORE QUESTIONS

Recommended textbooks for you

Introductory Circuit Analysis (13th Edition)

Electrical Engineering

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:PEARSON

Delmar's Standard Textbook Of Electricity

Electrical Engineering

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Cengage Learning

Programmable Logic Controllers

Electrical Engineering

ISBN:9780073373843

Author:Frank D. Petruzella

Publisher:McGraw-Hill Education

Fundamentals of Electric Circuits

Electrical Engineering

ISBN:9780078028229

Author:Charles K Alexander, Matthew Sadiku

Publisher:McGraw-Hill Education

Electric Circuits. (11th Edition)

Electrical Engineering

ISBN:9780134746968

Author:James W. Nilsson, Susan Riedel

Publisher:PEARSON

Engineering Electromagnetics

Electrical Engineering

ISBN:9780078028151

Author:Hayt, William H. (william Hart), Jr, BUCK, John A.

Publisher:Mcgraw-hill Education,

SEE MORE TEXTBOOKS

Related Questions

Recommended textbooks for you

Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning
Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON
Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,