logo Use SA10RAM to get 10%* Discount.
Order Now logo

Ask This Question To Be Solved By Our ExpertsGet A+ Grade Solution Guaranteed

expert
Bobby DavroComputer science
(5/5)

515 Answers

Hire Me
expert
lahiruEducation
(/5)

957 Answers

Hire Me
expert
Gavin PhillipssEconomics
(5/5)

689 Answers

Hire Me
expert
Alexx WardEconomics
(5/5)

687 Answers

Hire Me
Assembly Programming

What is the cache block size (in words)? How many entries does the cache have? What is the ratio between total bits required for such a cache implementation over the data storage bits?

INSTRUCTIONS TO CANDIDATES
ANSWER ALL QUESTIONS
  • What is the cache block size (in words)?
  • How many entries does the cache have?
  • What is the ratio between total bits required for such a cache implementation over the data storage bits?
  • The following table represents the byte-addressed cache references starting from power on. Time 0 is the first memory access, and time 15 is the most recent memory access.  Fill in the table by converting the address to binary, deriving the index number, and recording if the entry in the cache was replaced.

Only the bolded values (added by Sri) are worth marks. 

 

Time

Address

Address in Binary

Index

Cache Entry Was Replaced (Yes or No)

0

0

 

 

 

1

4

 

 

 

2

16

 

 

 

3

132

 

 

 

4

232

 

 

 

5

160

 

 

 

6

1024

 

 

 

7

30

 

 

 

8

140

 

 

 

9

3100

 

 

 

10

180

 

 

 

11

2180

 

 

 

12

3505

70

 

 

13

185

 

 

 

14

869

 

 

 

15

7041

 

 

 

 

  • What is the hit ratio?
  • List the final state of the cache, with each valid entry represented as a record of <index, tag, data>.  There may be extra rows, or blank rows.

b. Textbook question 5.8 with adjustment by Sri – 4 marks.
Based on section 5.5 in the textbook.

Mean Time Between Failures (MTBF), Mean Time To Replacement (MTTR), and Mean Time To Failure (MTTF) are useful metrics for evaluating the reliability and availability of a storage resource. Explore these concepts by answering the questions about devices with the following metrics.

Item

MTTF

MTTR

MTBF

Availability

Smart phone

3 years

1 day

 

 

 

Any desktop hard drive

6 years

2 days

 

 

Specific desktop hard drive (order through Amazon)

6 years

4 days

 

 

Enterprise SSD with onsite replacement warranty

167 years

4 hours

 

 

 

Calculate the MTBF for each of the devices in the table by filling in the MTBF column in the chart above.

Calculate the availability for each of the devices in the table by filling in the Availability column in the chart above.

3. a) What happens to availability as the MTTR approaches 0?

     b) Is this a realistic situation?

 4. a)   What happens to availability as the MTTR gets very high, i.e., a device is difficult to repair?

     b)    Does this imply the device has low availability? (Sri note: This is a real problem with NAS/SAN’s where a ‘drive’ is really a box with many drives in it, and fixing a SAN could require a specialist electronics technician to diagnose the board and solder replacement components on, this has happened at Trent before). 

Related Questions

. The fundamental operations of create, read, update, and delete (CRUD) in either Python or Java

CS 340 Milestone One Guidelines and Rubric  Overview: For this assignment, you will implement the fundamental operations of create, read, update,

. Develop a program to emulate a purchase transaction at a retail store. This  program will have two classes, a LineItem class and a Transaction class

Retail Transaction Programming Project  Project Requirements:  Develop a program to emulate a purchase transaction at a retail store. This

. The following program contains five errors. Identify the errors and fix them

7COM1028   Secure Systems Programming   Referral Coursework: Secure

. Accepts the following from a user: Item Name Item Quantity Item Price Allows the user to create a file to store the sales receipt contents

Create a GUI program that:Accepts the following from a user:Item NameItem QuantityItem PriceAllows the user to create a file to store the sales receip

. The final project will encompass developing a web service using a software stack and implementing an industry-standard interface. Regardless of whether you choose to pursue application development goals as a pure developer or as a software engineer

CS 340 Final Project Guidelines and Rubric  Overview The final project will encompass developing a web service using a software stack and impleme

Get Free Quote!

386 Experts Online