In a distributed computing environment, a group of three servers ( A , B , and C ) must agree on a time to perform a coordinated task They communicate only by sending messages to each other Due to possible network delays, they cannot assume that a message sent will be received immediately Considering the concepts of knowledge, mutual knowledge, and common knowledge, which of the following statements is correct If server A knows the task should start at 1 PM , and it communicates this to servers B and C , then it is mutual knowledge among all servers that the task starts at 1 PM If server A sends a message to both servers B and C about the 1 PM start, and server B acknowledges receipt of this message to server A , then it is common knowledge among all servers that the task starts at 1 PM If server A sends a message to both servers B and C about the 1 PM start, and servers B and C each send a confirmation to every other server, including back to server A , then it is common knowledge among all servers that the task starts at 1 PM If server A decides the task should start at 1 PM but does not communicate this decision, it remains personal knowledge and is neither mutual nor common knowledg

The Answer is in the image, click to view ...

Question: In a distributed computing environment, a group of three servers ( A , B , and C ) must agree on a time to perform

In a distributed computing environment, a group of three servers

(

,

,

and C

)

must agree on a time to perform a coordinated task. They communicate only by sending messages to each other. Due to possible network delays, they cannot assume that a message sent will be received immediately. Considering the concepts of knowledge, mutual knowledge, and common knowledge, which of the following statements is correct?

If server A knows the task should start at

1

,

and it communicates this to servers B and C

,

then it is mutual knowledge among all servers that the task starts at

1

If server A sends a message to both servers B and C about the

1

PM start, and server B acknowledges receipt of this message to server A

,

then it is common knowledge among all servers that the task starts at

1

.

If server A sends a message to both servers B and C about the

1

PM start, and servers B and C each send a confirmation to every other server, including back to server A

,

then it is common knowledge among all servers that the task starts at

1

.

If server A decides the task should start at

1

PM but does not communicate this decision, it remains personal knowledge and is neither mutual nor common knowledg

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Overview of the case. What do you think of the particular assignment given to Browning? TEXTBOOK : Brown, C.V., DeHayes, D.W., Hoffer, J.A., Martin, E.W., and Perkins, W.C. Managing Information...

CHA P TER 9 Understanding Software: A Primer for Managers 1. INTRODUCTION L E A R N I N G O B J E C T I V E S 1. Recognize the importance of software and its implications for the rm and strategic...

PRINTED BY: smj@staceymjohnson.com. Printing is for personal, private use only. No part of this book may be reproduced or transmitted without publisher's prior permission. Violators will be...

Due Week 4: Work Breakdown Structure According to the PMBOK Guide, "the WBS is a deliverableoriented hierarchical decomposition of the work to be executed by the project team, to accomplish the...

SUMMARIZE THE ARTICLE BELOW : Teams of people working together for a common purpose have been a centerpiece of human social organization ever since our ancient ancestors first banded together to hunt...

OPERATIONS MANAGEMENT ASSIGNMENT 6 1 Human resources, project management and operations management are all equally vital to a business's success. Each of these focuses on different areas of the...

INTERNATIONAL REVIEW OF L AW C OMPUTERS & TECHNOLOGY , VOLUME 11, N UMBER 2, P AGES 251-261, 1997 The Data Mart: A New Approach to Data Warehousing PAM ELA PIPE Introduction Vendors have recently...

part 1 Please list the scenarios you played. 1. students need to play 2 scenarios. For grading purposes, I will select the best two scenarios for graduate students and the best one for undergraduate...

Can you please help me with this case problem? AICPA Case Development Program. Case No. 2000-02: Recreation, Inc Case No. 2000-02: Recreation, Inc. 1 AICPA Case Development Program RECREATION, INC....

Investor Inc invested $150,000 in Investee Inc on January 1, 20X3 Investor Inc classified its investment in Investee Inc as an FVTOCI investment Investor Inc received dividends of $15,000 during the...

Draw a transamination reaction between a-ketoglutarate and alanine.

Select the answer which best completes each of the following statements: (a) Flexible budgeting is a reporting system wherein the (1) budget stan- dards may be adjusted at will; (2) reporting dates...

Prepare the Statement of Cash Flows for Smart Touch Learning for the month ended December 31, 2016 from the provided information. Within each section of the statement, use the drop-down menus to...

KEY QUESTION Trace the cause-and-effect chain through which financing and refinancing of the public debt might affect real interest rates, private investment, the stock of capital, and economic...

KEY QUESTION Why does the Federal Reserve require commercial banks to have reserves? Explain why reserves are an asset to commercial banks but a liability to the Federal Reserve Banks. What are...

KEY QUESTION Suppose the price level and value of the dollar in year 1 are 1 and $1, respectively. If the price level rises to 1.25 in year 2, what is the new value of the dollar? If, instead, the...