UNIVERSITY EXAMINATIONS: 2019/ 2020
EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN
INFORMATION TECHNOLOGY/ BUSINESS INFORMATION
TECHNOLOGY/ APPLIED COMPUTING/ SOFTWARE DEVELOPMENT/
INFORMATION SECURITY & FORENSCIS
BIT 2303/ BBIT 305: DISTRIBUTED SYSTEMS
FULL TIME/PART TIME/DISTANCE LEARNING
DATE: MAY, 2020 TIME: 6 HOURS
INSTRUCTIONS: Answer ALL Questions
SECTION B: 20 MARKS
a). The world health organisation(WHO) has appointed you as a consultant to developing a distributed
system to help in reporting covid 19 cases at a district, county, country, regional and intercontinental
level. Give a comprehensive report on the design considerations that that you will consider,
transparency, scalability, concurrency concerns (15 Marks)
b). Suggest a suitable consistency and replication mechanism for WHO (5 Marks)
NB: Marks will only be awarded for answers that are well thought out and relevant to the case
study and NOT those that will be copy pasted from the internet.
SECTION C: 20 MARKS
In reference to the above problem in section B
a) Synchronisation and the need to ensure the reporting is realtime, and the different time zones in
the world, how would you address these (10 Marks)
b) Identify the security risks and appropriate mitigation relevant to the above scenario
(10 Marks)
NB: Marks will only be awarded for answers that are well thought out and relevant to the
case study and NOT those that will be copy pasted from the internet.
