SECTION A $($Answer all questions from this section$)$

Question $1(40$ marks$)$

a$)$ Computer systems are said to have been designed to mimic human behavior. Use a

practical example to explain how computer systems imitate humans in analyzing

physical environments. $[15]$

b$)$ Explain what you would analyze in any three types of physical environments. $[9]$

c$)$ Differentiate physical computing from edge computing, fog computing and cloud

computing. $[8]$

d$)$ How does IoT differ from cloud computing. $[2]$

e$)$ Describe any four $(2)$ parameters that you may need to examine from any environment

of your choice. $[6]$

SECTION B $[60]($Answer any three questions from this section$)$

Question $2(20$ marks$)$

a$)$ Describe any five hardware devices needed to implement IoT systems. $[10]$

b$)$ Explain performance metrics for a physical computing and IoT system. $[10]$

Question $3(20$ marks$)$

a$)$ Use examples to describe any three types of physical environments. $[9]$

b$)$ It has been noted that Harare has recorded more than five hundred cases about

residential houses being burnt and this has been attributed to LP Gas leakage.

How would you deal with this? $[11]$

Question $4(20$ marks$)$

a$)$ Use practical examples to explain data processing for different data types. $[10]$

b$)$ Explain data communication methods. $[9]$

c$)$ State any language that you can use to build a physical computing system. $[1]$

Question $5(20$ marks$)$

a$)$ Explain how you would interface any data collection device to a data processing device. $[10]$

b$)$ Describe the following:

i$.$ ADC $[5]$

ii$.$ DAC