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Data Transmission and Reliability in Industrial Communication Systems Quiz

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Questions and Answers

What is the reliability block diagram equation for the system described in Example 2?

R = 0.98 x 0.90 x 0.98 x (1-(1-0.90)(1-0.80)) x 0.95 x (1-(1-0.70)(1-0.80)) x 0.98 (correct)
R = 0.98 x 0.90 x 0.98 x (1-(0.90)(0.80)) x 0.95 x (1-(0.70)(0.80)) x 0.98
R = 0.70 x 0.80 x 0.98 x (1-(1-0.90)(1-0.80)) x 0.95 x (1-(1-0.70)(1-0.80)) x 0.98
R = 0.80 x 0.98 x (1-(1-0.90)(1-0.80)) x 0.95 x (1-(1-0.70)(1-0.80)) x 0.98

What is the reliability of the ProfiBUS-DP in Example 2?

0.90 (correct)
0.80
0.95
0.98

Which component has the highest reliability in Example 2?

PLC
Remote manager PPC-1504 (correct)
Local operator EWS-844
ProfiBUS-DP

In Example 3, what is the target reliability objective for the bank's computerized transaction system per shift?

0.90 (A) Signup and view all the answers

How many system configurations are considered for the bank's computerized transaction system in Example 3?

Two (C) Signup and view all the answers

What is the utilization rate for transaction processors (TPs) in Example 3?

Not defined (A) Signup and view all the answers

What is the primary function of the monitoring terminals in the plant system?

Monitoring the behavior of the plant (D) Signup and view all the answers

In the system configuration described, what happens when one monitoring terminal is connected?

Other terminals get disconnected automatically (B) Signup and view all the answers

What does 'Active Redundancy' refer to in the context of parallel systems?

Only one component is required to meet system requirements (C) Signup and view all the answers

How does the 'm - out of - n System' concept relate to system functionality?

$m = n$: Indicates a serial system (C) Signup and view all the answers

What is the reliability requirement for the wireless station and mobile terminal pair?

0.80 (D) Signup and view all the answers

What is the formula to calculate the minimum system reliability based on the provided example?

$0.98 \times [1 - (1 - 0.95)^2] \times 0.80$ (C) Signup and view all the answers

What is the main consequence of a component failing in a serial system according to the text?

It results in the failure of the whole system. (A) Signup and view all the answers

How can serial system reliability be calculated if the components fail independently of each other?

$Qp R = \prod Rk$ (D) Signup and view all the answers

What is a common characteristic of a serial system in comparison to its components?

Lower reliability than its components. (C) Signup and view all the answers

In a serially connected system, what happens if any one of the components fails?

The system fails. (D) Signup and view all the answers

What does the symbol Õ represent in the context of calculating serial system reliability?

Multiplication (C) Signup and view all the answers

How do component reliabilities need to be expressed when calculating serial system reliability?

With respect to a common interval (D) Signup and view all the answers

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