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The following state transition diagram describes the functionality involved in a system using fingerprint and password authentication to log onto a system.
How many distinct states of the system are visible in the above diagram?
Suggested Answer: C
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The state transition diagram provided shows three distinct states:
Waiting for fingerprint
Waiting for PIN
Valid PIN/ask menu selection
Each state represents a different stage in the system's operation, with transitions based on user actions and system responses.
36 comments · newest first
ST
Stephaine
10 months ago
Definitely 3 states, no doubt about it!
OL
Ollie
11 months ago
I thought there were only 2 states, honestly.
HA
Halina
11 months ago
Wait, are we sure about that? Looks like 4 to me.
VI
Vicki
11 months ago
Totally agree, 3 makes sense!
LY
Lynelle
11 months ago
I see 3 distinct states in the diagram.
YO
Yolande
12 months ago
I’m leaning towards two states, but I’m a bit confused about how the authentication methods are represented.
SA
Sage
12 months ago
I feel like there could be four states, but I need to double-check how the transitions are defined in the diagram.
ER
Ernie
12 months ago
I think there are three states based on similar practice questions we did, but I might be mixing it up with another diagram.
TI
Tish
1 year ago
I remember we discussed state transition diagrams in class, but I'm not sure how to count the distinct states accurately.
JA
Janessa
1 year ago
Alright, let me think this through step-by-step. I need to identify all the unique states and count them.
LE
Lenny
1 year ago
I've got this! The states are clearly the circles, and I can see 3 distinct states in the diagram.
CH
Chaya
1 year ago
Wait, I'm a bit confused. Are the states just the circles, or do the arrows between them also count as states?
RI
Richelle
1 year ago
Okay, I see the different states for fingerprint and password authentication. I think I can work this out.
JU
Justine
1 year ago
Hmm, this looks like a state transition diagram. I'll need to carefully count the distinct states to answer this.
LA
Lavonne
1 year ago
Ugh, I'm a bit lost on this one. I'll have to review my notes and try to remember how to approach these types of questions.
AS
Ashleigh
2 years ago
Hmm, looks like we need to 'press' the right buttons to get the correct answer. I bet the developers had a 'finger' in designing this system.
BU
Buffy
2 years ago
Hold on, are we sure the 'Password OK' and 'Fingerprint OK' states are really distinct? I'm going to go with C) 3 just to be safe.
SA
Santos
2 years ago
I agree with you, I'll stick with C) 3 as well.
SH
Shenika
2 years ago
I see your point, but I still think they are separate states. I'm going with D) 4.
AL
Alva
2 years ago
I think they are distinct because they represent different authentication methods.
MI
Micheline
2 years ago
I'm not sure, I counted 4 distinct states. Maybe I missed something.
VI
Vilma
2 years ago
This is a no-brainer! Just count the number of boxes in the diagram - there are 4, so the answer is D) 4.
AN
Angelyn
2 years ago
Absolutely, it's a no-brainer. The answer is definitely D) 4.
FE
Felicia
2 years ago
So, we all agree that the correct answer is D) 4, right?
DA
Daniela
2 years ago
Yes, you're right. It's pretty straightforward to count the number of boxes.
NA
Nan
2 years ago
I think the answer is D) 4 because there are 4 distinct states in the diagram.
ET
Ettie
2 years ago
I agree with Eugene, I also counted 3 distinct states in the diagram.
AN
Annamae
2 years ago
I agree, the states of 'Fingerprint OK', 'Password OK', 'Fingerprint Not OK', and 'Password Not OK' are all visible.
CA
Carin
2 years ago
Yes, I agree. The states of 'Fingerprint OK', 'Password OK', 'Fingerprint Not OK', and 'Password Not OK' are all visible.
CA
Carin
2 years ago
I think there are 4 distinct states visible in the diagram.
LI
Linn
2 years ago
The diagram clearly shows 4 distinct states, so the answer must be D) 4.
MI
Micheal
2 years ago
Yes, it's definitely D) 4.
LE
Levi
2 years ago
So, we both think the answer is D) 4.
NG
Ngoc
2 years ago
I agree, the diagram clearly shows 4 distinct states.
RA
Raylene
2 years ago
I think the answer is D) 4.
EU
Eugene
2 years ago
I think the answer is C) 3 because I can see three distinct states in the diagram.