Hey everyone!! Below I am posting 3 questions that I and another classmate have been arguing over. They are nothing difficult just textbook questions. I told my friend I would post these with two options to the answer to see what people respond with. So just from reading them and NO LOOKING UP THE ANSWER!!! OFF THE TOP OF YOUR HEAD!!!!

Question #1
When creating a decision table, you must determine how many possible Boolean value combinations exist for the conditions. If there are two conditions, ______ combinations will exist.
A.2
B.4

Question # 2
When merging two files, the condition that terminates the main loop for the program is_______
A. when the first file reaches eof
B. when both files reach eof

Question # 3
The main purpose of UML diagram is_____
A.To facilitate clear communication
B.To provide a blueprint for the system
My answers to the Question would be:
B
B
B

My friends answers are:
B
A
A
What are your answers? Have fun!! Also thinking of maybe posting 3 questions once a week just for fun.Please post a Comment on where I should do that, in Comp-Science forum, or Student Lounge, Etc.. Thanks everyone!!!

1.)
If by condition you mean

1 2

then the answer is B 4

0 0
0 1
1 0
1 1

Truth tables


2.)

I'm thinking B, but I'd need more info.

3.)

Could be either. UML is supposed to give the reader the "idea" of the system which entails clear communication. However, with the info given I say B.


BBB

1) Ditto what KYA said.

2) How are you supposed to merge 2 files if you don't read all the way through both of them? That's the only way to do it in the general case. The only way A could be correct is if you make a number of assumptions about exactly how the merge is going to be done.

3) All of the above. Or none of the above, depending on how you look at it. In UML Distilled, Martin Fowler writes that there are 3 ways to use UML: sketch, blueprint, and programming language. He considers the use a sketch, i.e. a communication tool, to be by far the most common, but the other 2 are perfectly valid as well. So really, there is no objective answer to this question. The purpose of a UML diagram depends on why you drew it in the first place.

for 2) i would say B if the files were in sorted order

In regards to number 2, it really depends on how you're merging them.

Answer for Question #1 = B

Answer for Question #2 = B

Answer for Question #3 = both A and B.

1. B

2. Depends on how you're merging the files. If you're merging them into the 3rd file, then the answer is B. If you're simply inserting the 1st file at the end of the 2nd file then the answer is A.

3. Both answers are good.

B
B
B