Oracle Exam 1Z0-149 Topic 4 Question 31 Discussion

Actual exam question for Oracle's 1Z0-149 exam

Question #: 31
Topic #: 4

[All 1Z0-149 Questions]

Which two are true about lexical units? (Choose two.)

ACharacter literals are case-sensitive.

BSpaces can be embedded in delimiters.

CIdentifiers include labels.

DA character literal with zero characters has the BOOLEAN value NULL.

EAll user-defined identifiers must start with an alphabet.

Show Suggested Answer

Suggested Answer: A, E

by Brynn at Jul 11, 2024, 04:09 PM

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Carey

4 months ago

C is correct, identifiers do include labels. But I'm still not sure about B. Sounds a bit far-fetched to me.

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Afton

4 months ago

I think B) is true because spaces can indeed be embedded in delimiters.

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Lazaro

4 months ago

Haha, 'spaces can be embedded in delimiters'? I wish! That would make my code look so much cleaner.

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Jame

5 months ago

D is just plain wrong. A character literal with zero characters can't have a BOOLEAN value. This question is tricky!

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Carmen

3 months ago

I got confused by D at first too, but after thinking about it, it doesn't make sense. A and E are definitely the correct options.

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Shakira

4 months ago

Yeah, I also picked A and E. It's important to pay attention to these details when working with lexical units.

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Janna

4 months ago

I think the correct options are A and E. Character literals are case-sensitive and user-defined identifiers must start with an alphabet.

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Gilbert

4 months ago

I agree, D is definitely incorrect. It doesn't make sense for a character literal with zero characters to have a BOOLEAN value.

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Julene

5 months ago

A and E are definitely true. Character literals are case-sensitive, and user-defined identifiers must start with an alphabet.

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Josphine

4 months ago

That's right, user-defined identifiers must start with an alphabet.

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Raelene

4 months ago

Yes, character literals are case-sensitive.

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Emeline

4 months ago

A and E are definitely true.

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Ressie

5 months ago

I'm not sure about D), but I think C) is definitely true.

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Marshall

5 months ago

I disagree, I believe B) and E) are the correct options.

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Mary

5 months ago

I think A) and C) are true.

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