Oracle Exam 1Z0-149 Topic 2 Question 23 Discussion

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

Question #: 23
Topic #: 2

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.

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Suggested Answer: A, E

by Meaghan at Apr 12, 2024, 06:09 AM

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7 days ago

I think C is true. Identifiers do include labels, right? At least that's what I remember from the lecture.

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9 days ago

But I'm not sure about B. Can you really embed spaces in delimiters? That seems a bit odd to me.

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10 days ago

Okay, let's see. Character literals are definitely case-sensitive, so A is true.

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11 days ago

Hmm, I think I might know the answer. Let me work through this step-by-step.

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13 days ago

Yeah, I agree. These are some pretty subtle distinctions. I'm going to have to think carefully about this one.

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15 days ago

I'm not sure about this question. The concepts of lexical units seem a bit tricky to me.

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