Logical Operations Exam CFR-210 Topic 3 Question 76 Discussion

Actual exam question for Logical Operations's CFR-210 exam

Question #: 76
Topic #: 3

An attacker has sent malicious macro-enabled Office files. Which of the following regular expressions will return a list of macro-enabled files?

A^.*?\.(?:xls|ppt|doc)m

B^.*(?:xls|ppt|doc)m.*

C^.*?\.(?:xls|ppt|doc)m$

D^.*(?:xls|ppt|doc)m

Show Suggested Answer

Suggested Answer: B

by Han at Sep 15, 2024, 02:56 AM

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Elouise

24 days ago

I'm going to have to go with Option A. It's the only one that properly uses the '?' to make the extension optional. Gotta love those non-greedy quantifiers!

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Desiree

28 days ago

Option D? Really? That's missing the file extension entirely. Might as well just search for 'xls', 'ppt', and 'doc' and hope for the best.

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Rosendo

9 days ago

C) ^.*?\\.(?:xls|ppt|doc)m$

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Albina

16 days ago

A) ^.*?\\.(?:xls|ppt|doc)m

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Stephaine

29 days ago

Hmm, Option B is a bit too broad for my liking. I'd rather have something a bit more specific to just the file extension.

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Cornell

17 days ago

I would go with Option C, it looks for the file extension at the end of the file name.

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Elenora

19 days ago

I agree, Option B seems too general and could potentially return false positives.

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Rosamond

23 days ago

I think Option A might be the best choice, it specifically looks for the file extensions.

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Jennie

1 months ago

I'm going with Option C. The $ at the end ensures we're only matching the file extension, not just any part of the filename.

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Rosendo

18 days ago

I see your point, but I still believe Option C is the best option. The $ at the end ensures we're only matching the file extension.

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Dahlia

19 days ago

I agree with User1, Option A seems to be the most accurate choice for identifying macro-enabled files.

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Elin

21 days ago

I think Option A is the correct one. It includes the file extensions and the m for macro-enabled files.

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Matthew

1 months ago

Can you explain why you think C is the correct answer?

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Sage

2 months ago

Option A looks good to me. It's a pretty comprehensive regex that should catch all those macro-enabled files.

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Jerry

5 days ago

User 4: Let's go with option A then, it seems like the best option.

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Kayleigh

8 days ago

User 3: I agree, option A looks like the most accurate choice.

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Yuette

28 days ago

Yeah, option A seems like it will capture all the macro-enabled files.

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Sabina

1 months ago

I think option A is the correct regex to use.

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Tess

2 months ago

I disagree, I believe the correct answer is C) ^.*?\\.(?:xls|ppt|doc)m$

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Matthew

2 months ago

I think the answer is A) ^.*?\\.(?:xls|ppt|doc)m

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