In the regular expression [^aeiou], what does the caret (^) inside the square brackets indicate?

The pattern matches only the vowels a, e, i, o, and u.

The pattern matches the start of a string followed by a vowel.

The pattern matches any character that is NOT a, e, i, o, or u.

The pattern matches the literal caret character.

In the regular expression ^192\.168\.1\.\d+$, what do the caret (^) and dollar sign ($) do?

They match the literal characters '^' and '$'.

They anchor the match to the start and end of the string, respectively.

They match zero or more of the preceding characters.

They indicate that the pattern is case-insensitive.

CiscoCertified CyberOps Associate

Domain 4Objective 10

4.10 Interpret Basic Regular Expressions 200-201 Practice Questions (Page 1)

Part of the 4.0 Network Intrusion Analysis domain, which accounts for 20% of the 200-201 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 1–2 from this objective — we provide 11 practice questions to prepare you well beyond it. (estimate)

11questions here

3free pages

7concepts

20%of the exam

Questions 1–5

1application · medium
An analyst is writing a regex to detect login attempts where the username field is exactly 'admin' and is followed by a space and then a timestamp. The log format is 'username=admin 2023-10-05 14:30:00'. Which regex would match only when 'admin' appears as a whole word and is followed by a space?
Select an answer first
2foundation · easy
In the regular expression [^aeiou], what does the caret (^) inside the square brackets indicate?
Select an answer first
3foundation · easy
Which quantifier matches exactly three occurrences of the preceding character?
Select an answer first
4foundation · easy
In the regular expression ^192\.168\.1\.\d+$, what do the caret (^) and dollar sign ($) do?
Select an answer first
5foundation · medium
A security analyst is writing a regex to match a suspicious user-agent string that contains a literal dot and a literal plus sign. The analyst wants to match the exact characters '.' and '+' in the log line. Which regex correctly matches the literal dot and plus sign?
Select an answer first

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4.10 Interpret Basic Regular Expressions 200-201 Practice Questions (Page 1)

Questions 1–5

An analyst is writing a regex to detect login attempts where the username field is exactly 'admin' and is followed by a space and then a timestamp. The log format is 'username=admin 2023-10-05 14:30:00'. Which regex would match only when 'admin' appears as a whole word and is followed by a space?

In the regular expression [^aeiou], what does the caret (^) inside the square brackets indicate?

Which quantifier matches exactly three occurrences of the preceding character?

In the regular expression ^192\.168\.1\.\d+$, what do the caret (^) and dollar sign ($) do?

A security analyst is writing a regex to match a suspicious user-agent string that contains a literal dot and a literal plus sign. The analyst wants to match the exact characters '.' and '+' in the log line. Which regex correctly matches the literal dot and plus sign?

Keep studying — 4.0 Network Intrusion Analysis