Cisco
200-201 · Question #4
Which regex matches only on all lowercase letters?
The correct answer is A. [a-z]+. [a-z] represents a character class that matches any lowercase letter from 'a' to 'z'. The '+' indicates that the pattern [a-z] should occur one or more times consecutively.
Submitted by klara.se· Mar 6, 2026Security Concepts
Question
Which regex matches only on all lowercase letters?
Options
- A[a-z]+
- B[^a-z]+
- Ca-z+
- Da*z+
How the community answered
(58 responses)- A93% (54)
- B2% (1)
- C3% (2)
- D2% (1)
Explanation
[a-z] represents a character class that matches any lowercase letter from 'a' to 'z'. The '+' indicates that the pattern [a-z] should occur one or more times consecutively.
Topics
#regular expressions#pattern matching
Community Discussion
No community discussion yet for this question.