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Exam PT0-003 Topic 3 Question 233 Discussion

Actual exam question for CompTIA's PT0-003 exam
Question #: 233
Topic #: 3
A penetration tester writes a Bash script to automate the execution of a ping command on a Class C network:
bash
for var in -MISSING TEXT-
do
ping -c 1 192.168.10.$var
done
Which of the following pieces of code should the penetration tester use in place of the -MISSING TEXT- placeholder?

Suggested Answer: B Vote an answer

Correct Syntax for a Range Loop in Bash:
The seq command generates a sequence of numbers in a specified range, which is ideal for iterating over IP addresses in a Class C subnet (1-254).
Example: seq 1 254 will output numbers 1, 2, ..., 254 sequentially.
Explanation of Other Options:
A (crunch): The crunch command is used for wordlist generation and is unrelated to looping in Bash.
C (echo 1-254): This would output "1-254" as a string instead of generating a numeric range.
D ({1.-254}): This is incorrect Bash syntax and would result in a script error.
Final Script:
bash
for var in $(seq 1 254)
do
ping -c 1 192.168.10.$var
done
CompTIA Pentest+ Reference:
Domain 4.0 (Penetration Testing Tools)
Bash Scripting and Automation

by Harvey at Jun 22, 2026, 08:13 PM

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