CPENT Iot And OT Exploitation Practice Question
A tester is conducting a physical security and RF assessment against a wireless building automation system operating at 433 MHz. The tester wants to capture and replay the radio frequency signal emitted by a key fob to unlock a gate. Which hardware tool is specifically designed for software-defined radio (SDR) signal capture and analysis in this frequency range?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
HackRF One / RTL-SDR
HackRF One, RTL-SDR, and similar software-defined radios are used for capturing RF signals. Specifically, devices like RTL-SDR or HackRF paired with GNU Radio or Universal Radio Hacker (URH) cover the 433 MHz band.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
JTAGulator
Why it's wrong here
The JTAGulator assists in identifying On-Chip Debug (OCD) interfaces on printed circuit boards.
- ✗
Bus Pirate
Why it's wrong here
The Bus Pirate is a hardware troubleshooting tool for serial protocols like I2C, SPI, and UART, not wireless RF.
- ✗
Rubber Ducky
Why it's wrong here
The USB Rubber Ducky is a keystroke injection tool disguised as a USB flash drive.
- ✓
HackRF One / RTL-SDR
Why this is correct
Software-defined radios like HackRF One and RTL-SDR tune into sub-GHz frequencies (such as 433 MHz) to capture, demodulate, and replay RF signals.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official EC-Council exam blueprint
This CPENT practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CPENT exam.