Carrier sensing is used in wireless networks to:
Correct Answer: B. Check whether the channel is busy before transmitting
MCQ Collection
Semester Exam MCQs
Semester Exam preparation MCQs for university and college students. This section includes subject-wise practice questions, answers, and explanations to help learners prepare for midterm exams, final exams, quizzes, and academic tests.
Which technology is suitable for short-range contactless payments and pairing?
Correct Answer: B. NFC
Which part supplies energy to an IoT node?
Correct Answer: B. Power unit
Which term describes the ability to add more devices without major redesign?
Correct Answer: B. Scalability
What does remote monitoring mean in IoT?
Correct Answer: C. Observing device or environment status from a distant location
Which topology has one central point communicating with multiple nodes?
Correct Answer: C. Star topology
Which metric indicates the strength of a received wireless signal?
Correct Answer: C. RSSI
Duty cycling in WSNs helps to:
Correct Answer: C. Save energy by switching radios between sleep and active states
Which of the following is a wireless sensor network node constraint?
Correct Answer: C. Limited memory, processing, and battery power
Which architecture view divides IoT communication into layers?
Correct Answer: C. Layer or stack architecture
Why are standards important in IoT?
Correct Answer: D. They support compatibility and reliable communication
Which wireless technology is commonly used for short-range personal area communication?
Correct Answer: D. Bluetooth