Solved - O Level IoT Paper January 2026
LED से प्रकाश कब निकलता है?
When is light emitted from the LED?
[A] When current passes through it
[B] When voltage is zero
[C] When it is disconnected
[D] When it is cooled
Correct Answer : When current passes through it
AVR output voltage को monitor करने के लिए ________ का उपयोग करता है।
An AVR uses a ________ to monitor the output voltage.
[A] Feedback loop
[B] Sensor only
[C] Microcontroller
[D] Transformer
Correct Answer : Feedback loop
Car को mobile से connect करने पर यह network किस प्रकार का है?
Car is connected to a mobile. This type of network is called?
[A] LAN
[B] WAN
[C] BAN
[D] PAN
Correct Answer : WAN
C language में कौन-सा reserved keyword है जो बताता है कि variable का value अचानक बदल सकता है?
Which of the following is a reserved keyword in C used to declare that a variable's value may change unexpectedly?
[A] Kilo
[B] Volatile
[C] Kb
[D] X
Correct Answer : Volatile
Piezo Sensor किस पर निर्भर करता है?
Piezo Sensor depends on?
[A] Temperature
[B] Pressure or Mechanical Stress
[C] Light
[D] Sound
Correct Answer : Pressure or Mechanical Stress
Array का पहला element कौन सा होता है?
Which is the first element of an array?
[A] array[0]
[B] array[1]
[C] array[2]
[D] array[3]
Correct Answer : array[0]
Famous IoT security attack कौन सा है?
Which is a famous IoT security attack?
[A] Stuxnet
[B] Mirai botnet
[C] WannaCry
[D] Heartbleed
Correct Answer : Mirai botnet
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