IoT revision Y

ls -al

Refer to the code snippet above. Which one of the following statements best describe the structure shown?

• The argument is Is and the flag is -al.

• The flag is Is and the argument is -al.

• The flag is Is and the command is -al.

• The command is Is and the flag is -al.

The DHT11 sensor is made up of

• ultrasonic and thermistor.

• resistive humidity sensor and TMP36.

• capacitive humidity sensor and thermistor.

• capacitive humidity sensor and thermocouple.

A device which consumes 200 mA is connected with a battery that has an 8000 mAh battery capacity. Calculate the battery life.

• 10h.

• 20h.

• 40h.

• 80h.

An object is detected by an ultrasonic sensor. The time taken from the transmission to reception of reflected waves is 900 µs. Given the speed of sound is 0.0343 cm/µs, calculate the distance of the object.

• 2.01 cm

• 10.0842 cm

• 15.435 cm

• 30.87 cm

Which one of the following is a network media?

• ONT

• RJ45

• LoRa

• Radio Waves

Which loT network protocol is described as low power, low data rate and close proximity?

• IP

• TCP

• WiFi

• Zig bee

Refer to the Table. Calculate the sum of "Detected Motion" in day 2.

• 1

• 2

• 4

• 5

Refer to the Table. Calculate the average temperature of sensor Temp1.

• 10

• 15

• 20

• 25