MCQs on IoT and Protocols

Which of the following best defines IoT?

• A network of interconnected devices that communicate and exchange data

• A new type of internet

• A type of wireless communication protocol

• None of the above

Which communication protocol is widely used in IoT for low-power, short-range communication?

• Bluetooth

• Zigbee

• Wi-Fi

• All of the above

What is the main focus of IEEE 802.15.4?

• High-speed internet access

• Low-power wireless communication

• High-bandwidth data transfer

• Satellite communication

Which layer of the OSI model does IEEE 802.15.4 primarily operate at?

• Application Layer

• Network Layer

• Physical and MAC Layer

• Transport Layer

What is the maximum data rate of IEEE 802.15.4?

• 250 kbps

• 1 Mbps

• 10 Mbps

• 100 kbps

LoRaWAN operates in which frequency band?

• 2.4 GHz

• 868 MHz (Europe) and 915 MHz (USA)

• 5 GHz

• 1.8 GHz

What is the primary advantage of LoRaWAN?

• High data rate

• Long-range and low power consumption

• High-speed communication

• Short-range connectivity

Which of the following is a key feature of LoRa modulation?

• Spread spectrum

• Frequency hopping

• Direct Sequence Spread Spectrum (DSSS)

• Pulse Code Modulation

6LoWPAN stands for:

• IPv6 over Low-Power Wireless Personal Area Networks

• Internet Protocol Version 6 over Wireless Networks

• Low-Power Wide Area Network

• None of the above

Which protocol is used in 6LoWPAN for routing?

• RPL (Routing Protocol for Low-Power and Lossy Networks)

• BGP

• OSPF

• RIP