WorksheetsIoTE2
Total questions: 20
Worksheet time: 10mins
What is the primary function of a network protocol in IoT?
To ensure physical connectivity between devices
To provide power to IoT devices
To establish communication rules and standards for data exchange
To store and process IoT data
Which of the following is a common network protocol used in IoT?
TCP/IP
MQTT
HTTP
All of the above
What is the typical range of a PAN?
100 meters
1 kilometer
10 meters
100 kilometers
Which of the following devices can be connected to a PAN?
Smartphones
Laptops
Printers
All of the above
What is the primary function of a WAN?
To connect devices within a single building.
To connect devices across long distances.
To provide high-speed internet access.
To create a secure wireless network.
What is the role of a router in a WAN?
To amplify network signals
To provide wireless connectivity
To forward data packets between networks
To filter network traffic
What is a Local Area Network (LAN)?
A network that connects devices over a wide geographic area.
A network that connects devices within a personal area.
A network that connects devices within a limited area, such as a home, office, or school.
A network that connects devices using satellite technology.
Which of the following is a common LAN transmission medium?
Coaxial cable
Fiber optic cable
Twisted-pair cable
All of the above
Which of the following is a key feature of Zigbee?
High data rate
Long range
Low power consumption
High security
Which of the following applications is well-suited for Zigbee technology?
Long-range sensor networks
High-speed data transfer
Home automation
Cellular communication
Which of the following is a key difference between LAN and WAN?
LAN covers a larger geographical area than WAN.
WAN is faster than LAN.
LAN is typically privately owned, while WAN is often shared.
WAN uses only wired connections, while LAN can use both wired and wireless connections.
Which transmission medium is best suited for high-speed data transfer in IoT networks?
Wi-Fi
Fiber optic cable
Twisted-pair cable
Coaxial cable
What is the main disadvantage of using wireless transmission in IoT networks?
High cost
Limited bandwidth
Complex installation
Security vulnerabilities
What is the difference between a wired and wireless network in IoT?
Wired networks are more secure than wireless networks.
Wireless networks have higher bandwidth than wired networks.
Wired networks are more reliable and less susceptible to interference.
Wireless networks are more expensive to deploy than wired networks.
What is the primary weakness of WEP security protocol?
Weak encryption keys
Static encryption keys
Lack of authentication
Low data transfer rates
How does WPA improve upon WEP's security?
By using stronger encryption algorithms
By implementing dynamic key generation
By adding message integrity checks
All of the above
Why is WEP considered insecure?
It is too complex to implement.
It is not compatible with modern devices.
Its encryption keys can be easily cracked.
It is too slow for modern network speeds.
How does a potentiometer work?
By changing the length of the resistive elementBy changing the cross-sectional area of the resistive element
By changing the effective resistance between the wiper and one of the end terminals
By changing the cross-sectional area of the resistive element
By changing the material of the resistive element
How does a photoresistor work?
By emitting light
By absorbing light
By changing its resistance based on the amount of light it receives
By generating electricity from light
In a circuit with a photoresistor and a potentiometer connected to an Arduino, what would happen if the ambient light intensity increases while the potentiometer is set to a high resistance value?
The LED connected to the circuit would become brighter.
The LED connected to the circuit would become dimmer.
The LED brightness would remain unchanged.
The Arduino would stop functioning.
