NEXORA

In MySQL, which data type is best for storing text of variable length?

• CHAR

• VARCHAR

• TEXT

• STRING

Which layer of the IoT architecture is responsible for data processing and decision-making?

• Perception layer

• Network layer

• Application layer

• Middleware layer

What is the output of the following Python code?

x = [1, 2, 3]

print(x * 2)

• [1, 2, 3, 1, 2, 3]

• [2, 4, 6]

• Error

• 123123

The Boolean expression A’B + AB’ represents which gate?

• XOR

• XNOR

• NAND

• NOR

What is the default subnet mask for a Class C IPv4 address?

• 255.255.0.0

• 255.255.255.0

• 255.0.0.0

• 255.255.255.255

In IoT systems, which addressing method is commonly used to identify individual devices on a network?

• MAC address

• DNS

• URL

• HTTP ID

What is the output of the following?

print([] or [0])

• []

• [0]

• 0

• None

Which SQL statement is used to remove duplicate rows from the result set?

• DISTINCT

• UNIQUE

• REMOVE

• CLEAN

Which layer of the OSI model is responsible for encryption and compression?

• Application

• Presentation

• Session

• Transport

Which of these is NOT a characteristic of IoT devices?

• Low power consumption

• Always-on internet connectivity

• Ability to operate completely offline indefinitely

• Data exchange capability