Computer and Control Systems

Which component in a computer network is responsible for directing data packets between different networks?

• Router

• Network Interface Card

• Modem

• Hub

What is the primary function of a network switch?

• To convert digital signals to analog

• To connect multiple devices in a network

• To provide wireless connectivity

• To protect against viruses

In Boolean logic, what is the result of AND gate when both inputs are TRUE?

• Sometimes TRUE

• Always FALSE

• TRUE

• Undefined

Which CAD command is used to create perfectly horizontal or vertical lines?

• Fillet

• Ortho

• Array

• Trim

In a PLC system, which component would be considered an input device?

• Ultrasonic sensor

• Computer memory

• Motor

• Processor

Which logic gate produces an output of 1 only when inputs are different?

• NAND

• NOR

• XOR

• AND

Which component of a PLC system stores the user program?

• CPU

• Input module

• Memory unit

• Output card

What is the result of a NOR gate when both inputs are FALSE?

• FALSE

• Undefined

• Sometimes TRUE

• TRUE

In CAD, what does the command "ARRAY" do?

• Deletes objects

• Creates multiple copies in a pattern

• Measures distance

• Draws circles

What type of memory in a PLC retains data even when power is lost?

• ROM

• Cache

• RAM

• Virtual memory