PreUPS2F6

Which is Boolean expression

• 
• 
• X = (A+B) (Ā+C)

Write a Boolean expression.

• 
• A' . B'

• A'+B

• A' +B'

Draw a logic circuit for this Boolean expression: X = (A+B) (Ā+C)

• 
• 
• 

Find the output for the Boolean expression R + S. T, if R = 0, S = 0 and T = 1.

• 1

• 0

Define the concept of network

• a collection of computers and devices connected together

• Sharing hardware or Reduced Hardware Costs

• a collection of computers and devices connected together via communications devices and transmission media

• Sharing data, information and resources

Which is not example of communication network devices.

• modem

• Wireless Access Point

• fiber optic

• Switch/Hub

Example of communication device for wireless connection

• Router

• Wireless Access Point

• Coaxial cable

• DSL Modem

Types of transmission media.

• Wired transmission media

• twisted pair

• Wireless Modem

• Coaxial cable

Types of network architecture.

• clients server

• server

• network architecture

• pc and server

If one computer fails, does not affect the

functioning of other computers in the

network.

• client server

• peer to peer

• client-server network

• pc to pc