Chapter : Communication and Network

What is a device that provides central point for cables in network?

• Network card

• Cable modem

• Dial-up modem

• Hub

Below is an example of communication devices except :

• Radio Frequency Identification

• Router

• Switch

• Wireless modem

Which of the following are wireless transmission media?

• Cellular radio

• Microwave station

• Satellite

• Broadcast radio

What is the cellular radio?

• Use widely for mobile communications, specifically wireless modems and cell phones.

• Transmit in straight line with no obstructions

• A space station that receives microwave signals from an earth-based station

• Distribute radio signals over long and short distances

What is the microwave station?

• Use widely for mobile communications, specifically wireless modems and cell phones.

• Transmit in straight line with no obstructions

• A space station that receives microwave signals from an earth-based station

• Distribute radio signals over long and short distances

What is the satellite?

• Use widely for mobile communications, specifically wireless modems and cell phones.

• Transmit in straight line with no obstructions

• A space station that receives microwave signals from an earth-based station

• Distribute radio signals over long and short distances

What is the broadcast radio?

• Use widely for mobile communications, specifically wireless modems and cell phones.

• Transmit in straight line with no obstructions

• A space station that receives microwave signals from an earth-based station

• Distribute radio signals over long and short distances

Which of the following are the advantages of star topology?

• If hub or switch fails, the whole network cannot operate / function.

• Too much dependency on central device.

• Nodes can be added or removed without interrupted the network.

• One node fail, network still available

Which of the following are the disadvantages of star topology?

• If hub or switch fails, the whole network cannot operate / function.

• Too much dependency on central device.

• Nodes can be added or removed without interrupted the network.

• One node fail, network still available

What is an advantage of ring topology?

• Reduces chances of collision

• If one nodes fails, the entire network cannot operate / function.

• If hub or switch fails, the whole network cannot operate / function.

• One node fail, network still available