Data Communication Systems - Pre- assessment

____________________ allow people to connect wirelessly to the Internet from home, work, school and in many public locations.

• Wireless Internet Access points

• Wired Internet Access points

• Router

• Cybercafe

In a communication system, which among the following originate and accept messages in the form of data, information, and/or instructions?

• Communication channels

• Sending and receiving devices

• Connection devices

• Data transmission specifications

Which physical connection is the fastest?

• Twisted pair

• Coaxial cable

• Fiber-optic cable

• Microwave

What is a network?

• 1 computer

• 2 or more computers connected

• a film

• a server

Materials that carrying communications signals known as a ?

• Sending devices

• Transmission Media

• Communications Devices

• Networks

Transmission media can be in a form of ______A_______ or ______B______.

• A: Wired
  B: Wireless
• A: Physical
  B: Invisible
• A: Copper Wire
  B: Radio Signal
• A: USB cable
  B: WiFi

What is data communication?

• Transfer of data from one point to the next.

• Transfer of electronic data from one point to the next over a communication medium.

• sending information

• none of the above

collection of two or more computers joined together through communication media, to share information is?

• Computer network

• Wired network

• half duplex

• full duplex

Devices using bluetooth to transfer data must be placed no more than ________meters apart.

• 100
• 50
• 10
• 30