Worksheet 1 Communication technologies

Task 1: The diagram shows how an ad hoc network can be set up. (a) What does the diagram illustrate?

• The setup of a wired network

• The setup of an ad hoc network

• The setup of a cellular network

• The setup of a satellite network

What will happen to the performance of the laptop when the second laptop is added to make the ad hoc network? Why will this happen?

• The performance will improve due to increased resources.

• The performance will degrade due to network overhead.

• The performance will remain the same as it is independent of network changes.

• The performance will improve due to better connectivity.

Task 2: Ellie is working on her laptop on the train. She will be editing documents in the cloud. She needs to connect to the Internet and has the following choice of Wi-Fi networks available. Complete the table below to show how secure each of the available networks are. Place one tick in each row to show the security level. Network name: KD-Broadband, Thomas Phone, Kalib SmartPhone, 4G Hotspot 3C5D, Coast Trains, Office Reception. Security level: No security, Weak security, Strong security.

• Complete the table to show how secure each of the available Wi-Fi networks are.

• List the Wi-Fi networks available and their security levels.

• Explain why Ellie needs to connect to the Internet.

• Describe the process of editing documents in the cloud.

How can she make this a secure connection?

• By using a VPN

• By ignoring security protocols

• By sharing passwords openly

• By disabling encryption

Other than security, what three problems that Ellie could experience when using the train’s Wi-Fi system?

• Slow internet speed, connectivity issues, limited bandwidth

• High cost, limited access, data breaches

• Device compatibility, signal interference, high latency

• Privacy concerns, data limits, unreliable connection

There are four different methods in which computers are currently able to connect to the Internet. Two of these methods use cables and two do not. What are the four different methods?

• Ethernet, Fiber Optic, Wi-Fi, Cellular

• DSL, Dial-up, Satellite, Bluetooth

• Cable Modem, Wi-Fi, Satellite, Cellular

• Ethernet, DSL, Wi-Fi, Bluetooth

A large motocross event is going to take place on a beach which already has limited mobile connections. The organisers are expecting tens of thousands of spectators to come to the three-day event. Many visitors will want to take video and photos to upload to social media. In addition, it is important that the mobile networks are working well, in case calls need to be made to emergency services. How do you propose the event organisers solve this problem?

• Increase the number of mobile towers temporarily.

• Provide free Wi-Fi to all visitors.

• Limit the number of spectators.

• Encourage visitors to use offline modes.

(a) Which mobile network is connecting rural communities with 4G?

• Network A

• Network B

• Network C

• Network D

The Internet before these communities had faster speeds was:

• slow and limited

• fast and efficient

• non-existent

• only for government use

How do rural communities install and access mobile Internet?

• By using satellite internet services

• Through fiber optic cables

• By relying on urban internet providers

• Using traditional dial-up connections