Worked Example A-B

Rosie is choosing a new mobile phone. Some of the phones use different network bands. Describe what is meant by network band. 

Mobile phones in different areas of the world use different frequencies or network bands. If uses want to use their mobile phones abroad they will have to have a dual or triband or to cover the whole world a quad-band phone. 

John is concerned about data security. State two ways which he can protect the information on his phone.

Possible Answers: Hide phone  Set a pin Lock the sim card Record the unique IMEI number restrict Bluetooth usage.  Encrypt Data Backup Data Switch roaming off abroad

Example A-B

Example E-D