Wireless and Cellular Data Networks Flashcards
What two forms of wireless connection do mobile devices have?
Wi-Fi and Cellular.
What do Cellular connections require?
Cellular towers and satellites to create a mesh for global coverage.
What does every mobile device have? What does it do?
A 15-digit number known as an International Mobile Equipment Identity (IMEI).
It identifies the device to a carriers network.
Where do IMEI come from? Wher can the IMEI be found?
They come form the Global System for Mobile Communications (GSM).
They can be found in the configuration settings, or a battery compartment.
How is the user of a mobile device Identified?
Using a International Mobile Subscriber Identity (IMSI).
This is usually stored on either the SIM card or the phone itself.
What advantages do Wi-Fi connections have over cellular?
They use less power.
To this end, it is popular for places to offfer free Wi-Fi.
What should you do to secure networks?
Use the highest security framewokr possible. WPA2 in this context.
Never send login information in clear, unencrypted text.
Use a secure VPN connection.
What is an SSID?
A Service Set Identifier. It is put simply the name of the network.
What are the ceullular communication standards?
1G 2G 3G 4G 5G
When was 1G introduced?
In the 1980s
When was 2G/3G introduced?
In the 1990s
When was 4G introduced?
The late 2000s
When was 5G introduced?
2019.
What does Airplane Mode do?
It disables communications.
It turns of cullular, Wi-Fi and Bluetooth radios.
What is a hotspot?
A physical location where one can connect to the internet using wi-fi. Mobile devices can be configured as hotspots.
