Layers

Question 1

Application layer

Answer 1

• provides networking services to application

- turns data into websites

Question 2

Transport layer

Answer 2

• sets up communication between 2 devices
• splits data into packets
• checks if data packets are sent or received

Question 3

Internet Layer

Answer 3

• packages and unpackaged data
• adds IP address to data packets
• directs data packets between devices and handles traffic
• routes the packets (across the network);

Question 4

Link layer

Answer 4

• passed data over the physical network
• responsible for how data is sent as electrical signals over cables wireless and other hardware (NICs)
• interprets signals using device drivers

Question 5

What is MAC address filtering?

Answer 5

• Each device connected to the network has a (unique) reference ID/physical address (called the MAC Address);
  There is a list of allowed/denied addresses;
  The network device/router looks at the address of the device trying to
  connect (and blocks/allows appropriately);