Term
| Define Layer 1: Name, Desc, Measurement |
|
Definition
Layer 1 - Physical Layer, The wires and physical connections (jacks, panels, hub) on a network. Deals with conversion from analogue to digital signals.
Measurement - Bits |
|
|
Term
| Define Layer 2: Name, Desc, Measurement |
|
Definition
| Data Link - This establishes the physical address of the host (Mac Address), switches mainly operate on level 2. Measurement - Frames |
|
|
Term
| Define Layer 3: Name, Desc, Measurement |
|
Definition
| Network - Establishes path to the IP address and how to get there. Measurement - Packets |
|
|
Term
| Define Layer 4: Name, Desc, What does Layer 4 also handle, what 2 ways can layer 4 send data? |
|
Definition
| Transport - Ensures an error free sending + Receiving of a message. Ports, UDP + TCP |
|
|
Term
| Define TCP, advantage, disadvantage, what orientated is it |
|
Definition
| Connection orientated - Reliable protocol for sending data. Packets broken up and numbered so can be identified if one is missing and can be requested. |
|
|
Term
| How does TCP establish a connection |
|
Definition
| 3 way handshake between hosts |
|
|
Term
|
Definition
| File Transfer, Emails etc |
|
|
Term
| Define UDP, Advantage disadvantage, what orientated is it. |
|
Definition
| Connectionless orientated - Lost packets arent resent to avoid disruption of speed in data. Quicker but less reliable |
|
|
Term
|
Definition
|
|
Term
| Define Layer 6: Name, Desc and what also occurs on this level? |
|
Definition
| Presentation - Translates and formats data into a universal well known formats. Encryption also occurs |
|
|
Term
| Define Layer 7: Name, Desc + Example |
|
Definition
| Layer 7 - Application layer, the end user protocols (HTTP) |
|
|
Term
| How many layers does the TCP (In The Name!) model have? Name each one |
|
Definition
| 3 - Application Layer, Transport Layer, Physical Layer |
|
|
Term
| What does the application layer do in the TCP model? |
|
Definition
| Provides apps with standardised data exchange (common protocols) |
|
|
Term
| What does the transport layer do in the TCP model? |
|
Definition
| Maintains end to end communication across the network |
|
|
Term
| What does the physical layer do in the TCP model? |
|
Definition
| Protocols that interconnect hosts on a network. |
|
|
