Introduction: The OSI Model, Physical Layer Flashcards
Systems…
Examples of a Network
Examples
The Internet, Cellular Networks, The Nervous System
Links
What is a network?
Definition
Links creating transport of communication
A standardised way of…
What are protocols?
Definition
A standardised way of actions & formatting data so devices can communicate
How does having a standard help…
List benefits of Layered Networks
Advantages
- Reduce Complexity
- Standardises Interfaces
- Interpoerable technology
- Accelerates evolution
- Simplifies teaching & learning
Application, presentation…
What model contains the 7 layers?
Model
The OSI Model (Open System Interconnection)
Application, transport…
What model contains 4 layers?
Model
TC/IP
What is the TCP/IP Model used for?
Type of Network
Internet
7,6,5,4,3,2,1…
Order the OSI Model correctly!
Ordering
Application
Presentation
Session
Transport
Network
Data Link
Physical
Sound’s like eminem…
What is Network Classification?
List of Network Types
PAN, LAN, CAN, MAN, WAN
Which layer is the Physical Layer?
Number
Number 1!
It’s in the name…
What is the physical layer?
Role in the OSI Model
Physical Medium for Data Transmission
What does it actually do??
What is the goal of the Physical Layer?
Purpose
Sending computer bits from one device to another along the network
All that dull hardware stuff…
What is transmission media of the Physical Layer?
Examples
Copper Cable
Optical Fibre cable
Wireless
What are the 4 functions of the Physical Layer?
- Topology
- Hardware Spec
- Encoding & Signalling
- Data Transmission
Multiple stars WTF??
List the 6 Topologies!
List
- Bus
- Ring
- Dual Ring
- Star
- ** ** Star
- Mesh
