A system where an address is an abstraction, not a physical location (commonly referred as IP)
Logical Addressing
How do we forward/route data across our network?? (Hint: 3 main way)
- Packet switching (routing)
- Circuit switching
- Message switching
Data is divided into packets then forwarded
Packet switching
Dedicated communication link is established between two devices
Circuit switching
Data is divided into messages which may be stored and then forwarded
Message switching
Most networks use __________ switching.
A. Packet
B. Circuit
C. Message
A. Packet
Manually configured as a static route or dynamically through a routing protocol
Route Discovery and Selection
What is the following an example of?
- GPS mapping to find fastest destination
Route Discovery and Selection
Augment Layer 2 connection services to improve reliability
Connection Services
What are the following examples of?
- Flow Control
Packet Reordering
Connection Services
Sends error messages and operational information to an IP destination
Internet Control Message Protocol
What hardware is at this level?
Routers, Multi-layer switches, IPv4, IPv6, ICMP
True or False?
Normal switches are located at level 2.
False
True or False?
Multi-layer switches are located at level 2.
True
