1. Key concepts covered in Midterm III

2. Internetworking and IP Addressing
Concepts
Internet layer model
Different types of packets
What information is contained in header and payload?
IP, TCP/UDP, and Ethernet
Encapsulation relationship among different packets
IP address: what does an IP address stand for?
IPv4 classes
Subnet and classless addressing
Address mask: what for?
CIDR notation
Address for a network vs. address for a computer
Multi-homed computers

3. Data Forwarding and Routing
Concepts
IP: best effort delivery
Routing and routers
Routing: IP-address based
Routers
IP addresses
network segments
IP encapsulation
Header and payload

4. DHCP, NAT, IPv6 Concepts IPv6 DHCP Problems of IPv4 NAT Features
Purpose : what for?
Mechanism: how to get an IP automatically?
Problems of IPv4
NAT
What is it?
For what purpose?
How does it work?
IPv6
Features
Size
Advantages over IPv4

5. TCP and UDP Concepts TCP vs. UDP TCP features UDP features
Both at transport layer.
TCP features
Reliable delivery
Mechanisms: packet sequence, acknowledgement, retransmission
Connection-oriented: handshaking mechanisms
UDP features
Best effort
Connectionless
Message-oriented
Pseudo header: What is it? What for?

6. Other Technologies Concepts Network performance Security
Latency, throughput, and Jitter
Security
Common technologies: their applications