Key Points:

No.1 Four basic functions for Applications:

Data storage

Data access

Application logic

Presentation logic

No.2 Five Application Architectures:

Host-based

Client-based

Client-Server

Multitier

Peer-to-peer

The two in bold are more important, especially peer-to-peer.

Cloud Computing

No.3 Components of A Network

Applications

Messages

Protocols

Sending/Originating Devices

Communication Channels

Communication Devices

Receiving (Destination) Devices

No.4 Network Standards

Types of Standards

Standards Bodies

Definition of Standards

No.5 Protocols

Format of PDUs

Protocol Characteristics

Reliable Protocols

Connection Oriented Protocols

No.6 Network Layering/the Five-Layer Model (very important!!!)

Application Layer

Transport Layer

Internet Layer

Data Link Layer

Physical Layer

Functions and protocols for each and their relationship

Encapsulation and decapsulation

No.7 Types of Networks

LANs

WLANs

DANs

WANs

VPNs

No.8 Network Security

CIA

Dialog Attacks

Penetration Attacks