---
# System prepended metadata

title: Computer Network 計算機網路
tags: [NTNU]

---

---
tags: NTNU
title: Computer Network 計算機網路
---

# Computer Network

## Score
- Homework 30%
- Midterm 35%
- Final exam 35%
 
## Syllabus

### Introduction

#### The Relationship of Services to Protocol

#### Reference Model

- OSI reference model
    - Principles for the seven layers
        - Layers created for different abstractions
        - Each layer performs well-defined function
        - Function of layer chosen with definition of international standard protocols in mind
        - Minimize information flow across interfaces between boundaries
        - Number of layers optimum
    - Physical Layer
        - Deal with mechanical, electrical, timing interfaces, and physical transmission medium.
    - Data link Layer
        - Farming: 訊號切割和分段
        - Flow control: 避免把目的記憶體灌爆
        - Error control: 發生錯誤時，修正錯誤
        - Medium access contorl(MAC): 避免在多點的網路通訊中資料不會互相衝突
    - Network Layer
    - Transport Layer
        - A true end-to-end layer
    - Session Layer
    - Presentation Layer
    - Application Layer

- TCP/IP reference model
    - Link layer(Actually, an interface specification)
        - in Data link layer
        - DSL
        - SONET
        - 802.11
        - Ethe
	- Internet layer
	    - in Network layer
	    - IP
	    - ICMP
	        - ping
	- Transport layer
	    - Transport layer
	    - TCP
	    - UDP
	- Application layer
	    - in Application layer
	    - HTTP
	    - SMTP
	    - RTP
	    - DNS
- Comparision of OSI and TCP/IP
    Concepts central to OSI model
    - Services
    - Interfaces
    - Protocols
- Critique of OSI model and protocols
    - Bad timing
    - Bad technology
    - Bad implementations
    - Bad politics
- Critique of TCP/IP model

### Selected topics in the physical layer

### [Selected topics in the data link layer]()

### [The Network layer]()