4 March 2015 - CCNA Chap 4 Review 4.1

Chapter 4 - Network Access  4.1 Physical Layer Protocols

Review

4.0.1.1 -

• Which 2 layers of the OSI model are so closely tied that the TCP/IP combines them into one layer?

•  What is the role of the data link layer on the sending device?  What does it do on the receiving device?

4.1.1
Terms related to the physical or wireless connection to a network:  WAP. ISR, LAN, NIC, WLAN

4.1.2
The OSI physical layer provides the means to transport the bits that make up a data link later frame across the network media.

What is the process that data undergoes from source node to destination?
Review the PDU encapsulation process

What are the 3 basic forms of network media?

4.1.3

The 3 functional areas that the physical layer addresses: Physical components, Encoding and Signaling

 

Define Encoding

Signaling:  

• What is the difference between Asynchronous and Synchronous signal transmission?
• What are the 3 commonly used modulation techniques?
•  

 Define Bandwidth

 

How does throughput differ from goodput?
What is latency?

4.1.3.4 What role do standards play in defining media?

DO:  4.1.3.5