Unit 2
IT 273 Networking Concepts
Answer and provide a brief explanation to the following questions:
Which layer contains the Media Access Control (MAC) address?
The Data Link layer contains the Media Access Control addresses for devices connected to a network.
Network
Transport
Data Link
Physical
The Network layer is where logical addresses are utilized.
Presentation
Session
Data Link
Network
Data at the Physical layer is referred to as Bits.
Frames
Bits
Packets
Segments
Encryption happens at the Presentation layer of the OSI model.
Application
Presentation
Session
Transport
The OSI reference model was created in 1983.
1994
1990
1981
1983
| OSI Model Layers | Mnemonic | Protocols | Data labels |
|---|---|---|---|
| 7. Application | Away | HTTP, FTP, SMTP | |
| 6. Presentation | Pizza | ||
| 5. Session | Sausage | ||
| 4. Transport | Throw | TCP, UDP | Segments |
| 3. Network | Not | ICMP, Internet Protocol | Packets |
| 2. Data Link | Do | Ethernet, HDLC, LLDP | Frames |
| 1. Physical | Please | Bits |