IT 273 Unit 2

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