OSI Model

Question 1

Application

Answer 1

Layer 7: Provides application-level services where users communicate with the computer. Think about low-level protocols like POP3, IMAP, SMTP, etc.

Question 2

Presentation

Answer 2

Layer 6: Formats the data to be exchanged and secures that data with proper encryption. Data Formatting(Compatibility between devices) and Encryption. GIF, JPEG, and PNG. Scripting Languages are also operating at layer 6.

Question 3

Session

Answer 3

Layer 5: Keeps conversations separate to prevent intermingling of data.

Question 4

Transport

Answer 4

Layer 4: Manages network traffic between hosts and end systems to ensure complete data transfers.

Question 5

Network

Answer 5

Layer 3: Forwards traffic (routing) with logical address.

Question 6

Data-Link

Answer 6

Layer 2: Packages data into frames, and transmits on a network.

Question 7

Physical

Answer 7

Layer 1: Where transmission of bits occur across a network. Zeros and Ones. Multiplexing and transmission (Cables and WiFi)