OSI Models

Question 1

Applications software, network applications. Anything you can see with your eyeballs like web browsers and email.

Answer 1

Application - Layer 7

Question 2

Data conversion utilities. Protocol conversion, data translation. Data encryption/decryption

Answer 2

Presentation - Layer 6

Question 3

Network operating system. Establishes, manages, & terminates sessions

Answer 3

Session - Layer 5

Question 4

Network operating system. Ensures error free packets.

Answer 4

Transport - Layer 4

Question 5

Router, layer 3 switches. Providers routing decisions. NAT, PAT

Answer 5

Network - Layer 3

Question 6

Switched, NIC, Token Ring, Frame Relay, Bridge. Provides for flow of data. NIC Functions at this layer. Bits pass over physical layer between devices on a LAN (collision domain)

Answer 6

Data Link - Layer 2

Question 7

802.11, Repeater, Modem, Bluetooth, Ethernet, hubs, Network Cabling, Wi-Fi. Signals & Media

Answer 7

Physical - Layer 1