OSI Model

Question 1

OSI Model:

Layer 1

Answer 1

Physical Layer

Signaling, cabling, connectors (cable, NIC, hub)

Question 2

OSI Model:

Layer 2

Answer 2

Data Link Layer

The switching layer (frame, MAC address, EUI-48, EUI-64, switch)

Question 3

OSI Model:

Layer 3

Answer 3

Network Layer

The routing layer (IP address, router, packet)

Question 4

OSI Model:

Layer 4

Answer 4

Transport Layer

The “post office” layer (TCP segment, UDP datagram)

Question 5

OSI Model:

Layer 5

Answer 5

Session Layer

Communication between devices (Control protocols, tunneling protocols)

Question 6

OSI Model:

Layer 6

Answer 6

Presentation Layer

Encoding and encryption (SSL/TLS)

Question 7

OSI Model:

Layer 7

Answer 7

Application Layer

The layer we see (e.g. Google Mail, Twitter, Facebook)

Question 8

OSI Model:

OSI Model

Answer 8

1. Physical Layer
2. Data Link Layer
3. NetworkLayer
4. Transport Layer
5. Session Layer
6. Presentation Layer
7. Application Layer