OSI Model (Layers)

Question 1

Layer 1

Answer 1

Physical Layer (Bit, Symbol)

Question 2

Layer 2

Answer 2

Data Link Layer (Frame)

Question 3

Layer 3

Answer 3

Network Layer (Packet)

Question 4

Layer 4

Answer 4

Transport Layer (Segment, Datagram)

Question 5

Layer 5

Answer 5

Session Layer (Data)

Question 6

Layer 6

Answer 6

Presentation Layer (Data)

Question 7

Layer 7

Answer 7

Application Layer (Data)

Question 8

Physical Layer

Answer 8

Layer 1 (Bit, Symbol)

Transmission and reception of raw bit streams over a physical medium.

Question 9

Data Link Layer

Answer 9

Layer 2 (Frame)

Reliable transmission of data frames between two nodes connected by a physical layer.

Question 10

Network Layer

Answer 10

Layer 3 (Packet)

Structuring and managing a multi-node network, including addressing, routing and traffic control.

Question 11

Transport Layer

Answer 11

Layer 4 (Segment, Datagram)

Reliable transmission of data segments between points on a network including segmentation, acknowledgement and multiplexing.

Question 12

Session Layer

Answer 12

Layer 5 (Data)

Managing communication sessions, i.e., continuous exchange of information in the form of multiple back-and-forth transmissions between two nodes

Question 13

Presentation Layer

Answer 13

Layer 6 (Data)

Translation of data between a networking service and an application; including character encoding, data compression and encryption/decryption

Question 14

Application Layer

Answer 14

Layer 7 (Data)

High-level APIs, including resource sharing, remote file access