OSI Model - Quiz

Question 1

What is the function of the Physical Layer (L1)?

A) Handles error correction and flow control
B) Translates data formats and handles encryption
C) Establishes and terminates logical links between devices
D) Transmits raw bit streams over physical media like cables or radio waves

Answer 1

D) Transmits raw bit streams over physical media like cables or radio waves

Question 2

What is the function of the Data Link Layer (L2)?

A) Routes data packets between networks
B) Encrypts data before transmission
C) Handles MAC addressing and error detection in frames ✅
D) Determines the best path for data to travel through the network

Answer 2

C) Handles MAC addressing and error detection in frames ✅

Question 3

What is the function of the Network Layer (L3)?

A) Breaks data into packets and assigns IP addresses for routing
B) Ensures data segments are error-free
C) Converts signals to digital bits for processing
D) Establishes and manages end-to-end communication sessions

Answer 3

A) Breaks data into packets and assigns IP addresses for routing

Question 4

What is the function of the Transport Layer (L4)?

A) Establishes reliable connections and handles error recovery
B) Transmits electrical signals over cables
C) Defines network access protocols like MAC
D) Manages logical addressing and packet forwarding

Answer 4

A) Establishes reliable connections and handles error recovery

Question 5

What is the function of the Session Layer (L5)?

A) Handles session setup between devices
B) Assigns MAC addresses to devices
C) Handles IP addressing for routing
D) Establishes, maintains, and terminates sessions between applications

Answer 5

D) Establishes, maintains, and terminates sessions between applications

Question 6

What is the function of the Presentation Layer (L6)?

A) Handles session setup between devices
B) Converts data formats, handles encryption and compression
C) Determines the route for data across the network
D) Assigns MAC addresses to devices

Answer 6

B) Converts data formats, handles encryption and compression

Question 7

What is the function of the Application Layer?

A) Handles encryption and decryption
B) Converts electrical signals to bits
C) Manages physical media like cables and switches
D) Provides network services directly to end-user applications

Answer 7

D) Provides network services directly to end-user applications