OSI Model Layers and Functions Quiz

1. What is the primary function of Layer 1 (Physical)?

Routing packets between networks

Transmitting raw bits over physical media

Establishing end-to-end connections

Managing MAC addresses

2. Which protocol operates at the Transport Layer (Layer 4)?

IP

Ethernet

TCP

DNS

3. True or False: The Physical Layer includes network adapters and fiber optic cables.

True

False

4. What is the primary role of Layer 2 (Data Link) in a network?

Managing IP routing and logical addressing

Providing reliable node-to-node delivery using MAC addresses

Encrypting sensitive user data

Controlling application-level services

5. True or False: UDP is a connection-oriented protocol that operates at Layer 4.

True

False

6. True or False: A switch operates at Layer 3 and makes routing decisions based on IP addresses.

True

False

7. Which of the following are functions of the Application Layer? Select all that apply.

Providing user interfaces and services

Performing routing calculations

Supporting email and web browsing

Managing physical transmission of bits

Submit

8. Which OSI layer is responsible for logical addressing and routing?

Layer 2 - Data Link

Layer 3 - Network

Layer 4 - Transport

Layer 5 - Session

9. Which of these statements about the OSI model are correct? Select all that apply.

Layer 1 deals with physical cables and voltages

Layer 4 handles end-to-end communication

Layer 2 is responsible for routing between networks

Layer 7 interfaces directly with user applications

Submit

10. What does the Session Layer (Layer 5) primarily manage?

Establishing, maintaining, and terminating connections

Converting data formats between systems

Ensuring reliable delivery of data

Translating domain names to IP addresses

11. What device operates at Layer 3 to forward packets between networks?

Switch

Router

Hub

Bridge

Submit

14. Which protocol is used at Layer 3 to determine the best path for packet delivery?

ARP

ICMP

BGP

DHCP

15. At Layer 2, data is organized into frames. What is the smallest unit of data at Layer 3?

Bit

Packet

Segment

Frame

16. Which layer is responsible for encryption and data confidentiality?

Layer 4 - Transport

Layer 5 - Session

Layer 6 - Presentation

Layer 7 - Application

17. Layer 7 (Application) includes which of the following protocols? Select all that apply.

HTTP

SMTP

IP

FTP

Submit

18. Which layer handles the translation of data formats and compression for transmission?

Layer 5 - Session

Layer 6 - Presentation

Layer 7 - Application

Layer 4 - Transport

Submit

Network+ OSI Model Layers and Functions Quiz

1. What is the primary function of Layer 1 (Physical)?

2.

What first name or nickname would you like us to use?

2. Which protocol operates at the Transport Layer (Layer 4)?

3. True or False: The Physical Layer includes network adapters and fiber optic cables.

4. What is the primary role of Layer 2 (Data Link) in a network?

5. True or False: UDP is a connection-oriented protocol that operates at Layer 4.

6. True or False: A switch operates at Layer 3 and makes routing decisions based on IP addresses.

7. Which of the following are functions of the Application Layer? Select all that apply.

8. Which OSI layer is responsible for logical addressing and routing?

9. Which of these statements about the OSI model are correct? Select all that apply.

10. What does the Session Layer (Layer 5) primarily manage?

11. What device operates at Layer 3 to forward packets between networks?

12. The Data Link Layer uses ______ addresses to identify devices on the same network segment.

13. A ______ operates at Layer 2 and forwards frames based on MAC address tables.

14. Which protocol is used at Layer 3 to determine the best path for packet delivery?

15. At Layer 2, data is organized into frames. What is the smallest unit of data at Layer 3?

16. Which layer is responsible for encryption and data confidentiality?

17. Layer 7 (Application) includes which of the following protocols? Select all that apply.

18. Which layer handles the translation of data formats and compression for transmission?

19. At the Network Layer, a ______ is the basic unit of data that includes source and destination IP addresses.

20. At Layer 4, a ______ is used by TCP to ensure ordered, reliable delivery of data segments.