OSI Model Layers Quiz

Physical Layer
- Deals with the physical connection between devices.
- Manages transmission of raw bits over a communication channel.
Data Link Layer
- Responsible for node-to-node data transfer.
- Handles error detection and correction from the physical layer.
Network Layer
- Manages routing of data packets between devices across different networks.
- Responsible for logical addressing (e.g., IP addresses).
Transport Layer
- Ensures reliable data transfer and error recovery.
- Manages flow control and segmentation of data (e.g., TCP, UDP).
Session Layer
- Manages sessions or connections between applications.
- Handles session establishment, maintenance, and termination.
Presentation Layer
- Translates data between the application layer and the network.
- Manages data encryption, compression, and format translation.
Application Layer
- Closest to the end user; interfaces with software applications.
- Provides network services to applications (e.g., HTTP, FTP, SMTP).

Physical Layer
- Defines electrical/physical specifications.
- Transmits raw bitstreams over a medium.
Data Link Layer
- Frames data packets.
- Handles physical addressing (MAC addresses).
- Provides error detection/correction.
Network Layer
- Routes packets using logical addressing.
- Manages traffic control and fragmentation.
Transport Layer
- Provides reliable or unreliable delivery.
- Segments and reassembles data.
Session Layer
- Manages sessions between applications.
- Controls dialog (half/full duplex).
Presentation Layer
- Converts data formats.
- Handles encryption and compression.
Application Layer
- Interfaces directly with user applications.
- Provides protocols for specific applications.

Network Troubleshooting: Helps identify issues by isolating problems to specific layers.
Interoperability: Different systems can communicate via standardized protocols.
Network Design: Assists in creating layered network architectures.
Protocol Development: Guides the development of new networking protocols.
Education: Provides a framework for teaching networking concepts and functions.

Physical Layer: Facilitates physical connections and transmits raw bits over communication channels.
Data Link Layer: Ensures node-to-node data transfer and conducts error detection and correction.
Network Layer: Manages data packet routing and logical addressing like IP addresses.
Transport Layer: Guarantees reliable data transmission, including flow control and data segmentation (e.g., TCP, UDP).
Session Layer: Oversees sessions between applications, including establishment, maintenance, and termination.
Presentation Layer: Translates data formats, manages data encryption, compression, and format adjustments.
Application Layer: Interfaces directly with software applications, delivering network services such as HTTP, FTP, and SMTP.

Physical Layer: Establishes electrical and physical specifications for transmission.
Data Link Layer: Frames packets and manages physical addressing through MAC addresses while ensuring error detection and correction.
Network Layer: Routes packets based on logical addressing and controls traffic flow and fragmentation.
Transport Layer: Offers reliable or unreliable data delivery and is responsible for segmentation and reassembly.
Session Layer: Manages application sessions and controls communication modes (half/full duplex).
Presentation Layer: Converts and encrypts data formats while handling compression.
Application Layer: Directly interfaces with user applications and provides protocol support for specific tasks.

Network Troubleshooting: Aids in identifying network problems by isolating issues to specific layers.
Interoperability: Facilitates communication between different systems via standardized protocols.
Network Design: Guides the creation of layered architectures for efficient network management.
Protocol Development: Informs the creation of new networking protocols that align with established layers.
Education: Serves as a framework for teaching fundamental networking concepts and functions.