10 Questions
What is the primary function of the session layer?
Managing the flow of data between parties by segmenting long data streams into smaller data chunks
Which layer is responsible for the delivery of a message from one process to another?
Transport layer
What is the primary function of the data link layer?
Packaging raw data from the physical layer into data frames for delivery to the Network layer
What is the primary function of the network layer?
Delivery of individual packets from source host to destination host
What is the primary function of the transport layer?
Handling addressing messages for delivery, as well as translating logical network addresses and names into their physical counterparts
What is the primary function of the Application Layer in the OSI model?
Providing services to users and accessing network services
What is the main responsibility of the Presentation Layer?
Translating, compressing, and encrypting data
What is the purpose of the Session Layer in the OSI model?
Establishing and maintaining network sessions
What is the function of the top layer of the OSI model?
Providing services to users and accessing network services
What is the role of the Presentation Layer in data transmission?
Both a and b
Study Notes
OSI Model
- The OSI model consists of 7 layers: Application, Presentation, Session, Transport, Network, Data Link, and Physical.
Application Layer
- Provides a set of interfaces for sending and receiving applications to gain access to and use network services.
- Responsible for providing services to the user, such as networked file transfer, message handling, and database query processing.
Presentation Layer
- Manages data-format information for networked communications.
- Converts data into a generic format for network transmission and converts data from the generic network format to a format that the receiving application can understand.
- Responsible for protocol conversions, data encryption/decryption, and data compression/decompression.
Session Layer
- Enables two networked resources to hold ongoing communications (called a session) across a network.
- Responsible for initiating, maintaining, and terminating sessions.
- Manages the transmission of data across a network, segmentation of long data streams into smaller data chunks, and reassembles chunks into their original sequence at the receiving end.
Transport Layer
- Handles the delivery of a message from one process to another.
- Responsible for addressing messages for delivery and translating logical network addresses and names into their physical counterparts.
- Decides how transmissions between computers are handled and handles packet switching and network congestion control to route.
Network Layer
- Responsible for the delivery of individual packets from the source host to the destination host.
- Handles special data frames (packets) between the Network layer and the Physical layer.
- Packages raw data from the physical layer into data frames for delivery to the Network layer at the receiving end.
Data Link Layer
- Reassembles data frames into their original sequence at the receiving end.
Physical Layer
- Handles conversion of data into raw formats that can be handled by the Physical Layer at the sending end.
Test your knowledge of the Open Systems Interconnection (OSI) model, a standard for networking and operating system interactions. Learn the 7 layers of the OSI model, from the Physical Layer to the Application Layer.
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