Terminology
What is a Packet?
The formatted unit of data at the Network Layer
What does OSI stand for?
Open Systems Interconnection
Explain the Physical Layer
Deals with the physical connection and data transmission, like cables and signals.
What does TCP/IP stand for?
Transmission Control Protocol/Internet Protocol
What is Bandwidth?
The amount of data that can be transmitted over a network connection in a given period.
What are the seven layers of the OSI?
Physical, Data Link, Network, Transport, Session, Presentation, Application
Explain the Session Layer
Manages sessions or connections between devices.
Which model has an 'Internet' layer?
TCP/IP
What is Latency?
The delay in data transmission across a network, often influenced by the efficiency of the OSI layers.
Is the OSI Protocol-dependent or independent
Protocol-independent
Which layer provides error detection and correction
Transport Layer
Which two layers are consistent between the two models?
Transport and Application
What is Flow Control?
A technique used mainly at the Transport Layer to manage the rate of data transmission between devices.
What units of data are used in the OSI Model?
Packets, Frame, Segment, and Bit
What layer is being described:
Provides network services directly to end-user applications (e.g., email, web browsing).
Facilitates user interactions with the network.
Manages protocols for application-specific communication, such as HTTP, FTP, and SMTP.
Enables data exchange between software applications and the network.
The Application Layer
What model is used as a teaching tool and for standardizing networks?
OSI Model
What is Decapsulation?
Removing protocol information as data moves up the OSI layers on the receiving end.
Explain the OSI model
The OSI (Open Systems Interconnection) model is a conceptual framework used to understand and standardize how different networking systems communicate. It divides network communication into seven layers, each with a specific function.
What is the difference between the Application layer and the Presentation layer?
Application Layer:
Provides network services to end-user applications
Provides network services directly to end-user applications (e.g., email, web browsing).
Facilitates user interactions with the network.
Manages protocols for application-specific communication, such as HTTP, FTP, and SMTP.
Enables data exchange between software applications and the network.
Presentation Layer:
Translates data formats between applications.
Translates data formats between systems (e.g., encryption, compression).
Ensures data is in a usable format for the Application Layer.
Manages data encoding, decoding, and encryption for secure communication.
Explain the different purposes of TCP/IP and OSI?
TCP/IP:
A practical implementation model used for internet communication.
OSI:
A conceptual framework for understanding network communication.
Explain Our Analogy
Application Layer - The Letter Itself and the Communication
Presentation Layer - Writing the Letter in a Readable Format
Session Layer - Conversation Between Sender and Receiver
Transport Layer - The Postman
Network Layer - The Postal Address
Data Link Layer - The Envelope
Physical Layer - Road and Postal Trucks