The OSI Module Flashcards
Q: What is the second layer of the OSI model?
A: Data Link Layer - Handles error detection and correction, and provides MAC addresses for devices.
Q: What is the first layer of the OSI model?
A: Physical Layer - Deals with the physical connection between devices, including cables and switches.
Q: What is the third layer of the OSI model?
A: Network Layer - Manages packet routing through logical addressing (IP addresses).
Q: What is the fourth layer of the OSI model?
A: Transport Layer - Ensures complete data transfer through error recovery and flow control (TCP/UDP).
Q: What is the fifth layer of the OSI model?
A: Session Layer - Manages and controls the connections between computers (sessions).
Q: What is the sixth layer of the OSI model?
A: Presentation Layer - Translates data formats between the application and the network.
Q: What is the seventh layer of the OSI model?
A: Application Layer - Provides network services directly to end-users (e.g., HTTP, FTP).
Q: How many layers does the OSI model have?
A: Seven layers.
Q: What does OSI stand for?
A: Open Systems Interconnection.
Q: Which organizations published the OSI model?
A: International Telecommunication Union (ITU) and International Organization for Standardization (ISO).
Q: How is the OSI model particularly useful?
A: For taking apart and analyzing communication piece by piece.
Q: Which OSI model layers are transport-oriented?
A: Layers 2-4 are transport-oriented layers.
Q: Which OSI model layers are application-oriented?
A: Layers 5-7 are application-oriented layers.
Q: How do the layers of the OSI model interact with each other?
A: Each layer offers services to the layer directly above it and uses the services of the layer below it.
Q: What must happen when two systems communicate using the OSI model?
A: All seven layers of the OSI model are run through at least twice, once by the sender and once by the receiver.
