Osi Flashcards
(27 cards)
What does OSI stand for in the OSI model?
Open Systems Interconnection
How many layers are there in the OSI model?
Seven layers
What is the purpose of the Physical layer in the OSI model?
To transmit raw bitstreams over a physical medium
Which layer of the OSI model is responsible for data formatting and encryption?
Presentation layer
True or False: The Transport layer provides end-to-end communication services.
True
Fill in the blank: The _____ layer is responsible for establishing, maintaining, and terminating connections.
Session
Which layer of the OSI model deals with routing and forwarding of data packets?
Network layer
What is the primary function of the Data Link layer?
To provide node-to-node data transfer and error detection/correction
Which layer is closest to the end user in the OSI model?
Application layer
What is the port number for HTTP in the Transport layer?
Port 80
True or False: The OSI model is a protocol that is used in real-world networking.
False
What is the port number for HTTPS?
Port 443
Which layer is responsible for error handling and flow control?
Transport layer
Which protocol operates at the Network layer of the OSI model?
IP (Internet Protocol)
Fill in the blank: The _____ layer manages the delivery of messages from one application to another.
Transport
What is the port number for FTP?
Port 21
Which layer provides services such as file transfer and email?
Application layer
What is the main role of the Session layer?
To manage sessions between applications
True or False: The Data Link layer is responsible for the logical addressing of devices.
False
What type of addressing is used at the Network layer?
Logical addressing
Which layer of the OSI model encapsulates the data into packets?
Network layer
What is the port number for DNS?
Port 53
Fill in the blank: The _____ layer is responsible for the physical transmission of data.
Physical
Which layer is responsible for ensuring complete data transfer?
Transport layer
