18 Questions
What is the OSI model?
The OSI model is a conceptual model created by the International Organization for Standardization to enable diverse communication systems to communicate using standard protocols.
Which layer of the OSI model is closest to the end user?
The Application Layer (Layer 7) is the closest to the end user.
What does the Presentation Layer in the OSI model do?
The Presentation Layer prepares or translates data between application and network formats.
How many layers are there in the OSI model?
There are seven layers in the OSI model.
Give an example of an application that operates at Layer 7 of the OSI model.
A web browser such as Google Chrome or an app like Skype operates at Layer 7.
What organization created the OSI model?
The International Organization for Standardization (ISO) created the OSI model.
What layer of the OSI model represents the electrical and physical characteristics of a system?
Physical Layer
When troubleshooting a networking problem, why do many professionals check the physical layer first?
To ensure all cables are properly connected and power is not disconnected.
Define encapsulation in networking.
A process of adding protocol information to data as it passes through layers.
Where does the encapsulation process take place - in the sending or receiving computer?
Sending computer
What are the terms used to represent encapsulated data before and after the data in networking models?
Header and trailer
In which model do the terms encapsulation and de-encapsulation play a role in adding and removing protocol information?
Networking model
What is the main function of the Session Layer in the OSI model?
Setup, coordination, and termination between applications at each end of the session.
Which layer in the OSI model deals with the coordination of data transfer between end systems and hosts?
Transport Layer
What is the best-known example of a protocol at the Transport Layer?
Transmission Control Protocol (TCP)
At which layer of the OSI model do TCP and UDP port numbers operate?
Layer 4 - Transport Layer
What is the main responsibility of the Network Layer in the OSI model?
Packet forwarding, including routing through different routers.
What are the two sublayers of the Data Link Layer in the OSI model?
Media Access Control (MAC) layer and Logical Link Control (LLC) layer.
Explore the fundamental concepts of the Open Systems Interconnection (OSI) model, a conceptual framework for standardizing communication protocols in computer networking. Learn about its structure and significance in facilitating inter-system communication.
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