Level 1 - ISO Quiz

Which layer of the OSI model is responsible for transmitting raw data bits over a communication channel?

• Physical layer
• Data link layer
• Network layer
• Transport layer

Which layer of the OSI model provides reliable, error-free communication between two directly connected devices?

• Physical layer
• Data link layer
• Network layer
• Transport layer

Which layer of the OSI model is responsible for routing data between different networks and determining the best path for data to take?

• Physical layer
• Data link layer
• Network layer
• Transport layer

Which protocol operates at the Transport layer and provides reliable, ordered, and error-checked delivery of data between applications?

• TCP
• UDP
• IP
• ARP

Which layer of the OSI model establishes, maintains, and ends sessions between applications, and handles synchronization and checkpointing?

• Session layer
• Presentation layer
• Application layer
• Network layer

Which layer of the OSI model is responsible for data encryption and decryption, as well as data compression and formatting?

• Physical layer
• Session layer
• Presentation layer
• Application layer

Which layer of the OSI model provides services to end-users, such as email, file transfer, and web browsing?

• Physical layer
• Data link layer
• Network layer
• Application layer

What is the primary reason the OSI Model is still considered valuable today?

• It provides a common language for discussing networking concepts
• It is the model that the modern Internet strictly follows
• It helps design new network infrastructure
• It makes application development more efficient

Which layers of the OSI model are responsible for the transmission of data over the physical network?

• Physical, Data Link, and Network layers
• Transport, Session, Presentation, and Application layers
• Physical and Data Link layers only
• Presentation, Application, and Network layers

Which layers of the OSI model are responsible for the services and functions specific to the applications running on the devices?

• Physical, Data Link, and Network layers
• Transport, Session, Presentation, and Application layers
• Presentation and Application layers only
• Data Link, Network, and Transport layers