Question 1

Which layer of the OSI model is responsible for routing data packets between different networks?

Accepted Answer

Network Layer. The Network Layer handles the determination of the best physical path for data to reach its destination. It uses logical addressing such as IP addresses to manage packet forwarding. Routers are the primary hardware devices operating at this specific level.

Question 2

Which layer is known as Layer 2 in the Open Systems Interconnection (OSI) model?

Accepted Answer

Data Link Layer. The Data Link Layer provides reliable node-to-node delivery of data. It is divided into two sublayers: Logical Link Control and Media Access Control. Switches and bridges typically function at this stage of the network model.

Question 3

What is the primary function of the Presentation Layer in the OSI model?

Accepted Answer

Data encryption and compression. The Presentation Layer ensures that information sent by the application layer of one system is readable by the application layer of another. It handles tasks like character encoding, data compression, and security encryption. It acts as the translator for the network communication process.

Question 4

Which layer of the OSI model manages end-to-end communication and error recovery?

Accepted Answer

Transport Layer. The Transport Layer is responsible for the reliable delivery of messages between host systems. It handles segmenting data, flow control, and error checking to ensure completeness. TCP and UDP are the most common protocols found at this layer.

Question 5

The Physical Layer of the OSI model deals with which of the following?

Accepted Answer

Electrical and mechanical specifications. The Physical Layer is the lowest layer and focuses on the actual hardware used for data transmission. It defines cable types, signal voltages, and bit-level synchronization. Repeaters, hubs, and network cables are essential components of this layer.

OSI Model — Set 1