Which of the following ISO/OSI layers performs transformations on data to provide a standardized application interface and to provide common communication services such as encryption?
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A. B. C. D.C.
Explanation - The presentation layer (ISO/OSI layer 6) performs transformations on data to provide a standardized application interface and to provide common communication services such as encryption, text compression and reformatting.
The function of the presentation layer is to ensure that the format of the data submitted by the application layer conforms to the applicable network standard.
The layer of the ISO/OSI (International Organization for Standardization/Open Systems Interconnection) reference model that performs transformations on data to provide a standardized application interface and to provide common communication services such as encryption is the Presentation layer.
The ISO/OSI reference model is a conceptual model that helps to describe the communication process between different computer systems. It consists of seven layers, each of which performs a specific set of functions in the communication process. These layers are:
Physical layer: This layer defines the physical connection between devices and the transmission of bits over a communication channel.
Data Link layer: This layer defines the framing of data, error detection and correction, and the management of the communication channel.
Network layer: This layer defines the routing of data through a network and the addressing of devices.
Transport layer: This layer provides reliable data transport services and flow control between devices.
Session layer: This layer establishes, manages, and terminates communication sessions between devices.
Presentation layer: This layer performs transformations on data to provide a standardized application interface and to provide common communication services such as encryption.
Application layer: This layer provides user applications with access to the network and services.
The Presentation layer is responsible for transforming data from the format used by the application layer into a standardized format that can be transmitted over the network. This includes data compression, encryption, and decryption, as well as the conversion of data between different character sets and data formats.
Encryption is one of the common communication services provided by the Presentation layer. Encryption is the process of converting plain text into cipher text, which is a scrambled version of the original text. This process helps to protect data transmitted over the network from unauthorized access or interception.
In summary, the layer of the ISO/OSI reference model that performs transformations on data to provide a standardized application interface and to provide common communication services such as encryption is the Presentation layer.