Question

John, the Network Administrator of XYZ Corporation, is interested in changing the format of text from American Standard Code for Information Interchange (ASCII) to Extended Binary Code Decimal Interchange Code (EBCDIC). In addition, his IT manager requested that all sensitive and confidential information on their servers should be protected by applying the appropriate encryption. What OSI reference model layer is responsible for data format such as encryption?

A. Data-Link Layer (Layer 2)
B. Presentation Layer (Layer 6)
C. Transport Layer (Layer 4)
D. Session Layer (Layer 5)

Answer 1

Answer:

B. Presentation Layer (Layer 6)

Explanation:

In the OSI model, the presentation layer is responsible for the formatting, encryption, and decryption of data and then presenting it to the application layer for further processing. The syntax between two systems may be different, the role of the presentation layer is to format data such that the two systems can communicate with each other. At the presentation layer, an American Standard Code for Information Interchange ASCII coded text file can be converted to Extended Binary Code Decimal Interchange Code (EBCDIC).