Learn in the textbookThe OSI Reference Model and Its 7 Layers
DefinitionThe presentation layer (プレゼンテーション層) is Layer 6; it aligns the representation format of data, such as character codes and image formats, so both sender and receiver can understand it.
ExplanationIt converts data into a common format so it reads correctly even when sender and receiver represent it differently. Data compression and encryption are also given as examples of its role.
AnalogyIt is like an interpreter who keeps the content of a talk unchanged but puts it into a language the listener understands.
Memory hookPresentation means how something is shown. Link it to a layer that tidies the form, not the content.