3 Written questions
2 Multiple choice questions
- Defines physical means of sending data over network devices. Interfaces between network medium and devices. Defines optical, electrical and mechanical characteristics.
- Manages user sessions and dialogues. Controls the establishment and termination of logic links between users. Reports upper layer errors.
2 True/False questions
Layer 7: Application Layer → Defines interface-to-user processes for communication and data transfer in network. Provides standardized services such as virtual terminal, file and job transfer and operations.
Layer 4: Transport Layer → Determines how data are transferred between network devices. Routes packets according to unique network device addresses. Provides flow and congestion control to prevent network resource depletion.