3 Written questions
2 Multiple choice questions
- Manages user sessions and dialogues. Controls the establishment and termination of logic links between users. Reports upper layer errors.
- Manages end-to-end message delivery in network. Provides reliable and sequential packet delivery through error recovery and flow control mechanisms. Provides connectionless oriented packet delivery.
2 True/False questions
Layer 1: Physical Layer → Defines physical means of sending data over network devices. Interfaces between network medium and devices. Defines optical, electrical and mechanical characteristics.
Layer 2: Data Link 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.