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3 Written questions

2 Multiple choice questions

  1. Defines procedures for operating the communication links. Frames packets. Detects and corrects packets transmit errors.
  2. Defines physical means of sending data over network devices. Interfaces between network medium and devices. Defines optical, electrical and mechanical characteristics.

2 True/False questions

  1. Layer 6: Presentation LayerDefines interface-to-user processes for communication and data transfer in network. Provides standardized services such as virtual terminal, file and job transfer and operations.


  2. Layer 3: Network LayerManages user sessions and dialogues. Controls the establishment and termination of logic links between users. Reports upper layer errors.


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