Write a 4- to 5-page report (excluding cover page and references) answering the following questions.
What are the functions of data link?
Why and where is flow control needed? Explain its parameters.
Explain stop-and-wait flow control with special reference to the handling of (i) a damaged frame (ii) a lost frame.
Explain HDLC. What are the categories of HDLC stations?
What is the configuration and modes of HDLC?
What does “switching” mean? Explain the three possible switching methods.
Assignment Expectations
The report should:
Demonstrate clear understanding of the subject and address all key elements of the assignment.
Show analysis, synthesis, and evaluation of required material.
Demonstrate writing proficiency at the academic level of the course; address the Learning Outcomes of the assignment.
Use and cite relevant and credible sources to support assertions. The report is well organized and follows the structure of a well-written paper. APA style format is applied for all citations.

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