CCNA Discovery 3 Module 7 Exam Answers Version 4.0 1. Why are Network Control Protocols used in PPP? • to establish and terminate data links • to provide authentication capabilities to PPP • to manage network congestion and to allow quality testing of the link • to allow multiple Layer 3 protocols to operate over the same physical link 2.

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CCNA Discovery 3 Module 7 Exam Answers Version 4.0