1 Table of Contents: “..., troubleshoot common cabling and physical interface issues. -- 5.3 Given a scenario, troubleshoot common issues...”

2 Table of Contents: “... of the first user -- 4.2.2. Outage probability at D2 -- 5. Improving security at physical layer -- 6...”

3 Table of Contents: “.... Physical Drives -- Hashing Algorithms: SHA-256 As Digital Fingerprints -- Best Practices for Admissibility...”

4 Table of Contents: “... -- 2.3 Space -- Physical Space -- Lighting -- Noise -- Weight -- 2.4 Facility Management -- 2.5...”