Distribution Systems

Question 1

What happens when the humidity is either too low or too high?

Answer 1

Too low: Static electrical charges
Too high: Condensation that can damage the equipment

Question 2

What 4 factors in terms of HVAC are important?

Answer 2

1. HVAC factors (temp, humid, airflow)
2. Proper rack spacing
3. Raised floor systems
4. Ceiling plenums

Question 3

What 5 factors are important in terms of power distribution?

Answer 3

1. UPS (Uninterruptible Power Supply)
2. PDU (Power Distribution Unit)
3. Generator
4. Managing power loads evenly
5. Using the right voltage

Question 4

What are the 5 parts of the cable distribution system?

Answer 4

1. Demarcation point
2. Main distribution frame
3. Intermediate distribution frame (like on each floor)
4. Racks
5. Patch Panels and/or Fibre distribution panels

Question 5

What are the 3 types of fire supressing systems?

Answer 5

1. Wet pipe system (basic and not suited for data centers / server rooms)
2. Pre-action system (like a 2nd factor to activate the wet pipe system)
3. Special supression system (uses a clean agent or foam/powder)

Question 6

Which is a key function of a UPS in a data center?

Answer 6

Ensuring contincous power to the equipment

Question 7

What lockable device is the MOST crucial for safeguarding physical networking equipment?

Answer 7

Server Rack Enclosure

Question 8

In adherence to standards for physical networking installations, what is the recommended orientation for a server rack to optimize cooling efficiency?

Answer 8

Port-side exhaust

Question 9

How should Cable Distribution Systems be designed?

Answer 9

Hierachical for logical and functional placement in buildings.

Question 10

How is a Patch Panel built and whats it main use.

Answer 10

The front typically has RJ-45 jacks and the back a 110 punchdown block. Its primarily used for better organisation and preventing direct connections for better maintenance.

Question 11

What features does a UPS typically have and how long does it hold?

Answer 11

• 15 - 30 Minutes.
• Protection against surges
• Line conditioning

Question 12

Why is Power Load Management so important.

Answer 12

• To prevent circuit overloads due to too much power is drawn from just one circuit.
• Ensure efficient power usage

Question 13

What temperature is best suited to operate equipment?

Answer 13

20 -25 C or 68 - 77 F

Question 14

What is the best suited humidity level?

Answer 14

40% - 60%