1
Q
What is the difference between RAID 0, 1, and 5?
A
RAID 0: Striping (performance, no redundancy). RAID 1: Mirroring (high redundancy). RAID 5: Striping with parity (balance of speed/redundancy).
2
Q
How do you troubleshoot a server that won’t power on?
A
Check power cables, PDU (Power Distribution Unit) source, PSU (Power Supply Unit) LEDs, and seating of the motherboard.
3
Q
What does a “DIMM error” signify?
A
RAM/Memory error.
4
Q
What is the purpose of a PDU?
A
Power Distribution Unit—distributes electricity to rack equipment.
5
Q
What is a crossover cable used for?
A
Connecting similar devices directly (e.g., switch-to-switch, host-to-host).
