Skills and Knowledge Flashcards

A technician is troubleshooting a network issue and uses the OSI model to isolate the problem. At which layer would a faulty NIC card most likely cause an issue?

Answer: Data Link Layer

A faulty NIC card operates at the Data Link Layer (Layer 2), which handles physical addressing and framing.

Which type of cooling system uses a refrigerant to transfer heat away from electronic components in a data center?

Answer: Vapor compression cooling

Vapor compression cooling uses a refrigerant cycle to absorb and dissipate heat from data center equipment.

When documenting a technical repair, which element is MOST critical to include for future reference?

Answer: Root cause and corrective action taken

Documenting the root cause and corrective action ensures future technicians can quickly address recurring issues.

A PC fails to POST and emits three long beeps. What does this typically indicate according to standard BIOS codes?

Answer: RAM failure

Three long beeps on most BIOS systems indicate a RAM failure or memory error during POST.

Which RAID level provides fault tolerance by mirroring data across two drives with no parity overhead?

Answer: RAID 1

RAID 1 mirrors identical data to two drives, providing fault tolerance without parity calculations.

A technician must handle capacitors in a CRT monitor before servicing. What is the FIRST safety step?

Answer: Discharge the capacitors

Capacitors in CRT monitors can hold lethal charges; discharging them before servicing is the critical first step.

Which tool is used to verify that a cable is correctly terminated and that all pairs are properly connected in a network cable?

Answer: Cable tester

A cable tester verifies continuity, correct wiring order, and proper termination of network cables.