CTE Skills and Knowledge 2 — Questions and Answers
Question 1: 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?
- Application Layer
- Transport Layer
- Data Link Layer (Correct answer)
- Network Layer
Correct answer: Data Link Layer
A faulty NIC card operates at the Data Link Layer (Layer 2), which handles physical addressing and framing.
Question 2: Which type of cooling system uses a refrigerant to transfer heat away from electronic components in a data center?
- Evaporative cooling
- Vapor compression cooling (Correct answer)
- Free-air cooling
- Liquid immersion cooling
Correct answer: Vapor compression cooling
Vapor compression cooling uses a refrigerant cycle to absorb and dissipate heat from data center equipment.
Question 3: When documenting a technical repair, which element is MOST critical to include for future reference?
- The technician's personal opinions
- Root cause and corrective action taken (Correct answer)
- Customer's payment method
- Brand preferences of the customer
Correct answer: Root cause and corrective action taken
Documenting the root cause and corrective action ensures future technicians can quickly address recurring issues.
Question 4: A PC fails to POST and emits three long beeps. What does this typically indicate according to standard BIOS codes?
- CPU failure
- RAM failure (Correct answer)
- GPU failure
- Power supply failure
Correct answer: RAM failure
Three long beeps on most BIOS systems indicate a RAM failure or memory error during POST.
Question 5: Which RAID level provides fault tolerance by mirroring data across two drives with no parity overhead?
- RAID 0
- RAID 1 (Correct answer)
- RAID 5
- RAID 6
Correct answer: RAID 1
RAID 1 mirrors identical data to two drives, providing fault tolerance without parity calculations.
Question 6: A technician must handle capacitors in a CRT monitor before servicing. What is the FIRST safety step?
- Wear rubber gloves
- Discharge the capacitors (Correct answer)
- Unplug the monitor and wait 24 hours
- Use anti-static wrist strap
Correct answer: Discharge the capacitors
Capacitors in CRT monitors can hold lethal charges; discharging them before servicing is the critical first step.
Question 7: Which tool is used to verify that a cable is correctly terminated and that all pairs are properly connected in a network cable?
- Multimeter
- Cable tester (Correct answer)
- Toner probe
- Oscilloscope
Correct answer: Cable tester
A cable tester verifies continuity, correct wiring order, and proper termination of network cables.
CTE Skills and Knowledge 2
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?