CompTIA ITF+ ITF Infrastructure 2 — Questions and Answers
Question 1: Which type of cable uses light pulses to transmit data and is immune to electromagnetic interference?
- Coaxial cable
- Fiber optic cable (Correct answer)
- Cat6 Ethernet cable
- Twisted pair cable
Correct answer: Fiber optic cable
Fiber optic cable transmits data as light pulses through glass or plastic strands, making it immune to electromagnetic interference.
Question 2: A user's laptop shows 'No Boot Device Found.' What is the most likely cause?
- The RAM is faulty
- The hard drive has failed or is not detected (Correct answer)
- The monitor cable is loose
- The Wi-Fi adapter is disabled
Correct answer: The hard drive has failed or is not detected
A 'No Boot Device Found' error typically indicates the hard drive has failed or the BIOS cannot detect a bootable storage device.
Question 3: What does the acronym BIOS stand for?
- Binary Input Output System
- Basic Integrated Operating Software
- Basic Input/Output System (Correct answer)
- Built-In Operating System
Correct answer: Basic Input/Output System
BIOS stands for Basic Input/Output System, the firmware that initializes hardware during the boot process before handing control to the OS.
Question 4: Which wireless standard operates exclusively on the 5 GHz band and offers speeds up to 3.5 Gbps?
- 802.11b
- 802.11g
- 802.11n
- 802.11ac (Correct answer)
Correct answer: 802.11ac
802.11ac (Wi-Fi 5) operates exclusively on the 5 GHz band and supports theoretical speeds up to 3.5 Gbps.
Question 5: What is the primary function of a network switch?
- Assign IP addresses to devices
- Connect multiple networks with different IP ranges
- Forward data frames between devices on the same network using MAC addresses (Correct answer)
- Provide wireless connectivity to devices
Correct answer: Forward data frames between devices on the same network using MAC addresses
A network switch uses MAC addresses to forward data frames only to the intended destination device within the same local network.
Question 6: Which storage interface is commonly found in modern laptops and uses a smaller connector than standard SATA?
- IDE
- SCSI
- mSATA/M.2 (Correct answer)
- SAS
Correct answer: mSATA/M.2
mSATA and M.2 are compact storage interfaces designed for laptops and small form-factor devices, using smaller connectors than standard SATA.
Question 7: A computer randomly restarts under heavy load. Which component is most likely overheating?
- RAM modules
- Network adapter
- CPU or GPU (Correct answer)
- Power LED connector
Correct answer: CPU or GPU
Random restarts under heavy processing load typically indicate the CPU or GPU is overheating and triggering a thermal shutdown to prevent damage.
CompTIA ITF+ ITF Infrastructure 2
Which type of cable uses light pulses to transmit data and is immune to electromagnetic interference?