CompTIA A+ Hardware
Dual-channel memory systems only theoretically double memory bandwidth. What is the bandwidth increase in actual terms?
5-15%
Shielded Twisted Pair (STP)
A cable that provides more EMI protection, but is more expensive than UTP cable.
RJ-45 connector
A connector with 8 connectors, 4 pairs of wires, and a locking tab; used for Ethernet networks.
Category 6a (Cat 6a) cable
A gigabit Ethernet cable with 10 Gbps speeds limited to cable length less than 100 meters.
Category 6 (cat 6) cable
A gigabit Ethernet cable with 10 Gbps speeds limited to cable length less than 55 meters.
Crossover twisted pair cable
Arrange wires in the first connector using T568A standard and the second connector the T568B standard.
Coaxial cable
Carries broadband internet signals.
Fiber optic cable
Carries broadband internet signals.
Inner conductor
Carries data signals in cables.
Central core
Carries the signal.
Regular cleaning of your thermal printhead prevents you from having to replace the printhead often. Which of the following describes the recommended procedure to remove carbon buildup and adhesives from a thermal printhead?
Clean by wiping with isopropyl alcohol on a lint-free cloth or cotton swab
Category 7 (Cat 7) cable
Has the strictest specifications for crosstalk and noise of the Cat cables.
Cladding
Maintains the signal in the center of the core.
Protective layer
Prevents the cladding and central core from breaking.
What should you use to clean an inkjet printer's print heads?
The printer's cleaning function
Which of the following types of Blue-ray Discs can hold up to 100 GB of data?
Triple-layer
You work for a small company as the human resources specialist. Since the company is fairly small, you are maintaining all of the employee information on your desktop computer, which is running Windows 11. This computer has two high-capacity hard disks. You want to ensure that this information is protected from a hard disk failure, so you want to set up a Windows software RAID system. Which of the following would be your BEST solution?
Use mirrored volumes
Category 5e (cat 5e) cable
A cable that supports gigabit Ethernet.
Unshielded Twisted Pair (UTP)
A cable used for ethernet cables and telephone wires.
F-type connector
A coaxial cable specification used for CCTV video systems.
RG-6
A coaxial cable specification used for cable TV, satellite TV, and broadband cable internet.
RJ-11 connector
A connector with 4 connectors, 2 pairs of wires, and a locking tab; used primarily for telephone wiring.
You want to connect your workstation to a large, high-definition screen that is over 30 feet away from the workstation for displaying a video presentation with sound. Which of the following ports will BEST support the transmission distance between the workstation and the display before the signal starts degrading?
DisplayPort
Sheath
Encases a cable to protect it from external elements.
Plastic sheath
Encases everything and protects the cable.
Braided mesh conductor
Functions as a second physical channel and as a ground.
ST, SC, and LC connectors
Straight tip, Subscriber connector, and Lucent connector--various fiber optic connector types.
Insulator
Surrounds inner cable conductor and keeps signal separated from the mesh conductor.
Which of the following utilities is specifically designed to help you extend your SSD drive's lifespan by wiping clean any blocks of data on the drive that are no longer required?
TRIM
An employee complains that every time they turn their computer off, the computer's time is set to 12:00 p.m., and the date is set back to January 1, 1990. Which of the following is the MOST likely cause of this anomaly?
The CMOS battery has failed
Single mode cable
Transfers data using a single light ray.
Multi-mode
Transfers data using multiple light rays.
Patch twisted pair cable
Uses the same wire configuration on each connector end.
