It is the design, development, implementation, support, and management of computer hardware and software applications.
Who developed the A+ Certification program?
Computing Technology Industry Association (CompTIA)
What does the A+ Essentials exam measure?
The A+ Essentials exam measures the necessary competencies of an entry level IT professional with at least 500 hours of hands on experience in the lab or field. This includes the fundamentals of computer technology, networking, and security, as well as communications skills.
What are the five modules of the EUCIP IT Administrator Certificate?
1. PC Hardware; the basic maeup of a personal computer and the functions of its components; dignose and repair
2. Operating systems; installing/updating system and apps
3. LAN and network services
4. Expert network use
5. IT security
What makes up a computer system?
hardward and software
What is hardware?
What are examples of hardware?
keyboard, monitor, cables, speakers, mouse
What is software?
operating system and programs
What does A+ Certification signify?
It signifies that a candidate is a qualified PC hardware and software technician.
What does the operating system do?
It instructios the computer how to operate (identifying, accessing, proccessing)
What does the computer case do?
It protects the internal components
What determines the size and shape of the computer case?
The motherboard and other internal components.
How large should the computer case be?
Depends; in general, it should be durable, easy to service, and have enough room for expansion.
How large should the power supply be?
large enought to supply power to its current components; future upgrades to current components may also require a larger power supply
What does a computer case contain?
The internal components of a computer
What are computer cases made of?
plastic, steel, aluminum
What are the size and layout of a case called?
What are the basic form factors for computer cases?
desktop and tower
What must be considered when choosing a case?
-size of the motherboard
-nuber of internal/externals drives (bays)
How are internal components grounded?
attachment to the case
What does a power supply do?
converts AC power to DC, which is a lower voltage
What can protect a computer from problems caused by a change in power?
UPS (uninterttuptible power supply)
What does a power invertor do?
provides AC power from battery by converting DC current of UPS battery
What is a keyed connector?
It is designed to be inserted in only one direction.
What is a molex connector used to connect?
Optical drive or hard drive
What does a berg connector connect?
What kind of connection is used to connect the motherboard?
20-pin or 24-pin slotted connector
What is the voltage of the yellow wire?
What is the voltage of the blue wire?
What is the voltage of the orange wire?
What is the voltage of the red wire?
What is the voltage of the white wire?
What color is the ground wire?
What are the four basic units of electricity?
V - voltage
I - current
P - power
R - resistance
What is voltage?
measure of force required to push electrons through a circuit
What is current?
amount of electrons going through a circuit
How is current measured?
amperes, amps (A)
What is power?
What is the measurement of power?
What is resistance?
opposistion to flow of current
How is resistance measured?
Lower resistance allows _______ current
What is Ohm's Law?
What will result in higher power?
increasing the current or the voltage
What is the motherboard?
the main printed circuit board that contains buses (electrical pathways)