amperesWhat electrical unit refers to the number of electrons moving through a circuit per second? Explanation: Current refers to the amount of electrons moving through a circuit per second and is measured in amperes or amps.Mar 29, 2016
What is a function of the BIOS It essentials?
It ensures that a computer will only boot an operating system that is trusted by the motherboard manufacturer. It provides passwords for different levels of access to the BIOS.
How is a power supply commonly attached to a tower case?
How is a power supply commonly attached to a tower case? Explanation: To install a power supply into a PC tower case, open the case, align the power supply with the case holes, and use screws to attach the power supply to the case.
What is used to prevent the motherboard from touching the case?
What is used to prevent the motherboard from touching metal portions of the computer case? Explanation: Screws and standoffs that are non-metallic may be insulators and protect against grounding. 7.
Which is a BIOS security feature?
There are several commonly available BIOS security features. Drive encryption is used to encrypt hard drives to prevent data access. Secure boot ensures that devices will only boot a trusted operating system. BIOS passwords allow different levels of BIOS access.
Which two factors must be considered when replacing?
The power supply must provide the voltage that is requred by the new RAM. The new RAM must match the old RAM in terms of capacity and speed.
What are two reasons someone might upgrade a NIC?
A network interface card (NIC) upgrade might be done to provide wireless connectivity or to increase bandwidth.
Can the motherboard touch the case?
Can a motherboard touch the case? if you mean underneath the motherboard and assuming the case is made from an electrically conducting material, like metal, then the answer is no. … If you mean the edges of the circuit board, that can touch the sides of the case.
What are the 3 types of expansion slots?
In this picture, there are three different types of expansion slots: PCI Express, PCI, and AGP.
Can you touch the bottom of a motherboard?
You’re not supposed to touch exposed metal on motherboards because you may have electrostatic charge on you from rubbing your feet on the carpet or moving your fingers through your hair (you may do it as a habit, without realizing) or just moving your hands and touching them by the clothes you have on your body,.
What information is stored in CMOS?
Like most RAM chips, the chip that stores your BIOS settings is manufactured using the CMOS process. It holds a small amount of data, usually 256 bytes. The information on the CMOS chip includes types of disk drives are installed, the current date and time of your system clock, and your computer’s boot sequence.
What task should be completed before escalating a problem to a higher level technician?
What task should be completed before escalating a problem to a higher-level technician? Verify full system functionality and, if applicable, implement preventive measures.
What factors must be considered when replacing old RAM modules in a PC?
Which two factors must be considered when replacing old RAM modules in a PC? New RAM module must be compatible with the current motherboard. In addition, the speed of the new RAM must be supported by the chipset. Dual channel RAM has two channels so that two memory modules can be accessed at the same time.
What three voltages are commonly provided by the power supply?
Explanation Computer power supplies typically deliver three voltages to various components inside the computer. These are 3.3 volts for CPUs, 5 volts for motherboard components, and 12 volts for disk drive motors.
When a new PC is being built which component has the most influence?
When a new PC is being built, which component has the most influence when selecting the case and power supply? Explanation: The choice of motherboard determines the type of case and power supply. The form factor of a motherboard must match the type of case and power supply.
What indicates that the charge on the CMOS battery could be getting low?
What indicates that the charge on the CMOS battery could be getting low? … (The computer time and date are held in CMOS. This requires power from a small battery. If the battery is getting low, the system time and date may become incorrect.)
Which two of the following must you ensure when replacing RAM memory modules?
The new RAM must be compatible with BIOS or UEFI. The new RAM must be compatible with the motherboard. The speed of the new RAM must be supported by the chipset.
What should be done prior to the installation of RAM onto the motherboard?
What should be done prior to the installation of RAM onto the motherboard? Consult the motherboard documentation or website of the manufacturer to ensure that the RAM is compatible with the motherboard. NOTE: Before you install a memory module it is important to verify that there are no compatibility issues.
What is a symptom of a failing power supply?
Symptoms of a failing computer power supply
Random computer crashes. Random blue screen crashes. Extra noise coming from the PC case. Recurring failure of PC components.
Which type of input device can identify users based on their voice?
biometric identification device
A biometric identification device is an input device that can identify a user based on a unique physical feature such as a fingerprint or voice. A digitizer is used with a stylus pen to design and create images or blueprints.
What is the function of the power supply?
A power supply is a device that converts one voltage to another more convenient voltage while delivering power. Power supplies are designed from the output back to the input.