1. A technician accidentally spills a cleaning solution on the floor of the workshop. Where would the technician find instructions on how to properly clean up and dispose of the product?
- the insurance policy of the company
- the regulations provided by the local occupational health and safety administration
- the safety data sheet
- the local hazardous materials team
Explanation: The Safety Data Sheet (SSD) summarizes information about materials, including hazardous ingredients, fire hazards, and first-aid requirements.
2. What is a characteristic of thin clients?
- They perform all processing tasks internally.
- They require a network connection to access storage and processor resources.
- They require large amounts of fast RAM.
- They are able to run multiple operating systems simultaneously.
Explanation: A thin client device is typically a type of low-end computer that does not perform any processing or data storage locally. A thin client relies on a network connection to access any resources required to perform computing tasks and operate software.
3. What indicates that the charge on the CMOS battery could be getting low?
- A beep error code occurs during POST.
- The computer time and date are incorrect.
- The computer fails to boot.
- Performance while accessing files on the hard drive is slow.
Explanation: 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.
4. Which website should a technician consult to find instructions for updating the BIOS on a computer?
- operating system developer
- case manufacturer
- CPU manufacturer
- motherboard manufacturer
Explanation: Go to the motherboard manufacturer site to get the correct software to update the BIOS.
5. When a dual core CPU with Hyper-Threading features is installed on a motherboard, how many instructions can the CPU simultaneously process?
- 6
- 4
- 8
- 2
Explanation: With Hyper-Threading, two pieces of code can be processed simultaneously by a single core.
6. Which hardware upgrade would allow the processor in a gaming PC to provide the optimal gaming performance?
- a high capacity external hard drive
- large amounts of fast RAM
- liquid cooling
- a fast EIDE drive
Explanation: Faster RAM will help the processor to keep all of the data in sync because the data that it needs to calculate can be retrieved when it is needed.The more RAM that the computer has, the less often the computer needs to read from slower storage such as hard drives or SSDs.
7. Which specialized computer component would be most important for a workstation built for audio and video editing?
- a TV tuner card
- a high speed wireless adapter
- a specialized video card
- a liquid CPU cooling system
Explanation: Computers designed for audio and video editing will need specialized inputs and outputs for recording and playback equipment. This requires an audio and video card that can handle the variety of inputs and outputs needed.
8. A network administrator is setting up a web server for a small advertising office and is concerned with data availability. The administrator wishes to implement disk fault tolerance using the minimum number of disks required. Which RAID level should the administrator choose?
- RAID 5
- RAID 0
- RAID 1
- RAID 6
Explanation: Both RAID 0 and RAID 1 require at least 2 disks. However, RAID 0 does not provide fault tolerance. The minimum numbers of disks for RAID 5 and RAID 6 are 3 and 4 respectively.
9. Where is the saved BIOS configuration data stored?
- cache
- CMOS
- hard drive
- RAM
Explanation: The BIOS configuration data is saved to a special memory chip called a Complementary Metal Oxide Semiconductor (CMOS).
10. What are two settings that can be modified in the BIOS setup program. (Choose two.)
- device drivers
- swap file size
- enabling and disabling devices
- drive partition size
- boot order
Explanation: The BIOS setup program is used to change settings if memory modules, storage devices, and adaptor cards are added. Most manufacturers provide the ability to modify boot device options, security and power settings, and adjustments for voltage and clock settings.
11. Which device can protect computer equipment from brownouts by providing a consistent quality of electrical power?
- AC adapter
- surge suppressor
- SPS
- UPS
12. Which term refers to the technique of increasing the speed of a processor from the specified value of its manufacturer?
- hyperthreading
- overclocking
- throttling
- multitasking
Explanation: Overclocking is a technique that is used to make a processor work at a faster speed than its original specification. Overclocking is not a reliable way to improve computer performance and can result in damage to the CPU.
13. Which definition describes the term “overclocking”?
- modifying the motherboard clocking crystal to increase the timing signals
- changing the bus speed of the motherboard to increase the speed of attached adaptors
- replacing slower SDRAM with faster memory
- increasing the speed of the CPU beyond the recommendations of the manufacturer
Explanation: Increasing the CPU clock speed will make the computer run faster, but also generate more heat and cause overheating issues.
14. What unit is used to measure the amount of resistance to the flow of current in a circuit?
- watts
- ohms
- volts
- amps
Explanation: The resistance of a circuit to the flow of current is measured in ohms (O). Amps (A) measure the amount of electrons moving through the circuit. Watts (W) measure the work required to move electrons through the circuit. Volts (V) measure the work required to move a charge from one location to another.
15. Which term is used to describe the best monitor resolution for a specific monitor?
- native mode
- screen resolution
- monitor resolution
- native resolution
Explanation: Native resolution identifies the best monitor resolution for a specific monitor. In Windows 10, the native resolution of a monitor is identified using the keyword (Recommended) beside the monitor resolution.
16. When upgrading the CPU, which of the following requirements must the replacement CPU meet? (Choose two.)
- The new CPU must be compatible with the motherboard chipset.
- The new CPU must use new cables to connect.
- The new CPU must have a different heat sink and fan assembly.
- The new CPU must operate with the existing motherboard and power supply.
Explanation: One way to increase the power of a computer is to increase the processing speed. You can do this by upgrading the CPU. However, the CPU must meet the following requirements:
– The new CPU must operate with the existing motherboard and power supply.
– The new CPU must be compatible with the motherboard chipset.
– The new CPU must operate with the existing motherboard and power supply.
The new CPU might require a different heat sink and fan assembly. The assembly must physically fit the CPU and must be compatible with the CPU socket. It must also be adequate to remove the heat of the faster CPU.
17. Which connector is a small, proprietary 8-pin connector used by Apple mobile devices such as iPhones, iPads, and iPods for both power charging and data transfer?
- USB Type-C
- DisplayPort
- Thunderbolt
- Lightning
Explanation: The Lightning connector is a small, proprietary 8-pin connector used by Apple mobile devices such as iPhones, iPads, and iPods for both power charging and data transfer. It is similar in appearance to a USB Type-C connector.