IT Essentials Chapter 2 Quiz Answers Online

Any cans or bottles that contain solvents used in computer cleaning or repair should be handled with care and treated as hazardous waste.

An antistatic wrist strap equalizes the electrical charge between the technician and the equipment and protects the equipment from electrostatic discharge.

The Windows System File Checker (SFC) can scan and automatically repair corrupted system files. Chkdsk is used to verify the integrity of the file system on a hard drive. Fdisk is used to create and delete partitions on the disk. Defrag is used to optimize the space on a hard drive for faster access.

Electromagnetic Interference (EMI) is a type of interference that can be caused by motors. A device that supplies a constant level of electrical power to a computer is called an uninterruptible power supply (UPS). ESD is the buildup of static electricity and it can cause damage to electronic components when it is discharged through them.

Basic safety procedures to use while fixing a computer include the following: 1) Remove all jewelry and secure clothing such as ties and ID badge. 2) Turn off the power to all devices. 3) Cover sharp edges with tape. 4) Never open a power supply. 5) Know where the fire extinguisher is and how to use it. 6) Keep your workspace clean and free of clutter. 7) Bend your knees when lifting heavy objects.

A crimper is used to attach wires to an RJ-45 connector. A punch down tool is used when terminating network cabling. A toner probe has one part that connects to a cable at one end and the toner probe is used to determine which jack or port terminates the cable at the other end. A loopback adapter would be used to check the functionality of a computer port such as the RJ-45 NIC.

Cleaning the outside of the computer and the mouse can be done with glass cleaner and a soft cloth.

Radio Frequency Interference (RFI) is the interference that is caused by radio transmitters and other devices that are transmitting in the same frequency.

Laser printers require high voltage when initially powered on and to charge the drum in preparation for writing data to the drum. This high voltage requirement is why most laser printers are not normally connected to a UPS. A laser printer also has a fuser assembly used to apply heat and pressure to the toner to permanently attach it to the paper. The laser printer must be unplugged and the fuser assembly must be allowed to cool before working inside the printer.

Use the correct size hex driver to loosen and tighten bolts with a six-sided head.

The Disk Management utility is used to create or delete different types of partitions on a hard disk. The partitions are then formatted with an appropriate file system using the format tool. Chkdsk, Defrag, and SFC are tools used to perform other disk management tasks.

Documentation can be paper-based or stored electronically. It is important that a technician document all services and repairs so that technicians will have this documentation as a reference for similar problems in the future.

The Safety Data Sheet (SSD) summarizes information about materials, including hazardous ingredients, fire hazards, and first-aid requirements.

A technician should keep a journal that documents upgrades and repairs. This is a valuable resource for future situations as well as providing reference when providing the formal documentation and invoice.