Homework 2
Grade 10 Computer Science
_______________ Student Name: Section 10:___
True/False
Indicate whether the statement is true or false.
____ 1. The NIK keyboard is flexible, can be rolled up and put into a briefcase, and even washed with soap and water or a spray cleaner.
____ 2. A laser virtual keyboard easily connects to any PC or smart phone.
____ 3. The most common type of pointing device for PCs is the keyboard.
____ 4. CRT panels produce an image by manipulating light within a layer of liquid crystal cells.
____ 5. Print quality is measured in ppm.
____ 6. The amount of ROM helps to speed up the processing cycle and to enhance the computer’s performance.
____7. The higher the CPU generation, the faster and better the processing speed.
____8. To improve computer performance dramatically, increase the amount of RAM on your computer.
____ 9. Do not plug a laser printer into a UPS.
____ 10. A UPS contains a battery that temporarily provides power if the normal current is interrupted.
____ 11. When eliminating a paper jam, always pull the paper in the opposite direction of the paper path.
____ 12. Damaged and poorly maintained cables can prevent peripheral devices from communicating with the computer.
____ 13. Cable management kits are available only through computing professionals.
____ 14. When a computer is new, the operating system writes data in side-by-side clusters.
Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
____ 1. The trackball is a pointing device that works like a mouse turned upside down.
____________________
____ 2. Examples of video input devices are microphones and CD/DVD players. __________ audio __________
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____ 3. A(n) laser printer produces images using the same technology as copier machines.
____________________
____ 4. A(n) pointing stick and digital pen are pen-like writing instruments you use to enter information by writing on a screen on a mobile device. _______ stylus ________
____ 5. UPS stands for Uninterruptible power supply.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 1. Which of the following is NOT a type of keyboard? a. ergonomic c. optical d. security b. wireless
____ 2. Sensors inside a(n) ____ mouse determine the direction and distance of the movement. a. mechanical b. optical c. wireless d. trackball
____ 3. A(n) ____ mouse uses a laser to detect the mouse’s movement. a. mechanical b. optical c. wireless d. trackball
____ 4. Which of the following is NOT true about mice? a. Most mice have two or three buttons. b. Generally, clicking the right mouse button displays a shortcut menu. c. Double-clicking selects a paragraph of text. d. You use the left mouse button for most operations.
____ 5. A(n) ____ is a pressure-sensitive pointing device on a notebook computer that looks like a pencil eraser. a. touchpoint b. touchpad c. trackball d. pointing stick
____ 6. Which of the following is NOT true about monitors? a. They are a display device typical of desktop computers. b. Screen output is called hard copy. c. The CRT was one of the earliest types of computer monitors. d. LCD and gas plasma are types of flat-panel monitors.
____ 7. Laser printers and inkjet printers are examples of ____ printers. a. nonimpact c. obsolete b. impact d. specialized
____ 8. Which of the following types of keyboards is designed to provide users with a more natural and comfortable hand, wrist, and arm position? a. security b. cordless c. ergonomic d. wireless
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____ 9. ____ procedures should place a priority on files that would be difficult or impossible to replace or reconstruct if they were lost. a. Backup c. Encryption d. Recovery b. Security
____ 10. Which of the following is NOT true about data backup? a. Backup disks enable you to restore c. Large organizations have secure data. backup procedures that include a b. You should back up data to your hard drive. regular schedule for backing up files. d. Data backup systems includes tape devices.
____ 11. The above figure is an example of a(n) ____. a. surge suppressor c. SPS b. UPS d. power strip
____ 12. SPS stands for ____ Power System. a. Sustainable c. Standby b. Special d. Serial
____ 13. If the printed image is faded, it could be because of all of the following conditions
EXCEPT: ____. a. the printer’s fuser assembly might be c. the print density is set too low damaged b. the toner is low d. economy mode printing is turned on
____ 14. Disk ____ occurs when data is broken up into many pieces that are not stored close together. a. fragmentation b. defragmentation c. sectoring d. seek time
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