CertiGuide to A+ (Core Hardware)  9  Chapter 0111:  Peripheral Devices

IX  Summary 1 XI  Chapter 0111: Test for Success Answers

(Click here to see answers with explanations.)

1. What set of standards defines serial communications?

A. IEEE 8802

B. IEEE 1284

C. IEEE 1394

D. RS-232C

2. What two connectors are commonly used for serial communications?

A. Centronics 36

B. DB-15 female

C. DB-9 male

D. DB-25 female

E. DB-25 male

3. What parallel port mode uses a DMA channel?

A. PPP

B. Bi-directional parallel

C. ECP

D. EPP

4. Identify the connector shown in Figure 90:

A. USB A

B. USB B

C. DB-15

D. DB-25

5. What is the connector in Question 4 commonly used for?

A. VGA

B. Serial

C. Parallel

D. MIDI

6. What wireless communications method requires clear line-of-site?

A. Satellite

B. IrDA

C. Radio

D. FM

7. How many devices can be used in a USB chain?

A. 63

B. 15

C. 128

D. 127

8. How many IRQ’s would a USB chain with a mouse, keyboard, and printer use?

A. 1

B. 2

C. 3

D. 4

9. What is the theoretical bandwidth of a IEEE 1394 bus?

A. 12 Mb/s

B. 12 MB/s

C. 400 Mb/s

D. 400 MB/s

10. What is IEEE 1394 commonly used for?

A. Internal HDD

B. Keyboards

C. Mice

D. Digital Video Cameras

11. What type of printer is commonly used for printing multi-part forms?

A. Inkjet

B. Laser

C. Daisy wheel

D. Dot Matrix

12. You are servicing a laser printer. The pages come out of the printer with ghost images of the previous page. Which component do you suspect?

A. Primary corona

B. Transfer corona

C. Developing roller

D. HVPS

13. You are servicing a dot matrix printer that is shutting down sporadically. What should you replace first?

A. Print head

B. Ribbon

C. Paper feed rollers

D. Thermistor

14. What is the command for resetting a modem to its default settings?

A. Reset COM1

B. ATR

C. AT0

D. ATZ

15. You wish to dial 555-1212 with your modem using pulse dialing. You are in a building with a PBX that requires a 9 be dialed to reach an outside line. What command do you use?

A. ATD 5551212,9

B. ATDP 9,5551212

C. Dial 9,5551212

D. ATH1 9,5551212

16. What 'standard' for modems was named after its creator?

A. Baud

B. Hayes

C. V.90

D. Kflex

17. What step comes after the conditioning phase is a laser printer?

A. Cleaning

B. Developing

C. Writing

D. Transferring

18. What methods are used to transfer ink to paper in Inkjet technology? Choose two

A. Boiling ink

B. Vibrating crystals

C. Compressed air

D. Piston

E. Vacuum

19. What is the theoretical bandwidth of a USB 1.2 bus?

A. 12 MB/s

B. 12 Mb/s

C. 480 MB/s

D. 400 Mb/s

20. You find a cable that has a DB-25 male connector on one end, and a Centronics 36 male connector on the other. What type of cable is it?

A. IEEE 1284

B. IEEE 1394

C. Null modem cable

D. RS-232C cable

IX  Summary 1 XI  Chapter 0111: Test for Success Answers