Exam 6


WHAT TO KNOW

to ace your Comptia Core and OS Technologies A+ Certification Tests

with MOST of the type of questions you'll likely see on the new exams

Learn the tips and tricks of PC Service Technicians to help you repair computers.




Exam 1

Exam 2

Exam 3

Exam 4

Exam 5

Exam 6

Exam 7

Exam 8

Exam 9

Exam 10

Customer - "It says invalid system disk and the computer won't start"

Tech Support - "Is there a floppy disk in the drive"

Customer - "No it says Intel Inside"


Tech Support - "Now press any key to continue"

Customer - "Where's the Any key"


Monitors

CRT (Cathode Ray Tube) Monitors
three electron guns for red, green, and blue (RGB)
there is one dot for each RGB color group called a triad to form a pixel

Flat-Panel Displays
do not have electron guns OR rely on phosphors to create an image and therefore are flicker free
and consume less power than a CRT

LCD (Liquid Crystal Display) - uses electric currents and polarizable crystals
TFT or Active Matrix LCDs have sharper images when compared to CRTs but are very expensive


Video Memory

VRAM
dual ported RAM (can read and write data at the same time)

WRAM
dual ported with faster RAM than VRAM

SGRAM
not dual ported but masks writes to increase bandwidth


Interfaces

ATA (AT Attachment) -
also called IDE, used to support hard drives

ATA-2
also called EIDE, supports hard drives, CDROMs, and tape drives
max 16.6 MBps and 8.4 GB data support

Ultra ATA -
newer version of ATA that supports 33 MBps data transfers



1. To conserve conventional memory space, DOS=HIGH loads a part of DOS into high memory (1st 64K above 1MB) and despite its name DEVICEHIGH= loads device drivers into __?
upper memory
high memory
extended memory

2. If an electrical fire breaks out, you should use a(an) __ labeled fire extinguisher?
A
B
C

3. Memory module which has 144 pins, supports 64-bit data transfers, and is commonly found in notebook computers?
DDR
SIMM
SoDIMM

4. The network protocol used for the internet?
IPX/SPX
NetBEUI
TCP/IP

5. Registry key that keeps track of extensions that tells Win9x which program to use to open a file?
HKEY_USERS
HKEY_CLASSES_ROOT
HKEY_LOCAL_MACHINE

6. The best way you can protect your computer after a power blackout is__. This will totally eliminate the huge surge that comes when the power is restored?
UPS
surge suppressor
unplug the AC power and modem cables

7. Floppy drives have __ pin ribbon cables?
34
40
50

8. Memory which does NOT need to take the time to be refreshed hence is the fastest memory but is also the largest per MB and the most expensive?
SDRAM
SRAM
DRAM

9. A modem, MO (modulates) and DEM (demodulates) signals for use over your phone lines. When the signal is modulated it is ready to be sent over the telephone lines and its output is __?
analog
digital
AC

10. The winnt /ox and winnt32 /ox commands that you can use to create setup boot disks with Win NT4 do NOT work with Win2000. To make the four (4) boot disks for Win 2000 start by inserting the Win 2000 installation CD in the drive. Click Start > Run and type D:\bootdisk\___ where D:\ is the letter of your CDROM drive?
erd.exe a:
makeboot a:
setup.exe a:

11. To perform a remote install in Win 2000 using the RIS (Remote Installation Service) you need?
DNS
DHCP
all of the above

12. You can make a Emergency Repair Disk (ERD) in Win 2000 by ___ (hint: Win NT4 uses RDISK) ?
alternate click Ctl Panel > Device Manager
in DOS with Format c:/s
Programs > Access > System Tools > Backup

13. Joysticks, MIDI, and VGA all use 15-pin female connectors on the back of the PC. The way you can tell which is for your VGA is it has __ rows of pins?
2
3
7

14. The binary (base 2) number 0001001 is equivalent to a decimal (base 10) value of __ (hint: line the 0's and 1's up with 64 32 16 8 4 2 1 and add the numbers where there is a 1) ?
7
2
9

15. Unless you have been trained to service CRTs you should never open them because of its capacitors that can store charges as high as __ that can kill you even when unplugged?
3,000 v
30,000 v
120 v

16. depicts a __ port?
USB
AT DIN
PS/2

17. The oldest WAN (wide area network) protocol listed that uses packet switching over analog phone line with extensive error checking schemes?
X.25
ATM
SONET

18. Very few devices require a DMA channel. Floppies and sound cards usually do. The DMA channel set for floppies is __?
DMA 2
DMA 5
DMA 7

19. The term used to indicate devices that can be installed or removed with the power ON (PCMCIA, IEEE 1394 (Firewire), and USB devices all have this quality)?
red lining
handshaking
hot-swappable

20. The fastest and easiest to configure of these three major protocols but it is NOT routable?
NetBEUI
TCP/IP
IPX/SPX

Grade =
Correct answers are:




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