study guide Flashcards
What type of output does S/PDIF port provide
digital audio
Which is faster, Highspeed USB port or super speed USB port
Super speed
List 5 types of video ports
VGA, S-Video, DVI, HDMI, Display port
what is the purpose of an expansion slot on a motherboard?
to provide more ports than what is provided on the motherboard
What should be the setting for dual voltage selector switch on a power supply when using a computer in the U.S.?
115V
What unit of measure used to describe the amount of work a surge suppressor can do before it stops protecting the circuit from an electrical surge
Joule
Hot wires in home wiring are _____ and ground wires in computers are normally colored _____
Black, Black
What is the difference between a transformer and a rectifier? Which are found in a PC power supply?
Transformer- changes the ratio of current to voltage
Rectifier - converts AC volts to DC volts
both are found in a power supply
What device can you use to make sure a computer is protected against power surges?
A surge suppressor
A power supply receives 120 volts of ____ from a wall outlet and converts it to 3.3, 5, and 12 volts of ___ power.
AC, DC
Why is the power supply dangerous even after the power is disconnected?
The capacitors inside the power supply still hold an electrical charge even after being disconnected
Which two tools can a PC support technician use when taking apart a computer to best protect computer components against ESD?
A ground bracelet and a grounding mat or anti-static gloves
What is the purpose of a POST diagnostic card?
It tests if the BIOS can communicate properly with essential components
What three purposes are accomplished by the motherboard BIOS?
System BIOS- manages devices such as mouse and keyboard
Start up BIOS- used to start the computer
CMOS - used to change the settings or configuration of the motherboard
What is the best way to determine if a cable inside a computer is a data and instruction cable or a power cable?
Trace it back to its source
What technology standard provides up to four drives installed in a system?
PATA (IDE)
How many pins does the P1 connector have that uses the ATX Version 2.2 standard?
24 pin or 20 + 4 pin connector
What is the purpose of the 4-pin auxiliary connector on a motherboard?
It provides an extra 12 volts of power
What is the purpose of the 4-pin Molex connector
Used to power IDE drives
You purchase a new computer system that doesnt have wireless capability. you decide to use a wireless connection to the internet. what are the least expensive ways to upgrade your system?
purchase a wireless expansion card and install it into your system
purchase a USB wireless adapter and connect it to your PC by way of a USB port
How much power is consumed by a load drawing 5 A with 120 V across it?
600 watts, (5*120) (amps * volts)
when working on a computer, which of the following best protects against ESD? why?
Grounding bracelet clipped to the side of the case, it eliminates ESD between you and the case
You suspect the network port on a computer is not functioning, what tool do you use?
Loopback plug
The system fails at the beginning of the boot and nothing appears on the screen, what tool do you use?
A Post Diagnostic card
A Hard drive is not working and you suspect the Molex power connector from the power supply might be the source of the problem, what tool do you use?
a power supply tester or a multimeter
When taking a computer apart, why is it important to not stack the boards on top of each other?
a chip could be dislodged
why is it important to remove loose jewelry before working inside a computer case?
it could get caught on the components that you are working on
When assembling a system, which do you install first, the motherboard or the drives?
the drives
What is the purpose of raised screw holes or standoffs installed between the motherboard and case?
to prevent the motherboard from shorting out on the case
When installing the front panel wires to the motherboard front pane header, how do you know which pins to use for each wire if the pins on the header are not labeled?
look at the motherboard user guide
What are two major components of a processor cooler assembly?
Heatsink and fan
How many pins does the CPU fan header on a current motherboard have?
4 pins
if the power connector from the CPU fan has only three pins, it can still connect to the 4 pin header, but what functionality is lost?
Pulse width modulation (PMW)
How do you determine the wattage capacity needed by a power supply?
Add up the watts used by each component and add an additional 30% to the total
Which one component in a high-end gaming computer is likely to draw the most power?
the video card
You disassemble and reassemble a computer. when you first turn it on, you see no lights and hear no sounds. Nothing appears on the monitor screen. What is most likely the cause of the problem?
Power cords to the motherboard are not connected
How much power is consumed by a load drawing 5 A with 120 V across it?
600 watts
what is a reasonable wattage capacity for a power supply that contains a DVD drive, three hard drives, and a high-end video card?
700 watts
When overclocking a system, what two problems are most likely to occur?
An unstable system that causes intermittent errors and overheating
List four major functions of an OS
Provide user interface, manage files, manage hardware, manage applications
Using Aero Snap, what happens when you drag a window to the top of the Windows 7 desktop?
It maximizes the window
How can you add a program icon to the Windows 7 taskbar so the program can be launched at anytime?
Locate the program, right click, then click pin to taskbar
What might happen to the windows system if too many services are running, as indicated by multiple icons in the notification of the task bar?
Windows my become sluggish
What is the keyboard shortcut to flip to a 3D view?
Windows key + Tab Key
What are the 4 libraries created by default?
Music, Video, Documents, Pictures
What part of the filename dose Windows use to know whch application to pen to manage the file?
the files extension
What file extension is used to name a compressed folder?
.zip
which folder does windows use to store files a user puts in the Documents library?
My Documents folder
Which Windows 7 edition(s) came only in 32-bit version?
Windows 7 Starter
What is the memory limitations for a 32-bit operating system?
4 GB
How do you access the property box for a file to change a file attribute?
From computers icon, right click the file or folder and select properties
What is the program name for the System Information utility?
msinfo32.exe
When does a user need to enter a password into the UAC in order to continue?
when performing administrator tasks
What tool can yyou use to know how much RAM is installed on your system?
msinfo32.exe
Mary wants her 32-bit installation of Windows 7 Professional to run faster. She has 4 GB of memory installed on the motherboard. She decides more memory will help. She installs an additional 2 GB of memory for a total of 6 GB, but does not see any performance improvement. What is the problem and what should you tell Mary?
A 32-bit OS cannot use more than 4 Gb of memory. Explain to Mary the problem and discuss with her the possible solutions
Jack needs to email two documents to a friend but the files are so large his email server bounced them back as undeliverable. What is your advice?
Tell Jack to put the two documents in a compressed folder and email that folder
For each of the following programs, identify if the program is an operating system, application, device driver, or utility program: Internet Explorer, Norton Antivirus, Windows 98, Adobe Photoshop
Internet Explorer - application
Norton Antivirus - utility program
Windows 98 - operating system
Adobe Photoshop - application
What are the three most popular form factors used for motherboards?
ATX, micro ATX, Mini-ITX
Which type of Intel chipset was the first to support the graphics controller to be part of the processor?
Sandy Bridge
How many pins does the Intel Socket B have? What is another name for this socket?
1366 pins, LGA1366
What type of memory does the LGA1155 socket work with? which socket was it designed to replace?
DDR3 memory and it was designed to replace the LGA1156
Does the Sandy Bridge chipset family use two chipset housings on th motherboard or a single chipset housing? The Nehalem chipset?
Sandy Bridge uses only one chipset
Nehalem chipset uses more than one
How many pins does the AMD socket AM2 have?
940 pins
Which socket by AMD uses a land grid array rather than a pin grid array?
Socket F
Which is better performing Intel chipset, the X58 or the H67
H67
What are the names of the two technologies used to install multiple video cards in the same system
SLI and Crossfire
What are the two different voltages that a PCI slot can provide?
3.3 or 5 volts
How does the throughput of PCI express version 1.1 compare to PCIe version 1? How does the PCIe version 2 compare to Version 1?
Throughput of PCI Express Version 1.1 is the same as Version 1, which is 250 MB/sec per lane in each direction. Version 2 is doubled, which allows up to 500 MB/sec per lane in each direction
What is the maximum wattage that a PCIe Version 2.0 expansion card can draw?
300 watts
What new type of power connector on the motherboard was introduced with PCIe Version 1.0? How much power does this connector provide?
6 pin PCIe power connector. 75 Watts
What new type of power connector was introduced with PCIe Version 2.0? How much power does this connector provide?
Its a new 8-pin PCIe connector that provides 150 watts
If you are installing an expansion card into a case that does not have enough clearance about the motherboard for the card, what device can you use to solve the problem?
a PCI riser card
What is the purpose of an AGP slot?
for video cards
Which is faster, PCI express x16 or the latest AGP bus
PCI express x16
Which chip on the motherboard does Windows Bitlocker Encryption use to secure the hard drive?
The TPM chip
What are two reasons you might decide to flash BIOS?
The system can hang at odd times or during the boot.
You want to incorporate some features or components on the board
How can you find out how many memory slots are populated on a motherboard without opening the computer case?
BIOS Setup
What is the easiest way to obtain the latest software to upgrade BIOS?
Express BIOS update
What can you do if the power-on password and the supervisor password have been forgotten?
Jumpers can be set to clear both passwords
Where is the boot priority order for devices kept?
BIOS Setup
How is CMOS RAM powered when the system is unplugged?
A lithium coin-cell battery allows the CMOS RAM to hold data
Describe how you can access the BIOS setup program
During the boot process you either press a key or a combination of keys to enter the BIOS setup program
If a USB port on the motherboard is failing what is one task you can do that might fix the problem?
Use the BIOS to disable the port and use an expansion card for the port
What might the purpose be for a SATA-style power connector on a motherboard?
It supplies additional power for PCIe video cards
What is the purpose of installing standoffs or spacers between the motherboard and the case?
to prevent the motherboard from shorting out on the case
When installing a motherboard, suppose you forgot to connect the wires from the case to the front panel header. Will you be able to power up the system? Why or why not?
No, the power button wont work until the power wire is connected to the motherboards
Why does a motherboard sometimes support more than one Front Side Bus speed?
To support the number of processors and memory that differ in speed
Why don’t all buses on a motherboard operate at the same speed?
different processors and chipsets operate at diferent speeds
When you turn off the power to a computer at night, it loses the date, and you must reenter it each morning. What is the problem and how do you solve it?
The CMOS battery has ran out of power. To fix it test and replace the battery
Why do you think the trend is to store more configuration information on a motherboard in CMOS RAM rather by using jumpers or switches?
It accesses the configuration information faster
Why do you think the trend is to put more control such as graphic controller and the memory controller in the processor rather than in the chipset?
It allows more speed on the processor
When troubleshooting a motherboard, you discover the network port no longer works. What is the best and least expensive solution to this problem?
First try updating the motherboard drivers first. If that doesn’t work, disable the network port and install a network card in an expansion slot
A computer freezes at odd times. At first, you suspect the power supply or overheating, but you have eliminated overheating and replaced the power supply without solving the problem. What do you do next?
Test and if needed replace the processor
Who are the two major manufacturers of processors?
Intel and AMD
What is the name of the memory cache that is on the same die as the processor?
L1 Cache
What is the name of the memory cache that is closest to the processor die bus on housed on the die?
L2 Cache
What is the name of the Intel technology that allows a processor to handle two threads at the same time?
Hyperthreading
How many threads can a quad-core processor handle at once?
8 threads
Which Intel processor socket uses a screw head to hold down the socket load plate?
LGA1155
Which is faster, SRAM or DRAM? Why?
SRAM, DRAM needs a refresher which takes longer
How many pins are on the DDR3 DIMM? DDR2 DIMM?
Both have 240 pins
How many pins are on the DDR DIMM? SDRAM DIMM?
DDR DIMM has 184 pins.
SDRAM DIMM has 168 pins
How many notches does a DDR3 DIMM have?
One notch
What was the first type of DIMM that ran synchronized with the system clock?
SDRAM
What major improvements did DDR make over regular SDRAM?
It doubles the data rate of memory and runs twice as fast
Which DIMM performs better, a double-sided dual-ranked DIMM or a double-sided single-ranked DIMM?
Single-ranked DIMM
What prevents a DDR DIMM from being installed in a DDR2 DIMM slot on a motherboard?
Notch placement and number of pins
Which module, a DDR3 or DDR2 DIMM, uses lower voltage?
DDR3
In a memory ad for DIMMs, you notice 64Meg x72 for one DIMM and 64Meg x64 for another DIMM. What does the 72 tell you about the first DIMM?
It has ECC
A DIMM that contains memory chips in two memory banks on the module is said to be _____________.
Dual ranked
What type of DIMM supports triple channeling?
DDR3
If two bits on a byte are in error when the byte is read from ECC memory, can ECC detect the error? Can it fix the error?
ECC can detect the error but not fix it
How many notches are on SDRAM DIMM?
Two
Looking at an SDRAM DIMM, how can you know for certain the voltage needed by the module?
By the location of the notches
A DIMM memory ad displays 5-5-5-25. What is the CAS Latency value of this DIMM?
CL5
What is the most amount of RAM that can be used by a 32-bit installation of Windows 7 Professional?
4 GB
A motherboard uses dual channeling, but you have four DIMMs available that differ in size. The motherboard supports all four sizes. Can you install these DIMMs on the board? Will dual channeling be enabled?
You can install all four but dual channeling wont be enabled
You need to upgrade memory on a motherboard that uses RIMMs. You notice one RIMM and one C-RIMM module are already installed on the board Which module should you replace?
C-RIMM
What two types of memory can be used on a 100-MHz motherboard?
SDRAM and DDR
Which is faster, CL3 or CL5 memory?
CL3
You are looking to purchase two DIMMs running at 400 MHz. You find DIMMs advertised at PC4000 and PC3200. Which do you purchase?
PC3200
You need to find out how much RAM is installed in a system. What command do you enter in the Search box to launch the System Information utility?
msinfo32.exe
Although ECC memory costs more than non-ECC memory, which would you choose to use it? Which type of computer typically requires ECC memroy?
Its more reliable than non-ECC memory. It used in computer that cannot tolerate data corruption.
You need to upgrade memory in a system but you don’t have the motherboard documentation available. You open the case and notice that the board has four DIMM slots; three slots are colored yellow and one slot is black. What type of DIMM does the board likely use? how can you be sure?
DDR3. Remove the module and look at the notch position
If your motherboard supports DIMM memory, will RIMM memory still work on the board?
No