LEARNING OBJECTIVES
1. To learn the common secondary storage devices and
their basic characteristics.
2. To learn the common input devices and their basic
characteristics.
3. To learn the common output devices and their basic
characteristics.
4. To learn to compare computers by power and use.
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SECONDARY STORAGE
DEVICES
These storage devices are
also Input/Output
devices.
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Secondary Storage Devices
• Secondary Storage
 Stores large amounts of data, instructions,
and information more permanently than
main memory.
Devices for secondary storage
Magnetic disks
SSD Solid State Disks
Hybrid: SSD + Magnetic Hard Drive
DVD – Digital Video Disks
CD - Compact Disks
Blu-ray Disks
RAID (Redundant Array of Inexpensive Disks)
Flash memory
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Hard Drives (SATA)
Hard drives
NEWER TECHNOLOGY
• SATA
 Serial Advanced Technology
Attachment
 Transfer Rate (Maximum)
 150MB/S TO 300MB/S
 Capacity (Maximum)
 40GB to 4.0 TB
 TeraByte = 1,000 billion bytes
 Access Time
 Price.
 $31 to $159
 6-12 ms
 Number of Drives Supported
 One drive per port.
 RPM
 Revolutions Per Minute
 5400 to 7,200 (Some, 10,000)
 2 MB to 64MB Cache (buffer)
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Solid State Drives-SSD (SATA)
Characteristics:
•Company: SanDisk
•Mostly for notebooks.
•32-60-120-240-1,000 GB flash memory
•2,000,000 hours (228 years) between failure
•Access time: 0.12 milliseconds
•Power: 0.4 to 1.0 watts
•100 times faster than any hard drive for random access.
•5 times faster that any hard drive for sequential access.
•As fast as a magnetic drive spinning at 40,000 RPM
•Uses PATA and SATA
•Cost: 159 (120 GB) and $199 (240 GB)
•Main advantages: Fast, low failure rate, low power requirement,
non-volatile, will replace hard drives in laptops, but can be used in
desktops.
•LATEST NEWS ON SanDisk Drives
Solid State Drives-SSD (SATA or PATA)
Price: Sept 2013
128 GB: $99
256 GB: $179
512 GB: $379
960 GB: $569
Features
Available in 128GB, 256GB, 512 GB, 960 GB capacities
Interface: SATA III
Read speed 540 MB/second
Write speed 410 MB/second
Shock Resistant: 1500G/0.5ms
Vibration Resistant: 20G/10~2000Hz with 3 Axis
Operating Consumption & Power: DC 5V 2.75W
MTBF: >2,500,000 Hours
Data Retention: 5 years at 25°C
O/S Support: Linux, Mac OS X®, and Windows 7 & 8
10 Year Warranty
Latest SSD: TigerDirect
Hybrid Drive (SATA)
Hybrid Drive
Features both SSD and traditional HD
1 TB
Price: $129.00
Key Features and Benefits
•Boots 40 percent faster than traditional 7200-RPM drives (for overall system performance, that's within
1% of an SSD*)
•Cuts costs by 75 percent compared to SSDs by combining solid state and hard drive technologies
•Delivers the perfect balance of speed and capacity
•Uses Adaptive Memory technology to optimize performance in real time by storing frequently used files
and data on the solid state drive component
•Ensures compatibility with any operating system or application with a standard 9.5mm notebook drive
form factor and the characteristics of a traditional 7200RPM drive
•Offers all the benefits of SSD performance with the high capacity, storage, battery life, power consumption
and heat generation of a traditional hard drive
Hard Drives (SATA)
Four SATA cable connections for connecting
drives to Motherboard.
4 drives
max.
8
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USB drives (External)
USB External Hard drive
• INTERFACE
• USB 2.0
• USB 3.0.
• STORAGE
• 80 GB TO 4 TB
• TRANSFER RATE
• 60 MB/S
• PRICE
• $159 TO $59
• NEED EXTERNAL TRANSFORMER.
• TYPICALLY USED TO BACK UP FILES.
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USB drives (External)
USB External Hard drive
• BACKUP WITH NORTON GHOST
• GHOST CAN BACKUP INDIVIDUAL FILES OR THE
ENTIRE C: DRIVE IMAGE.
• If your C: drive completely fails, using Ghost you can copy the
complete C: drive image onto the new drive from the external
drive that has the image, and go....
Thus, in a few minutes your "back in business."
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Flash USB drives (External)
FLASH DRIVE (USB)
•STORAGE
•4 GB TO 128GB
•USES FLASH MEMORY
•IS NON-VOLITLE
•TRANSFER RATE
• 14 MB/S TO 30 MB/S
•PRICE
• $15 TO $129
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Flash SD drive
$53.00
$194.00
32/ 64GB Secure Digital (SD) memory card
• Great for inserting into SD socket in a laptop and use it as a drive D:
• Great as a second drive in laptop.
• Uses flash memory technology.
• Fits flush into the side of a laptop.
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DVD Read-Write (DVD-RW)
4.7 GB
DVD – Digital Video Disk
DVD SPEEDS:
•DVD-R/RW (16x8x16x)
•DVD-Write 16x, DVD-ReWrite 8x, DVD-Read 16x
PRICE:
•$45 to $150
Speed multiplier with DVDs:
•x = 1.3 MBps
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DVD Read-Write (DVD-RW)
Smaller Pits, Narrower Track Pitch Inside
On the inside, a DVD is totally different. Its pits
are half the size of CD pits (0.4µm vs. 0.83µm),
and it's tracks are spaced about twice as close
together (0.74µm vs. 1.6µm). See following
image...
650-800 MB
CD disk
4.7 GB
DVD disk
22
Blu-ray Disc
Blu-ray Disc
12x (Write) 2x (ReWrite) 6x (Read)
• Encodeing: MPEG-2, MPEG-4, VC-1
• (VC-1: Video Code by MicroSoft) (MPEG: Motion Picture Experts Group)
• Capacity 25 GB (Single Layer)
50 GB (Double Layer)
More Information
Blu-ray Disc (BD)
Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage medium.
Its main uses are high-definition video and data storage. The disc has the same
physical dimensions as standard DVDs and CDs.
The name Blu-ray Disc is derived from the blue laser (violet-colored) used to
read and write this type of disc. Because of the wavelength (405 nanometres),
substantially more data can be stored on a Blu-ray Disc than on the DVD format,
which uses a red (650 nm) laser. A two-layer Blu-ray Disc can store 50
gigabytes, almost six times the capacity of a two-layer DVD, or ten and a half
times that of a single-layer DVD.
The shorter the wavelength, the more data that can be stored in the same
amount of space. The wavelength of a blue light laser (Blu-ray) is shorter
than the wavelength of a red light laser (DVD).
Input Devices
28
Input
Source data automation
 Capturing and editing data where the data is
originally created and in a form that can be
directly input to a computer.
27
POINT OF SALE DEVICE (POS)
MAGNETIC STRIP / BARCODE READERS
RFID
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POINT OF SALE DEVICE (POS)
MAGNETIC STRIP / BARCODE READERS
Apple iTouch
with barcode
reader and magstrip reader adapter.
Barcode and Magstrip reader
• Reads barcodes
• Reads Magstrips
• Transmits data using WiFi into a network
• The iTouch slides into the scanner unit.
• $549 for scanner only. iTouch sold seperately.
28
POINT OF SALE DEVICE (POS)
Self-checkout Register
Questions:
• Advantages
• Disadvantages
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TOUCH SCREEN
In the future, what types of interaction with
an information system may be possible
for checking in for a flight at an airport?
Passenger check-in system at an airport.
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TEST FORM SCANNER
Apperson Print Management test form scanner.
• Scanner used in this class
• Scans test form results directly into a grading package.
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KEYBOARD
Wireless Keyboard
28
MOUSE/TRACKBALL
Mouse
Trackball
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DRAWING TABLET
Drawing Tablet
28
TIME CLOCK
Each employee’s finger print is stored
on the company computer connected to
this time clock. The location of the finger
print is determined by the employee’s ID
number. In other words, the address of
the finger print on the hard disk is the
employee’s ID number.
Questions:
• Advantages of the system
• Disadvantages of the system
Operation:
• The employee enters their ID number. The
ID number is used to locate the exact location
of the finger print for this ID number.
• The employee places their finger on the
finger print reader.
• The system looks for a match between the
stored finger print on the Hard Disk and
the one being read by the reader.
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FINGERPRINT SCANNERS
Fingerprint Scanner
• $32.00 and up
• ID < 1 second
Fingerprint Scanner
• $32.00 and up
• ID < 1 second
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FINGERPRINT SCANNERS
Say goodbye to password hassles. Now you can log on to your computer and your
favorite websites with the touch of your finger, without having to remember all those
passwords - simply place your finger on the receiver whenever a password or username
is required.
Easy-to-use software makes replacing passwords with your fingerprint a breeze. The
Registration Wizard helps you register fingerprints for each user. When you first visit a
site that requires a password, just touch the Fingerprint Reader with your registered
finger, enter your data, and then click OK. When you browse back to that website, you
can simply log on with your fingerprint. You can also use the Fingerprint Reader to
quickly switch between Windows user accounts without closing programs and files and each user's personal content stays personal.
28
IRIS ID SCANNERS
2 min
IRIS Identification Scanner
• $206.00 - $1,300.00
• Less than 1 seconds to authorize.
• The human iris is absolutely unique,
even between twins or an individual's right
and left eyes.
28
Fingerprint Reader
Notebooks
Fingerprint
Reader
28
Chip Implant in Brain
Monkey can control a robotic arm using a chip in its brain.
Mind control chip in monkey’s brain 2 min
28
Chip Interacting with Brain
Brain cells can be fused with electronic chips so that the
chip and the cells interact.
Chip meets the brain
3.3 min cc
28
RFID (Radio Frequency ID)
Transponder
Reader
How RFID works:
• The transponder is energized by the reader. The transponder then
sends the reader information that is stored in it, such as a product ID
code.
28
RFID (Radio Frequency ID)
Mobile-Commerce Payment Mechanism with
Texas Instrument's RFID technology.
28
RFID (Radio Frequency ID)
Best Buy will start using RFID in January or February of 2006
28
RFID (Radio Frequency ID)
Corporations, government to track
your every move.
New book 'SPYCHIPS' sets out
disturbing scenario using RFID
technology
Leading Journal on RFID
28
RFID (Radio Frequency ID)
Know this article
© 2005 WorldNetDaily.com
"Can a microscopic tag be implanted in a person's body to track his
every movement? There's actual discussion about that. You will rule on
that – mark my words – before your tenure is over."
– Sen. Joseph Biden, to Judge John Roberts at Supreme Court
confirmation hearings, Sept. 12, 2005. Imagine a world of no more
privacy, where hidden radio frequency scanners will be constantly
pointed at you, wirelessly reading microchips embedded in your
clothing, shoes, bank cards and even your own flesh.
It's the ultimate in "Big Brother," and according to the explosive new
book "SPYCHIPS: How Major Corporations and Government Plan to
Track your Every Move with RFID," companies including Wal-Mart,
Target, Gillette, Proctor & Gamble, Kraft, IBM and even the U.S.
government have all invested in making such a scenario a reality within
the next decade.
28
RFID (Radio Frequency ID)
Welcome to the world of Radio Frequency Identification, or
RFID, where tiny computer chips smaller than a grain of sand
will track everyday objects – and even people – keeping tabs on
everything you own and everywhere you go.
While it sounds far-fetched and futuristic, it's already here and
documented in "SPYCHIPS," written by Katherine Albrecht
and Liz McIntyre. These two privacy advocates have uncovered
extraordinarily detailed plans to use this new technology to
watch U.S. citizens.
Revelations in the book include IBM's blueprint for a "Person
Tracking Unit" that scans the RFID tags on unwitting members
of the public as they move through retail stores, airports, train
stations, elevators, libraries, theaters and even public restrooms.
They intend to follow your every move.
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RFID (Radio Frequency ID)
Nokia is developing an RFID-reader cell phone that could be used
to scan people and inventory their belongings as they walk past
on the street. Bank of America has cooked up a "Crowd
Identification Device" to scan RFID tags on the things people are
wearing and carrying to pinpoint, identify and bombard them
with targeted audio advertising messages. There is even an RFID
armband that delivers a dose of paralyzing medication or an
electroshock to subdue individuals.
These are just a few of the patents and patent applications
revealed in "SPYCHIPS" that major corporations and the U.S.
government have planned. The book chronicles efforts to keep
these plans a secret, revealing the contents of confidential
industry documents and outlining plans to "pacify" the public,
co-opt public officials and develop spin to ensure the adoption of
the RFID infrastructure.
28
RFID (Radio Frequency ID)
The book also discusses the industry's more underhanded tactics, like a foiled
plot by the Grocery Manufacturers of America to mount a smear campaign
against author Katherine Albrecht. As the authors were researching the book,
illegal efforts were made by unknown persons to gather intelligence on them,
including siphoning telephone records and targeting bank records. Someone
even contacted their friends and family to probe for information, the authors
say.
Hundreds of millions of dollars have already been invested in what global
corporations are calling the hottest new technology since the bar code – and
billions more are in the balance. Wal-Mart's top suppliers are already on
board with RFID tracking, and high-level former government officials like
Tommy Thompson and Tom Ridge have joined the boards of major RFID
companies. In fact, Thompson, former secretary of health and human services,
now sits on the board of the VeriChip human implant company and has publicly
suggested RFID implants for us all.
"Spychips could strip away our last shreds of privacy and usher in a
nightmare world of total surveillance – to keep us all on Big Brother's very
short leash," say the authors
28
RFID (Radio Frequency ID)
28
RFID (Radio Frequency ID)
Chip yourself
Are we crazy???????????
RFID chips are known to cause
deadly cancer in mice, rats,
and dogs.
28
Facial Recognition
Facial Recognition
4 min cc
29
DIGITAL CAMERAS
METHODS OF INPUT TO COMPUTER:
•USB
•Firewire
29
Output Devices
28
Liquid Crystal Display (LCD) Monitor
Samsung 912T
Static Contrast Ratio
• 19 Inch LCD
• 1000-1 contrast ratio (truer colors)
• 250 cd/m2 (picture brightness)
•cd=Standard unit of luminance is candela per square meter (cd/m2).
•candela= one candles luminance on an area of 1 square meter.
•1280 x 1024 pixels (resolution)
•180 degree viewing area
•Scanning frequency
•Horizontal 30-81 kHz
•Vertical 56-75 kHz
•$129 to $299
More Info
31
Light Emitting Diode (LED) Monitor
$299.99
Latest technology is LED
High Dynamic Contrast Ratio
Low power requirement
31
Static vs Dynamic Contrast Ratios
Do you ever wonder why the contrast ratios on newer model LCD TV's can vary so much? It's
not uncommon for contrast ratios to be 2000:1 and 25000:1 on two HDTV's that are otherwise
very similar in their features and overall quality. Why is this?
There are actually two types of contrast ratios and the difference lies in the definitions.
Unfortunately not all salespeople and marketers of HDTV's bother to point out which type of
contrast ratio is being reported. The first type of contrast ratio, the static contrast ratio, is the ratio
of the brightest part of an LCD screen to the darkest part that can be simultaneously displayed on
screen. The second type of contrast ratio, the dynamic contrast ratio, is measured by comparing
the blackest black of one image to the whitest white of another image at a different time.
By measuring the dynamic contrast ratio in such a way that allows for the entire screen to be
darker for dark scenes and lighter for light scenes, this allows LCD makers and marketers to
claim a larger dynamic contrast ratio. So when you see two otherwise comparable LCD's with
contrast ratios of 2000:1 and 25000:1, you now know the larger, more impressive looking number
is a dynamic contrast ratio, while the smaller one is a static contrast ratio.
The most interesting part of this is while dynamic contrast ratios can improve the picture quality
for scenes that are predominantly dark or bright, the actual reported contrast ratio can't actually
be achieved. So don't get confused. Yes, dynamically-altered brightness is a good HDTV feature,
just don't base your buying decision on the massive looking dynamic contrast ratio.
COMPUTER PROJECTOR
COMPUTER PROJECTORS
•3 - 8 Pounds
• $ 850-$3,500
31
Laser Printer
Typical Characteristics:
• 600 to 2,400 dpi (dots per inch)
• 6 to 30 ppm (pages per minute)
• $59 to $399
• FAR CHEAPER TO OPERATE
THAN INKJETS.
32
Wireless Laser Printer
$99.95 to $149.95
Brother Wireless Laser Printer
32
InkJet Printer
• Ink is infused with electrically charged particles.
• Ink is heated, ink bubbles form, cool and
collapse, shooting ink droplets out the nozzle
toward the paper.
• The spray is deflected horizontally and
vertically by electrically charged deflection
32
plates.
InkJet Printer
Canon Pixma iP4200
•600 by 600 dots/inch (black&white)
•9,600 by 2,400 dots/inch (color)
•$59.00-$130
•Color speed: 20 pages/min
•USB 2.0
32
MISCELLANEOUS
ITEMS
30
POWER BACKUP
Power backup system
•Used in case of power failure.
•Pictured item runs for 16 minutes
•$79 to $269.00
37
SAMPLE TEST QUESTIONS
1. What item below is true concerning Intel's Core
2 Duo processor?
a. It has one processor.
b. It has no L1 cache.
c.
It does not allow for sharing cache.
d. It allows for multi-threaded applications.
57
SAMPLE TEST QUESTIONS
2. Computer memory labeled PC8400 has a
transfer speed of 8.4 MB/s?
a. True
b. False
58
SAMPLE TEST QUESTIONS
3. Which type of storage is typically the fastest?
a. Hard drives
b. DDR3
c. Cache
d. DRAM
59
SAMPLE TEST QUESTIONS
4. If you were to purchase 100 new computers for
your company, which interface technology would
you want so that you can expand your computers
now and in the future?
a. PATA
b. SATA
c. XT
d. DMA
e. Parallel
60
SAMPLE TEST QUESTIONS
5. Your small business has hard drives and you
want to create an exact image of what is on those
drives on other hard drives. Which product below
could you use?
a. McAfee Anti-virus
b. Norton System Check
c. Zone Alarm
d. Norton Disk Restore
e. Norton Ghost
61
SAMPLE TEST QUESTIONS
6. Your company wants to purchase 50 external
hard drives. Which interface would you look for
this or next year?
a. USB 2.0
b. USB 3.0
c. USB 4.0
d. USB 5.0
62
SAMPLE TEST QUESTIONS
7. Moore’s law states that chip density will double
every
a. 14 to 16 months.
b. 18 to 24 months.
c.
48 to 58 months
d. 58 to 78 months.
63
SAMPLE TEST QUESTIONS
8. DVDs store more information than CDs because:
a. DVDs have smaller pits.
b. DVD’s tracks are spaced closer together.
c.
DVDs can be recorded on two layers.
d. a and b
e.
a, b, and c
64
SAMPLE TEST QUESTIONS
9. How fast will this DVD recorder rewrite:
4x2x6x?
a. 2x
b. 4x
c.
6x
d. 2.6 Million Bytes/Second
e.
a and d
65
SAMPLE TEST QUESTIONS
10. How fast will this DVD recorder read: 4x2x6x?
a. 1.3 Million Bytes/Second
b. 2.6 Million Bytes/Second
c.
5.2 Million Bytes/Second
d. 7.8 Million Bytes/Second
e.
None of the above
66
SAMPLE TEST QUESTIONS
11. The type of storage drive most likely to replace
the magnetic hard drive will be:
a. Solid State Drives
b. Magnetic TeraByte drives
c.
Optical drive
d. Blue Ray Drives
e.
DVD high definition drives
67
SAMPLE TEST QUESTIONS
12. What is/are characteristic/s of solid state
drives.
a. Faster access than most magnetic hard
drives
b. Are not sensitive to vibrations or sudden
movements
c.
Lower power requirements.
d. a and b
e.
a, b, and c
68
SAMPLE TEST QUESTIONS
13. Intel is currently working on a processor that
has a lot of cores. Exactly, how many?
a. 30
b. 80
c.
160
d. None of the above
69
SAMPLE TEST QUESTIONS
14. Your company wants a computer that is not
likely to be shut down due to a disk crash. Which
technology would be best to accomplish this goal?
a. RAID level-1
b. RAID level-0
c.
SATA (150 MB/S transfer rate)
d. E-IDE
e.
USB 2.0
70
SAMPLE TEST QUESTIONS
15. Which level of RAID allows for both disk
mirroring and very fast access?
a. Level 0
b. Level 1
c.
Level 0+1
71
SAMPLE TEST QUESTIONS
16. You need to replace your old CRT monitors.
You plan to purchase LCD monitors. What are
some of the things you should you look for?
a. High contrast ratios.
b. Low cd/m2 values.
c.
a and b
72
SAMPLE TEST QUESTIONS
17. Copper traces on a motherboard that allow
pulses to travel from one component to another
is/are called a:
a. route.
b. bus.
c.
wire.
d. cable.
e.
c and d
73
SAMPLE TEST QUESTIONS
18. What is true concerning Level-2 cache?
a. It is faster than RAM
b. It is located within the processor's
silicon.
c.
It is typically located next to the
processor's silicon.
d.
a and b
e.
a and c
74
SAMPLE TEST QUESTIONS
19. Iris scanners can detect differences in identical
twin’s Irises?
a. True
b. False
75
SAMPLE TEST QUESTIONS
20. Which type of disc technology can hold the most
data?
a. Blu-ray
b. DVD
c.
CD Rom
76
SAMPLE TEST QUESTIONS
21. DRAM has very small capacitors that must be
constantly recharged in order to continuously store
a "1"?
a. True
b. False
77
SAMPLE TEST QUESTIONS
22. If you need to replace a computer monitor, the
latest technology with extremely good contrast
ratio and low power requirements applies to which
type of monitor?
a. LCD (Liquid Crystal Display)
b. LED (Light Emitting Diode)
c.
CRT (Cathode Ray Tube)
d. a or c
78
SAMPLE TEST QUESTIONS
23. Which technology is least likely to be around in
ten years?
a. SATA
b. Firewire
c.
USB
d. PCIe
79
SAMPLE TEST QUESTIONS
24. When looking for a new laptop which processor
family would be most current?
a. i3, i5, i7
b. Intel core 2 duo family
c.
Intel single core family
d. b and c
80
SAMPLE TEST QUESTIONS
25. The i3 has two cores which are threaded. What
is the advantage of threading?
a. It allows each core to execute two
instructions at the same time.
b. It allows each core to execute six
instructions at the same time.
c.
It allows each core to execute three
instruction at one time.
81
SAMPLE TEST QUESTIONS
26. The i3 has two cores and no turbo boost.
a. True
b. False
82
SAMPLE TEST QUESTIONS
27. The i5 has turbo boost and two cores.
a. True
b. False
83
SAMPLE TEST QUESTIONS
28. In general, the i7 has turbo boost and two or
four cores.
a. True
b. False
84
SAMPLE TEST QUESTIONS
29. Which processors below have cores that are
threaded?
a. i3
b. i5
c.
i7
d. b and c
e.
a, b, and c
85
SAMPLE TEST QUESTIONS
30. Many current hard drives have terabytes of
storage. How many bytes of storage is a terabyte?
a. 1,000,000 bytes of storage
b. 1,000 billion bits of storage
c.
100 million bytes of storage
d. 1000 million bytes of storage
86
SAMPLE TEST QUESTIONS
31. How many bytes are in a megabyte?
a. 1,000,000
b. 1,000
c.
1,000,000,000
d. 1,000,000,000,000
87
SAMPLE TEST QUESTIONS
32. How many bits are in one byte?
a. 4
b. 8
c.
16
d. 32
88
SAMPLE TEST QUESTIONS
33. Which hard drive will be faster?
a. Access time 6 ms, buffer size 64 MB,
RPM 10,000
b. Access time 12 ms, buffer size 32 MB,
RPM 7,200
c.
Access time 8 ms, buffer size 16 MB,
RPM 5,400
89
SAMPLE TEST QUESTIONS
35. For what does SATA stand?
a. Serial Advanced Technology Attachment
b. Serial Adaptive Transfer Attachment
c. Serial Access Technology Attachment
d. None of the above
90
SAMPLE TEST QUESTIONS
36. Typically, a SSD (Solid State Drive) can read
data sequentially up to _______ and write data
sequentially up to _______.
a. 60 MB/s, 30 MB/s
b. 540 MB/s, 410 MB/s
c.
1,024 MB/s, 135 MB/s
d. 2,048 MB/s, 260 MB/s
91
SAMPLE TEST QUESTIONS
37. The latest storage drives are call hybrid.
These drives combine what two technologies?
a. SSD and magnetic hard drives
b. DVD and Blu-ray
c.
Blu-ray and SSD
d. DVD and SSD
e.
None of the above
92
SAMPLE TEST QUESTIONS
38. The Hybrid drive boots about how much faster
than the typical 7,200 RPM hard drive?
a. ~100 percent
b. ~90 percent
c.
~60 percent
d. ~40 percent
e.
~10 percent
93
SAMPLE TEST QUESTIONS
39. In most laptop computers there is no room
for a second hard drive. Most users want some
convenient way to back up their files without
having to connect an external device such as
a flash drive each time they use their computer.
A good solution would be to: Place a 32GB or 64GB
Secure Digital (SD) memory card into the Secure
Digital slot on the laptop.
a. True
b. False
94
SAMPLE TEST QUESTIONS
40. A single layer and double layer Blu-ray disk
can hold a maximum of how may bytes?
a. 25 GB, 50 GB
b. 10 GB, 20 GB
c. 100 GB, 200 GB
d. 1,000 GB, 2, 000 GB
95
SAMPLE TEST QUESTIONS
41. An Apple iTouch can be used with an
adapter for processing a sales transaction?
a. True
b. False
96
SAMPLE TEST QUESTIONS
42. According to Dr. Scanlan it will be possible
to control electronic devices simply by thinking
about what you want the device to do.
a. True
b. False
97
SAMPLE TEST QUESTIONS
43. For this class, test froms are scanned by
an Apperson Print Management scanner, and
the score is automatically entered into a
grading package?
a. True
b. False
98
SAMPLE TEST QUESTIONS
45. What is true concerning the finger print time
clock presented in your notes?
a. It is a very, very slow device.
b. It uses the employee ID as an address for
where the finger print is stored on a
hard disk.
c.
The employee first enters their employee ID
then places their finger on the reader.
d. b and c
e.
a, b, and c
99
SAMPLE TEST QUESTIONS
46. There has been a merger of human brain cells
and computer chips so that the cells interact
with the electronics of these chips.
a. True
b. False
100
SAMPLE TEST QUESTIONS
47. If you are in charge of purchasing a large
number of laptops for your company, a company
where most employees travel by airlines, you
would most likely purchase:
a. computers with hybrid disks.
b. computers with magnetic hard drives
c.
computers with solid state drives.
d. computers with a lot of memory.
101
SAMPLE TEST QUESTIONS
48. If you are in charge of purchasing a large
number of laptops for your company, a company
where most employees travel by airlines, you
would most likely purchase:
a. computers with hybrid disks.
b. computers with magnetic hard drives
c.
computers with solid state drives.
d. computers with a lot of memory.
102
SAMPLE TEST QUESTIONS
49. How many hard drives would be necessary
for RAID 0+1?
a. Two
b. Three
c. Four
d. Five
e. Six
103
SAMPLE TEST QUESTIONS
50. In blu-ray, the “x” multiplier stands for how
many bytes per second transfer rate? (12x4x8x).
This rate is for Write, Rewrite, and Read.
a. 4.5 MB/s
b. 9.0 MB/s
c. 18 MB/s
d. 36 MB/s
104
SAMPLE TEST QUESTIONS
105