Columbia University in the City of New York



Component 4/Unit 3

Self-Assessment Key

1. The main function of a computer is to ____.

a. execute instructions

b.answer human questions

c.service the CPU

d.create input signals

Answer: a

Objective(s): A

Lecture(s)/Slide(s): 3-1, slide 3

2. The motherboard is made up of circuitry and thousands of copper wires known as ____.

a.binary code

b.RAM

c.buses

d.chips

Answer: c

Objective(s): A

Lecture(s)/Slide(s): 3-1, slide 6

3. The motherboard contains ____ slots, into which device expansion cards are inserted.

a.RAM

b.SATA

c.AGP

d.PCI

Answer: d

Objective(s): A

Lecture(s)/Slide(s): 3-1, slide 9

4. Today’s computers connect the mouse and keyboard via a(n) ____ slot.

a.USB

b.IDE

c.SATA

d.PS/2

Answer: a

Objective(s): A

Lecture(s)/Slide(s): 3-2, slides 3 and 5

5. The ____ monitor port replaces the VGA port in today’s computer systems.

a.HDMI

b.DVI

c.AGP

d.PS/2

Answer: b

Objective(s): A

Lecture(s)/Slide(s): 3-2, slide 4

6. A(n) ____ jack is used to connect a network cable to a network interface card.

a.RJ-11

b.802.11N

c.RJ-45

d.Either A or C

Answer: c

Objective(s): A

Lecture(s)/Slide(s): 3-2, slide 8

7. A serial port, also known as a ____ port, can be used to connect to and manage a network device.

a.DB-25

b.parallel

c.USB to serial

d.DB-9

Answer: d

Objective(s): A

Lecture(s)/Slide(s): 3-2, slide 10

8. Hard disk storage is known as ____ storage.

a.secondary

b.volatile

c.RAM

d.primary

Answer: a

Objective(s): B

Lecture(s)/Slide(s): 3-2, slide 13

9. RAM is installed ____.

a.on the motherboard

b.in PCI slots

c.within the CPU

d.in SATA slots

Answer: a

Objective(s): A

Lecture(s)/Slide(s): 3-2, slide 12

10. The operating system is stored ____.

a.in RAM when the computer is running

b.on the hard disk

c.Either A or B

d.None of the above

Answer: c

Objective(s): B

Lecture(s)/Slide(s): 3-2, slides 12 and 13

11. What is a CT scan?

a.A nuclear medicine imaging device that produces a 3-D image.

b.A device that creates an image based on sound waves.

c.An x-ray, using specialized equipment, that takes cross-sectional pictures of the body.

d.Magnetic imaging equipment that uses a radio frequency pulse to create an image.

Answer: c

Objective(s): E

Lecture(s)/Slide(s): 3-1, slide 17

12. What is a PET scan?

a.A nuclear medicine imaging device that produces a 3-D image.

b.A device that creates an image based on sound waves.

c.An x-ray, using specialized equipment, that takes cross-sectional pictures of the body.

d.Magnetic imaging equipment that uses a radio frequency pulse to create an image.

Answer: a

Objective(s): E

Lecture(s)/Slide(s): 3-1, slide 18

13. What is an MRI?

a.A nuclear medicine imaging device that produces a 3-D image.

b.A device that creates an image based on sound waves.

c.An x-ray, using specialized equipment, that takes cross-sectional pictures of the body.

d.Magnetic imaging equipment that uses a radio frequency pulse to create an image.

Answer: d

Objective(s): E

Lecture(s)/Slide(s): 3-1, slide 20

14. A binary digit value of one (1) indicates that electricity is ____.

a.stored in RAM

b.on

c.off

d.in a Boolean circuit

Answer: b

Objective(s): C

Lecture(s)/Slide(s): 3-2, slide 18

15. In the binary number “01011010”, the rightmost value of “0” is a placeholder for ____.

a.20

b.21

c.22

d.27

Answer: a

Objective(s): C

Lecture(s)/Slide(s): 3-2, slides 20 and 21

16. 1024 bytes x 1024 x 1024 = ____.

a.1 KB

b.1 GB

c.1 TB

d.1,024 KB

Answer: b

Objective(s): C

Lecture(s)/Slide(s): 3-2, slide 22

17. Microsoft Word, running on a computer, is an example of a(n) ____.

a.process

b.service

c.thread

d.event

Answer: a

Objective(s): F

Lecture(s)/Slide(s): 3-3, slide 15

18. How does data differ from information?

a.Data has limited meaning, depending its storage location.

rmation is the same as data.

c.Data has no meaning on its own merit.

d.None of the above.

Answer: c

Objective(s): E

Lecture(s)/Slide(s): 3-3, slide 18

19. Roughly how much storage does a chest x-ray require?

a.35 megabits

b.20 megabits

c.30 megabytes

d.20 megabytes

Answer: d

Objective(s): F

Lecture(s)/Slide(s): 3-2, slide 23

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