Certification Exam 100

 (a) USB  (b) parallel  (c) PCI  (d) serial

Correct answer is

(d)

Your score on this question is:

1.00

Feedback:

See section 2.2.1, subsection "Ports," in the course notes.

22.

Graphics cards, sound cards, and Ethernet cards are typically connected to a PC via

 (a) expansion slots  (b) FireWire  (c) USB  (d) parallel ports

Correct answer is

(a)

Your score on this question is:

1.00

Feedback:

See section 2.2.1, subsection "Expansion Slots and Cards," in the course notes.

23.

Serial ports transfer data _____ bit(s) at a time, whereas parallel ports transfer data _____ bit(s) at a time.

 (a) 1, 8  (b) 8, 1  (c) 16, 8  (d) 8, 16

Correct answer is

(a)

Your score on this question is:

1.00

Feedback:

See section 2.2.1, subsection "Ports," in the course notes.

24.

The width of a computer bus is typically measured in

 (a) hertz  (b) pixels  (c) bytes per second  (d) bits

Correct answer is

(d)

Your score on this question is:

1.00

Feedback:

See section 2.2.2 in the course notes.

25.

Cathode-ray-tube computer monitors use _____ color mixing, whereas color printers typically use _____ color mixing.

 (a) BIV, ROY  (b) RGB, CMYK  (c) ROY, BIV  (d) CMYK, RGB

Correct answer is

(b)

Your score on this question is:

1.00

Feedback:

See section 2.2.3 in the course notes.

26.

Data is typically transferred between the disk controller and storage devices by the _____ bus.

 (a) memory  (b) IDE  (c) AGP  (d) front side

Correct answer is

(b)

Your score on this question is:

1.00

Feedback:

See section 2.2.2 in the course notes.

27.

Which of the following is (are) true regarding data transfer rates of storage devices?

1. Sequential-access devices have faster transfer rates than random-access devices.

2. A device with 50 ms access time is faster than a device with 10 ms access time.

 (a) II only  (b) I only  (c) I and II  (d) None

Correct answer is

(d)

Your score on this question is:

1.00

Feedback:

See Chapter 2, page 79, in the course textbook.

28.

Which of the following is (are) true regarding removable optical and magnetic media?

1. Optical media are generally more durable than magnetic media.

2. Optical media generally have a lower cost per megabyte of storage when compared to magnetic media.

 (a) I and II  (b) I only  (c) None  (d) II only

Correct answer is

(a)

Your score on this question is:

0.00

Feedback:

See section 2.3.2, subsection "Optical versus Magnetic," in the course notes.

29.

Which of the following is (are) true regarding hard disks?

1. Data on hard disks is stored as volatile electric charges.

2. Personal computers typically have more RAM than hard drive capacity.

3. Accessing data on a hard disk is faster than accessing data in RAM.

 (a) II and III only  (b) I only  (c) None  (d) I and III only

Correct answer is

(c)

Your score on this question is:

1.00

Feedback:

   See section 2.3 in the course notes.    

30.

If two devices are attached to the same IDE port, they must be designated as

 (a) IDE and EIDE  (b) master and slave  (c) primary and secondary  (d) IDE and ATA

Correct answer is

(b)

Your score on this question is:

1.00

Feedback:

See section 2.3.1, subsection "EIDE Master/Slave," in the course notes.

31.

Which of the following is (are) true regarding DVDs?

1. They can have tracks on both sides of the disk.

2. They can have two layers of tracks on one side of the disk.

 (a) I only  (b) None  (c) I and II  (d) II only

Correct answer is

(c)

Your score on this question is:

1.00

Feedback:

See section 2.3.2, subsection "Optical Media: CDs versus DVDs," in the course notes.

32.

Examples of optical storage include which of the following?

1. CD-ROM disks

2. CD-RW disks

3. DVD-ROM disks

 (a) I and III only  (b) I and II only  (c) II and III only  (d) I, II, and III

Correct answer is

(d)

Your score on this question is:

1.00

Feedback:

See Chapter 2, page 78, in the course textbook.

33.

Which of the following is the term for a step in a process that takes a much longer time to complete than do other steps in the process, thus reducing overall performance?

 (a) A benchmark  (b) A bottleneck  (c) Backup  (d) Latency

Correct answer is

(b)

Your score on this question is:

1.00

Feedback:

See Section 2.5.2, subsection "Bottlenecks-Slowing a Process," in the course notes.

34.

Use of which of the following can help identify the bottlenecks in a computer system?

 (a) Bus speed  (b) Bandwidth  (c) A cache  (d) Benchmarks

Correct answer is

(d)

Your score on this question is:

1.00

Feedback:

See Section 2.5.2, subsection "Speeding Up Bottlenecks," in the course notes.

35.

Which Windows operating system utility can be used to see what processes are currently running?

 (a) Disk Defragmenter  (b) Task Manager  (c) Device Manager  (d) Add/Remove Programs

Correct answer is

(b)

Your score on this question is:

1.00

Feedback:

See Section 3.1.4, subsection "Lab: The Task Manager," in the course notes.

36.

How many processes can be in a running state on a single CPU at any instant in time?

 (a) Four  (b) Eight  (c) One  (d) Two

Correct answer is

(c)

Your score on this question is:

1.00

Feedback:

See Section 3.1.3, subsection "Process Control," in the course notes.

37.

Each layer of software only needs a limited amount of information to perform its task, and none of the other layers has access to that information. This concept is known as

 (a) Abstraction  (b) Polymorphism  (c) Application  (d) Encapsulation

Correct answer is

(d)

Your score on this question is:

1.00

Feedback:

See Section 3.1.1, subsection "Encapsulation and Abstraction," in the course notes.

38.

The heart of the operating system that performs the functions that are most crucial for keeping everything running is the

 (a) user interface  (b) kernel  (c) BIOS  (d) API

Correct answer is

(b)

Your score on this question is:

1.00

Feedback:

See Section 3.1.1, subsection "Layers of Software," in the course notes.

39.

Which of the following occurs when the computer's hardware is requested to do something that it cannot do, such as access a nonexistent memory location?

 (a) A trap  (b) A nested interrupt  (c) A fault  (d) An IRQ

Correct answer is

(c)

Your score on this question is:

1.00

Feedback:

See section 3.2.1, subsection "Traps and Faults," in the course notes.

40.

A Windows utility called _____ can be used to view information on the drivers and resources that pieces of hardware are using.

 (a) Device Manager  (b) Task Manager  (c) Driver Manager  (d) Disk Defragmenter

Correct answer is

(a)

Your score on this question is:

1.00

Feedback:

See section 3.2.4, subsection "Lab: Device Management," in the course notes.

41.

Which of the following is an event similar to an interrupt, except that instead of being triggered by an external signal, it is generated by the execution of processor instructions?

 (a) An IRQ  (b) A fault  (c) A nested interrupt  (d) A trap