12-52. Which of the following viruses is generally
the most destructive to a system?
1. Worm
2. Trojan horse
3. Logic bomb
12-53. Which of the following is NOT a precaution
in preventing virus infections?
1. Making regular back-ups
2. Using only authorized software
3. Periodically checking the size of the
COMMAND.COM file
4. Using software from an unauthorized
source
12-54. It is usually possible to recover some data
from a fixed disk even after a severe head
crash.
1. True
2. False
12-55. In caring for a fixed disk, which of the
following precautions is NOT
recommended?
1. Limit the number of times the system is
turned on and off
2. Avoid eating, drinking, and smoking
around computer systems
3. Clean the fixed disk on a regular basis
4. Perform the low-level format of a fixed
disk in the position and temperature that
the disk will be used
12-56. A multimedia CD-ROM is a disc that
contains which of the following types of
information?
1. Data files only
2. Digitized audio only
3. Digitized video only
4. Data files, digitized audio, and digitized
video
12-57. Data is stored on a CD-ROM by which of the
following methods?
1. Magnetizing spots on the disc
2. Etching tiny ones and zeros on the disc
3. Punching tiny holes through the disc
4. Etching pits between lands on the disc
12-58. The diameter of a compact disc is
1. 120 mm
2. 130 mm
3. 140 mm
4. 150 mm
12-59. The data area of a CD-ROM consists of
which of the following sections?
1. The table of contents, the lead-out area,
and the clamping area
2. The table of contents and the program area
only
3. The table of contents, the program area,
and the lead-out area
4. The lead-out area and the clamping area
12-60. CD-ROM storage has all of the following
advantages except which one?
1. Fast access time
2. Storage capacity of over 540 megabytes of
information
3. Extremely durable
4. Can store a mixture of digital information
12-61. Data is stored on a CD-ROM disc in which of
the following ways?
1. In a series of separate tracks only
2. In a series of separate tracks divided into
sectors
3. In a continuous spiral track divided into
sectors
4. In a continuous spiral sector divided into
tracks
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