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Self Test Appendix • Appendix 791

10. You are working with a team to set up a network in a manufacturing facility.While drawing up
the specifications for their server room network, you must decide on the type of cable to use
for the fastest speed and the most EMI protection.What cable type do you recommend?
A. Fiber optic
B. UTP
C. STP
D. Thick Coax
A. Fiber optic is the best choice for high speed and EMI protection.
B, C, D. Answer B is incorrect because UTP is highly vulnerable to EMI.Answer C is incor-
rect because STP is protected from EMI, but cannot handle speeds as high as fiber can support.
Answer D is incorrect because thick coax is vulnerable to EMI and supports only low speeds.

11. You have been asked to help write a security policy regarding the subject of protecting confi-
dential data.As part of this policy, you must define the best method to destroy the data on
CDRs and DVDs.Which method would you recommend?
A. Overwrite the CDR or DVD multiple times with random data to clear it.
B. Run the CDR or DVD through a demagnetizer to clear it.
C. Shred the CDR or DVD.
D. All of the above.
C. Shredding CDRs and DVDs is the best way to destroy the data on them so that confiden-
tiality is not breached.
A, B, D. Answer A is incorrect because some CDRs and DVDs can only be written to one
time.Answer B is incorrect because CDRs and DVDs are optical, not magnetic.Answer D is
incorrect because answers A and B are not valid choices.

12. The company you work for has many workers who take their work home with them.They
will revise the work at home, and then bring it back to the office.To do this, they transport the
work on floppy disk.To help prevent a user from inadvertently bringing in a virus from their
home system, what should you do?
A. Enact a policy to prevent this practice.
B. Setup automatic mandatory virus scans on all workstations to scan incoming disks.
C. Do nothing; the risk of infection from floppy disk is low.
D. Require that the users use CDRs instead of floppy disks to transport their data.
B. Setting up mandatory virus scans is the best option available for lowering the risk of infec-
tion from this source.
Incorrect Answers & Explanations: A, C, D.Answer A is incorrect because this would greatly
interfere with the company’s business practices.Answer C is incorrect because the risk of virus
infection from floppy disks is very high.Answer D is incorrect because the risk of infection
from CDR is almost as high as that from floppy disks.

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