The difference between remote controls that use infrared light and those that use radio waves is that ________
A) radio waves cannot pass through any objects in their path
B) infrared lights are visible to the human eye
C) infrared light requires the user to point the remote control directly at the appliance
D) radio waves act like a beam of light
C
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Answer the following questions for the certification report shown here.
a. What is the length of wire pair 7–8?
b. What is the delay skew for pair 4–5?
c. Why did this cable fail the wiremap test?
________ is performed most often to improve the existing software.
A) Maintenance B) Testing C) Documentation D) Cloud computing
Restructuring the database includes adding new fields to a table, changing the characteristics of existing fields, and removing existing fields.
Answer the following statement true (T) or false (F)
A company uses PGP to ensure that sensitive email is protected. Which of the following types of cryptography is being used here for the key exchange?
A. Symmetric B. Session-based C. Hashing D. Asymmetric