Question: What is one disadvantage of fiber-optic cables when compared with twisted-pair cables?
Answer Choices:
A. They have higher rates of attenuation.
B. They are more restricted to the ground.
C. They cannot be used in safety-critical environments.
D. They offer lower measures of network bandwidth.
Answer: A. They have higher rates of attenuation.
Question: What is one disadvantage of twisted-pair cables compared to fiber-optic cables?
Answer Choices:
A. They are less readily available in the market.
B. Data transmission rates are lower.
C. They are more difficult to handle and install.
D. Installation is more expensive.
Answer: B. Data transmission rates are lower.
Question: How do the waves of infrared transmissions compare to the waves of visible light?
Answer Choices:
A. Infrared transmissions have longer wavelengths and higher frequencies.
B. Infrared transmissions have shorter wavelengths and lower frequencies.
C. Infrared transmissions have shorter wavelengths and higher frequencies.
D. Infrared transmissions have longer wavelengths and lower frequencies.
Answer: D. Infrared transmissions have longer wavelengths and lower frequencies.
Question: What is a characteristic of fiber-optic cables?
Answer Choices:
A. They make use of light in signal transmission.
B. They contain four nodes in most cases.
C. They have a bandwidth of 10 Mbps to 50 Mbps.
D. They have large diameters and tend to be heavy.
Answer: A. They make use of light in signal transmission.
Question: Which type of signals are transmitted through wireless media?
Answer Choices:
A. Electrical signals
B. Thermomagnetic signals
C. Optical signals
D. Electromagnetic signals
Answer: D. Electromagnetic signals
Question: Which is a use for cellular digital packet data?
Answer Choices:
A. To send and receive SMS messages
B. To collect and transfer geospatial information
C. To enable mobile internet access
D. To connect devices in close proximity
Answer: C. To enable mobile internet access
Question: Which two frequency bands are typically used by Wi-Fi routers?
Answer Choices:
A. 2.4 MHz and 5 MHz
B. 1.5 MHz and 3 MHz
C. 2.4 GHz and 5 GHz
D. 1.5 GHz and 3 GHz
Answer: C. 2.4 GHz and 5 GHz
Question: Which range describes the frequencies used in cellular transmission?
Answer Choices:
A. 1.2 GHz to 5.4 GHz
B. 100 MHz to 850 MHz
C. 18 MHz to 2.8 GHz
D. 600 MHz to 39 GHz
Answer: D. 600 MHz to 39 GHz
Question: Which type of noise is attributed to disturbances from electric motors or changing gears?
Answer Choices:
A. Static noise
B. Cosmic noise
C. Industrial noise
D. Dynamic noise
Answer: C. Industrial noise