Podcast
Questions and Answers
What is the main difference between step index and graded index fibers?
What is the main difference between step index and graded index fibers?
- Graded index fibers have a narrower diameter than step index fibers
- Density of the core remains constant in step index but decreases gradually in graded index (correct)
- Step index fibers have higher density than graded index fibers
- Step index fibers are single mode while graded index fibers are multimode
What is a characteristic of radio waves according to the text?
What is a characteristic of radio waves according to the text?
- Travel through a physical conductor for communication
- Transmitted in all directions from the antenna (correct)
- Radiate upward into the ionosphere for reflection
- Required to be transmitted in straight lines directly between antennas
Which type of fiber has a critical angle close to 90 degrees, resulting in almost horizontal beam propagation?
Which type of fiber has a critical angle close to 90 degrees, resulting in almost horizontal beam propagation?
- Single mode fiber (correct)
- Graded index fiber
- Multimode fiber
- Step index fiber
Which propagation method allows for greater distances with lower output power?
Which propagation method allows for greater distances with lower output power?
What defines optical fibers based on their core to cladding diameter ratio?
What defines optical fibers based on their core to cladding diameter ratio?
What type of communication is often referred to as wireless communication?
What type of communication is often referred to as wireless communication?
What type of connector is used for cable TV networks?
What type of connector is used for cable TV networks?
What is a disadvantage of radio waves according to the text?
What is a disadvantage of radio waves according to the text?
Which application benefits from the higher bandwidth and immunity to electromagnetic interference of optical fiber?
Which application benefits from the higher bandwidth and immunity to electromagnetic interference of optical fiber?
Which frequency range characterizes radio waves?
Which frequency range characterizes radio waves?
What is a key advantage of optical fiber over traditional copper wires in communication networks?
What is a key advantage of optical fiber over traditional copper wires in communication networks?
In which propagation method must antennas be directional and face each other directly?
In which propagation method must antennas be directional and face each other directly?
What is the purpose of a BNC connector in networking?
What is the purpose of a BNC connector in networking?
In the context of coaxial cables, what is the significance of the RG rating?
In the context of coaxial cables, what is the significance of the RG rating?
How does a solid central core conductor differ from a stranded central core conductor in coaxial cables?
How does a solid central core conductor differ from a stranded central core conductor in coaxial cables?
What is a key advantage of optical fiber over coaxial cables in data transmission?
What is a key advantage of optical fiber over coaxial cables in data transmission?
In which applications are coaxial cables commonly used?
In which applications are coaxial cables commonly used?
What type of lines connect subscribers to the central telephone office?
What type of lines connect subscribers to the central telephone office?
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