Computer Networks Questions & Answers – Physical Media

This set of Computer Networks Multiple Choice Questions & Answers (MCQs) focuses on “Physical Media”.

1. Which of this is not a guided media ?
a) Fiber optical cable
b) Coaxial cable
c) Wireless LAN
d) Copper wire
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2. UTP is commonly used in
a) DSL
b) FTTP
c) HTTP
d) None of the mentioned
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3. Coaxial cable consists of _______ concentric copper conductors.
a) 1
b) 2
c) 3
d) 4
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4. Fiber optics posses following properties
a) Immune electromagnetic interference
b) Very less signal attenuation
c) Very hard to tap
d) All of the mentioned
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5. If an Optical Carrier is represented as OC-n, generally the link speed equals(in Mbps),
a) n*39.8
b) n*51.8
c) 2n*51.8
d) None of the mentioned
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6. Terrestrial radio channels are broadly classifed into _____ groups.
a) 2
b) 3
c) 4
d) 1
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7. Radio channels are attractive medium because
a) Can penetrate walls
b) Connectivity can be given to mobile user
c) Can carry signals for long distance
d) All of the mentioned
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8. Geostationary satellites
a) Are placed at a fixed point above the earth
b) Rotate the earth about a fixed axis
c) Rotate the earth about a varying axis
d) All of the mentioned
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