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PROGRESSION CONSTRUCTION
COORDINATOR I – II NEWEST 2024 ACTUAL
EXAM COMPLETE 110 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
Which of the following is true about the SONET standard? - ANSWER- SONET is the North American standard used for telephony applications.
Compared to a solid copper center conductor, which property about a copper clad aluminum (CCA) center conductor is correct? - ANSWER- The CCA center conductor has almost equal attenuation at high frequencies.
In hardline coaxial cable, what is the most common dielectric material? - ANSWER- Foamed polyethylene produced by gas injection.
In aerial installations, why do cable manufacturers recommend that expansion loops be formed in hardline coaxial cable? - ANSWER- To allow movement of the cable when lashed to the strand 1 / 3
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Why was the impedance for the broadband cable industry standardized at 75 ohms (Ω)? - ANSWER- At 75 Ω characteristic impedance, the coaxial cable has minimal attenuation, with adequate breakdown voltage and power carrying capacity.
What is the coaxial cable velocity of propagation (VoP)? - ANSWER- The rate that radio frequency (RF) signals travel through the coaxial cable versus the speed that RF signals travel in a vacuum or free space.
If the attenuation through a 100 ft. span of 0.750 MC2 coaxial cable is 2.5dB at 75 MHz, what will be the approximate attenuation at 300 MHz? - ANSWER- 2 x 2.5 dB, or 5.0 dB.
What is the attenuation through 1,600-feet of 0.750 cable at 600 MHz and 120° F, when at 68° F and 600 MHz the cable attenuation rate is 1.31 decibels (dB)/100 feet? (Be sure to factor in the higher temperature.) - ANSWER- 22.05 dB.
What happens when there is an impedance mismatch between the coaxial cable and the load? - ANSWER- Some signal energy is transferred to the load, with the remainder reflected along the coaxial cable back to the source. 2 / 3
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What is the return loss in coaxial cable? - ANSWER- The difference in decibels (dB) between the signal power applied to a terminated cable and the reflected signal power.
How can signal leaks (egress) from hardline coaxial cable occur? - ANSWER- Through cracks in the shield where the cable is bent, or tiny holes in the shield.
Why are pin-type hardline connectors the preferred type of connector for attaching hardline coaxial cable to equipment housings in today's networks? - ANSWER- Over the years, intermittent operation, low-frequency roll-off, and common path distortion (CPD) issues have been attributed to feed-through connectors.
What type of adapter is used for permanent or temporary jumper installation in place of damaged hardline coaxial cable or equipment hookup? - ANSWER- Pin-to-F female adapters.
What should be worn when cutting and preparing hardline coaxial cable for connector attachment? - ANSWER- Leather work gloves.
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