Exam (elaborations)
BICSI ITSIMM 8th Edition Test Bank
- Course
- Institution
BICSI ITSIMM 8th Edition Test Bank BICSI ITSIMM 8th Edition Test Bank BICSI ITSIMM 8th Edition Test Bank
[Show more]
Content preview
BICSI ITSIMM 8th Edition Test BankGraded index optical fiber eliminates the effects of modal dispersion. - ANS False
Macrobends in optical fiber strands are ________ to the installer. - ANS Visible
In optical fibers, dispersion factors ______ the BER and ______ the effective bandwidth. - ANS
DSL technology uses available bandwidth above the POTS range on existing PSTN copper loops. - ANS
True
Capacitance causes a voltage difference between two wires when seperated by insulation. - ANS True
Total dispersion is the _______ modal dispersion and chromatic dispersion. - ANS Sum of
The relationship of core and cladding that make up an optical fiber is called: - ANS
Crosstalk values are typically expressed as a negative decibel value. - ANS True
A ______ equals a frequency of one million cycles in one second. - ANS Megahertz
It may be possible to eliminate the need for metallic conduit in some environments by using
screened/shielded cabling. - ANS True
The pair lay of a balanced twisted-pair cable varies from approximately 6mm (0.24in) to approximately: -
ANS 150mm (6in)
,For OS1a indoor-outdoor, singlemode optical fiber cable, attenuation at 1383 nm can be as high as
______ dB/km. - ANS 1.5 dB/km
The _____ type of optical fiber cable consists of multiple 1.6mm (.06in) through 3mm (.12in) subunits of
individually jacketed strands under a single overall jacket. - ANS Breakout
The overfilled launch (OFL) bandwidth of an OM5 multimode fiber is _____ MHz-km at 850nm. - ANS
3500 MHz-km
A decrease of _____ dB results in halving of the voltage. - ANS 6 dB
Attenuation is also referred to as _____ loss. - ANS Insertion
A battery is an example of an AC source. - ANS False
A 'bel' is a measure of _____ signal strength. - ANS Analog
A codec is used to convert the amplitude changes of various frequencies into a digital format for
transmission over digital transmission media. - ANS True
The _____ cable marking for fire rating designates a 'communications limited use' type of copper cable. -
ANS CMX
Balanced twisted-pair cabling channel performance associates a frequency of _____ MHz with a TIA
Category 5e. - ANS 100 MHz
An EMI source is always external to the cable containing the affected circuit. - ANS False
, Optical fiber bandwidth is limited by total dispersion, which is the sum of modal dispersion and
chromatic dispersion. - ANS True
A stranded wire will always have a _____ overall diameter than a solid wire with the same AWG. - ANS
Larger
_____ is the widening or spreading out of the modes in a light pulse as it progresses along the optical
fiber. - ANS Dispersion
Analog transmissions uses continuously varying electrical signals. - ANS True
Return loss values are typically a _____ decibel value. - ANS Negative
Fit, alignment, functionality, and configuration are all considered to be key factors in establishing a good
connection and minimizing loss of signal. - ANS True
An increase of 10dB for power will cause an increase of _____ times the original dB value. - ANS 10
A digital signal is a _____ signal that changes from one state to another in a number of distinct steps
within fixed time slots. - ANS Discontinuous
For all versions of multimode optical fiber cable (OM1 - OM5) attenuation at 1300nm can be as high as
______ dB/km. - ANS 1.5 dB/km
The decibel is a _____ function. - ANS Logarithmic
Ohm's Law can be stated as: - ANS V = I x R
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lectjoseph. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now