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1.
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Passive optical LANs use standard FTTH architecture
and protocols which are similar to typical LANs.
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2.
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Passive optical LANs use optical splitters to divide the optical signal to allow
up to ____ devices (ONTs) to be connected to one port on the optical line terminal (OLT) that is the
center of the LAN.
A. | 1 | B. | 4 | C. | 32 | D. | Unlimited
number |
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3.
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Downstream the splitter splits the signal from the OLT to serve multiple ONTs
while upstream it acts as a combiner to merge all the signals onto the same fiber connecting to the
OLT, thus carrying bi-directional signals on one fiber.
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4.
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Passive OLANs use two wavelengths for bi-directional signals: _________ nm
downstream from the OLT to the ONT and __________nm upstream from the ONT to the OLT.
A. | 850, 1300 | B. | 1310, 1550 | C. | 1490,
1310 | D. | 1310, 850 |
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5.
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The PON splitter serves the same purpose as a ______ but requires no
power/ground/AC and takes a fraction of the space.
A. | Patch panel | B. | Attenuator | C. | WDM | D. | Ethernet switch |
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6.
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ONTs in LANs are usually ________ but other options are available.
A. | 4-port Gigabit Ethernet switches | B. | Triple play ONTs
(voice/Ethernet/TV) | C. | Multiple port phones | D. | All of
these |
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7.
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As we mentioned above, OLANs are using only singlemode cables which are easy to
install but require special termination procedures (generally prepolished/splice connections) or
using prefab cable assemblies.
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