Week 10 Chapter 5 Part 2 - Pages 5-44 to 5-92 Flashcards
The maximum standards-recommended length of an Ethernet passive optical network (EPON) is:
a. 10 km (6.2 mi)
b. 20.1 km (12.5 mi)
c. 40 km (25 mi)
d. 60 km (37 mi)
a. 10 km (6.2 mi)
p 5-60 Table 5.5
Maximum channel attenuation = 20 dB
The maximum standards-recommended length of a 10G-EPON is:
a. 10 km (6.2 mi)
b. 20 km (12.5 mi)
c. 40 km (25 mi)
d. 60 km (37 mi)
b. 20 km (12.5 mi)
p 5-60 Table 5.5
Maximum channel attenuation = 29 dB
The maximum standards-recommended length of a GPON (B+ Optics) is:
a. 10 km (6.2 mi)
b. 20 km (12.5 mi)
c. 40 km (25 mi)
d. 60 km (37 mi)
b. 20 km (12.5 mi)
p 5-60 Table 5.5
Maximum channel attenuation = 28 dB
The maximum standards-recommended length of a 10GPON is:
a. 10 km (6.2 mi)
b. 20.1 km (12.5 mi)
c. 40 km (25 mi)
d. 60 km (37 mi)
c. 40 km (25 mi)
p 5-60 Table 5.5
Maximum channel attenuation = 31 dB
The maximum standards-recommended length of a GPON (C+ Optics) is:
a. 10 km (6.2 mi)
b. 20.1 km (12.5 mi)
c. 40 km (25 mi)
d. 60 km (37 mi)
d. 60 km (37 mi)
p 5-60 Table 5.5
Maximum channel attenuation = 32 dB
10 Gb/s passive optical networks (10GPONs) require connectors that are capable of reducing back reflection in the _____ and above wavelength range.
a. 850 nm
b. 1310 nm
c. 1300 nm
d. 1500 nm
d. 1500 nm
p 5-58
It is recommended that APC connectors be utilized. The requirements for both current RF injection and current 10GPON and 10G-EPON solutions implies that the end-to-end optical fiber cabling link shall use APC connections to reduce back reflection in the 1500 nm and above wavelength range.
The OLT is commonly referred to as the aggregation point of a PON architecture. The OLT provides multiple high-bandwidth ___ and ___ Gb/s interfaces via pluggable optics.
a. 1, 10
b. 10, 40
c. 40, 100
a. 1, 10
p 5-58
The OLT is commonly referred to as the aggregation point of a PON architecture. The OLT provides multiple high-bandwidth 1 Gb/s and 10 Gb/s interfaces via pluggable optics to the:
- Customer WAN or core network.
- PON switch fabric.
- PON interface cards.
The recommended uniform load capacity for an access floor system to be installed in a medium-duty equipment room environment is:
a. 12 kPa (250 lbf/ft 2)
b. 9.6 kPa (200 lbf/ft 2)
c. 4.8 kPa (100 lbf/ft 2)
d. 2.4 kPa (50 lbf/ft 2)
c. 4.8 kPa (100 lbf/ft 2)
p 5-90
Equipment room (medium duty)
- Uniform Load Capacity ≈4.8 kPa (100 lbf/ft2)
- Concentrated Load Capacity ≈8.8 kN (2000 lbf)
General office (medium duty)
- Uniform Load Capacity ≈2.4 kPa (50 lbf/ft2)
Floor loading of equipment cabinets varies from:
a. 50 to 100 lbf/ft2
b. 50 to 250 lbf/ft2
c. 00 to 200 lbf/ft2
d. 100 to 300 lbf/ft2
a. 50 to 100 lbf/ft2
p 5-90
See Table 5.15
The recommended maximum cable length from the centralized crossconnect to the work area for the pull-through method of centralized optical fiber cabling is:
a. 500 m (1640 ft)
b. 300 m (984 ft)
c. 100 m (328 ft)
d. 90 m (295 ft)
d. 90 m (295 ft)
p5-45 Figure 5.21
The standards for Ethernet and 10 Gb/s Ethernet passive optical networks (EPON and 10G-EPON) are issued by:
a. ISO
b. TIA
c. IEEE
d. ITU
c. IEEE
p 5-57
GPON = ITU G.984
EPON = IEEE 802.3ah
10GPON = ITU G.987
10G-EPON = IEEE 802.3av
When testing the optical fiber cabling installed for a passive optical network (PON), the tester head stays stationary at the optical _____ terminal while the remote is moved across all splitter outputs
a. Unit
b. Source
c. Network
d. Line
d. Line
p 5-64
This should be an end-to-end test, placing one end of the tester at the primary PON singlemode optical fiber jumper cable that would connect to the OLT, through the splitter, and then allow for a reading to be taken on every drop cable at each ONT.
All optical fiber cabling within a PON installation should be tested for bidirectional loss at 1310 nm and 1550 nm wavelengths.
In a fiber-to-the-outlet (FTTO) installation, active LAN equipment in located in the TR.
a. True
b. False
b. False
p5-50
There is no active LAN equipment in the TR; the horizontal optical fiber cable is connected to the multi-strand backbone optical fiber cable by splicing as per the centralized cabling concept.
A fiber-to-the-outlet (FTTO) installation uses core and distribution switches that are located in the:
a. Equipment room
b. Telecommunications room
c. Work areas
a. Equipment room
p 5-54
The FTTO design uses core and distribution switches in the equipment room and the micro switches in work areas. There are no other active network equipment in the floor serving TR. The type and configuration of the core and distribution switches will depend upon the number of micro switches and the redundancy required.
When designing a centralized optical fiber cabling installation using the pull-through method, it is recommended to limit cabling length to the maximum allowed by the intended application or _____, whichever, is smaller.
a. 550 m (1804 ft)
b. 305 m (1000 ft)
c. 100 m (328 ft)
b. 305 m (1000 ft)
p 5-46
It is recommended that optical fiber cabling lengths do not exceed the maximum length limit for the application or ≈305 m (1000 ft), whichever is smaller.
