Dump cfhp exam 2021

CFHP Exam 2021 Revision
Part A:
1 of 10: This part of a PON system is located at the central office.
EDFA
FDH
OLT
ONT
2 of 10: Products which fall into this category include splitters, filters, and WDMs
Active devices
Active Ethemet
Optical switches
Passive devices
3 of 10: This single-mode fiber is specified by the ITU and IEEE for FTTH outside plant installations.
G.654
G.652
G.657
G.655
4 of 10: This part of a PON system is located at the user's home or business.
ONT
EDFA
OLT
FDH
5 of 10: What is the theoretical attenuation level of a 1:32 optical splitter?
12 dB
3 dB
6 dB
15 dB
6 of 10: When planning for cable slack storage and cable bend radius requirements after the cable has
been installed, what bend radius value should the designer use
5 X its Outside Diameter
10 X its Outside Diameter

20 X its Outside Diameter
15 X its Outside Diameter


7 of 10: Which of the FTTH standards provides dedicated bandwidth to each subscriber?
EPON
G-PON
B-PON
Active Ethernet
8 of 10: Which of the following is an example of symmetrical transmission?
RF video at 1550 nm downstream with the return path at 1550 nm upstream.
622 Mb/s downstream/155 Mb/s upstream
1G downstream/1G upstream
G-PON downstream and EPON upstream
9 of 10: When designing a FTTH system, the designer must decide to use either an Active Ethernet
system or a based
PON
Wireless
RFOG
Multimode
10 of 10: All designers of fiber optic based systems must address three critical properties of fiber optics
for proper operation. Other than attenuation and dispersion what is the third critical property?
Reflectance
Color codes
Eye pattern
Modal dispersion
Part B
This part of the Certified Fiber to the Home Professional (CFHP) Online Exam consists of 65
questions to be completed.

Question
1 of 65

Which of the following video transmission formats requires the highest bandwidth?
SDTV
HDTV
UHDTV
EDTV
Question
2 of 65

Which of the following is an active device?


Distributed Feedback Laser
Wavelength Blocker
Optical Splitter
Wavelength Division Multiplexer
Question
3 of 65

This function in the G.984 standard allows the transmission of both cells and packets. What is it called?
G-PON Encapsulation Method (GEM)
Wavelength Division Multiplexing (WDM)
Forward Error Correction (FEC)
Digital Signal Processing
Question
4 of 65

An L or SC connector with a green housing commonly indicates which of the following?

Single-mode UPC
Multimode GHC
Single-mode APC
None of the above
Question
5 of 65

What defines a fiber optic active device?
It has no attenuation
It has moving parts
It requires electrical power
It is defined by the ITU G.671 specification
Question
6 of 65

This outside plant product is also called a pedestal.
Fiber Access Terminal
Fiber Distribution Hub
Optical Entrance Enclosure
Multiport Service Terminal
Question
7 of 65

If future use of coarse wavelength division multiplexing is planned for transmission in the E-band, what
fiber should be specified?
G.655


G.652
G.652D

G.657
Question
8 of 65

Download speed improves when more _________ is available.
Laser Type
Bandwidth
Audio Splitter Ratio
Attenuation
Question
9 of 65

This band specified in the legacy FTTx standards specify the optical spectrum where RF video distribution
is transmitted.
Enhancement Band
Basic Band
Intermediate Band
O-Band
Question
10 of 65

Which type of dispersion mainly affects single-mode fibers?
Chromatic
Material
Waveguide
All of the Above
Question
11 of 65

Fiber optic test equipment will not test __________ problems.

Bit Error Rate
Dispersion
Attenuation
Reflectance
Question
12 of 65

Maintenance cost is considered:
CAPEX
Both
OPEX


Neither
Question
13 of 65

Yield and labor directly affect the ____________ of a termination regardless of the type selected?
Optical Reflectance
Installed Cost
Slack Storage Options
Attenuation Levels
Question
14 of 65

The first FTTx standard issued as ITU-T G.983 defined a fiber optic PON for fiber-to-the-home networks.
What does the acronym PON mean?
Proprietary Optical Network
Planned Optical Node
Passive Optical Network

Plain Old Network
Question
15 of 65

What instrument is used to test the OLT transmit and receive power levels?
OTDR
CD/PMD Tester
Optical Spectrum Analyzer
Optical Power Meter
Question
16 of 65

What does the term "class" mean for OLT and ONTs as applied to the optical interfaces?
Protocol Used
Optical Power Levels
Type of Compatible Interface
Data Rate of the Protocol
Question
17 of 65

Which of these terms defines voice, video and data communications?
Active Ethernet
PON
Triple Play
ISDN


Question
18 of 65

What is the standard for the G-PON specification?
FSAN
ITU-T G.983
ITU-T G.984
IEEE 802.3
Question
19 of 65

What wavelength window is specified as the “original” band by the ITU?
850 nanometers
1550 nanometers
1625 nanometers
1310 nanometers
Question
20 of 65

This type of panel is used to store slack cable if the ONT is not being installed.
Fiber Transition Terminal
MST
Splice Closure
FAT
Question
21 of 65

GIS data is helpful with ______?
Network planning
Network construction
Network maintenance
All of the above
Question

22 of 65

Which of these physical topologies is used for increased reliability of feeder routes?
Bust
Ring
Point-to-Point
Star
Question
23 of 65

What does the acronym FTTH mean?


Fiber to the Hub
Fiber to the Hotel
Fiber to the Headend
Fiber to the Home
Question
24 of 65

This ITU specified 7.5MM bend radius or better fiber type is recommended for us in MDU risers.
G 652.D
G 655
G 657 A1
G 657 A2
Question
25 of 65

When does OPEX occur?
During the design phase.

During the procurement phase.
During the operations phase.
During the construction phase.
Question
26 of 65

The Erbium Doped Fiber Amplifier (EDFA) is most often used in what type of FTTx system?
10G-PON
10G EPON
WDM-PON
RFoG
Question
27 of 65

What needs to be taken into account when upgrades from one system to another are considered?
Cable Slack
Spares
Mid-Entry Access
Migration Plan
Question
28 of 65

This standard can transmit at 10 gigabit per second downstream and either 10 or 1 gigabit per second
upstream.
G-PON


RFoG
10G EPON
B-PON

Question
29 of 65

This type of loss budget works best for contractors and inspectors.
Optical Dispersion
Not to Exceed
Point to Point
End to End
Question
30 of 65

This product is most often used to house optical splitters in centralized splitting architectures.
FDH
MST
WDM
FAT
Question
31 of 65

Which is not a diagnostic for rogue mitigation?
Observe LEDs on ONT
Manually disconnect ONTs at the splitter location
Utilize rogue detection and mitigation capabilities from the OLT EMS
Disable all ONTs on the PON for transmission and reactivate one by one until the Roque condition
reappears
Question
32 of 65

Most splitters used in PON networks are a 1:N configuration. When would a 2:N splitter be used?
To compensate for latency

For redundancy
To reduce space in a splitter cabinet
To add optical attenuation
Question
33 of 65

This fiber structure enables splicing of multiple fibers at one time.
Ribbon
Loose tube
Tight buffer


Multicore
Question
34 of 65

As more subscribers are added to an installed FTTH system, what does this improve?
Take Rate
Attenuation Level
User Density
OPEX
Question
35 of 65

The three parts of an optical fiber are:
Core, Coating Kevlar™
Core, Cladding, Coating
Core, Cladding, Central Member
Core, Coating, Central member
Question

36 of 65

PON based systems use this topology
Star
Point to Point
Bus
Ring
Question
37 of 65

Which Ethernet standard used in FTTH designs was first released in 2004?
SCTE 174
ITU G.983
IEEE 802.3ah
ITU G.984
Question
38 of 65

Which of these is considered a network architecture?
Self Healing Ring
FTTH
G-PON
P2MP
Question
39 of 65


What does the acronym FTTH mean?
Fiber to the Hub
Fiber to the Hotel

Fiber to the Headend
Fiber to the Home
Question
40 of 65

This fiber is ideal for use inside FTTB installations due to its ability to handle extrinsic stresses
G.653
G.652D
G.657
G.671
Question
41 of 65

This specialized product has ports for use with connecting drop cables with hardened fiber optic
connectors.
WDM
FAT
MST
FDH
Question
42 of 65

How much optical attenuation is specified in the differential optical path loss (DOPL) to account for the
attenuation of an optical splitter?
10 dB
15 dB
20 dB
30 dB
Question
43 of 65

What standards group publishes video compression standards?
MPEG
ANSI
IEC
SCTE
Question
44 of 65

Which of these cable styles is overlashed when used in aerial OSP construction?


Loose Tube
Figure 8
ADSS
Breakout
Question
45 of 65

Which safety function is built into ONTs?
Laser transmission at -20 dBm
Upstream optical automatic power shutdown
Keylock access to connector port
Safety interlock at panel door
Question
46 of 65

The first FTTx standard issued as ITU-T G.983 defined a fiber optic PON for fiber-to-the-home networks.
What does the acronym PON mean?
Proprietary Optical Network

Planned Optical Node
Passive Optical Network
Plain Old Network
Question
47 of 65

What band is used to define the optical spectrum for legacy upstream transmission from an ONT?
Enhancement Band
O-Band
Guard Band
Basic Band
Question
48 of 65

This architecture requires more connector and rack unit space in hub locations.
Active Ethernet
G-PON
B-PON
GEPON
Question
49 of 65

The dB per kilometer loss is dependent upon:
Power Level
Bandwidth


Dispersion
Wavelength
Question

50 of 65

What do Active Ethernet used in the outside plant and HFC have in common?
They both use optical amplifiers
They are both strictly digital
They both require power in the OSP
They both use the star topology
Question
51 of 65

This type of power meter is designed for testing bi-directional FTTH installations.
Multiwavelength Meter
PON Meter
High Power Meter
MMF/SMF
Question
52 of 65

The most common connector style used in the OSP is this type.
MPO
SC
ST
LC
Question
53 of 65

When discussing topology, which of these is the best description?
Management
Physical
Flexible

Operational
Question
54 of 65

This architecture places the optical splitter in one location.
Centralized
Tapered
Point-to-Point
Distributed
Question
55 of 65


One method to reduce CAPEX is
Build the maintenance software into the product procurement.
Work with other utilities to joint trench.
Design for coexistence.
Upgrade to 10G WDM services.
Question
56 of 65

What is the light transmission area called in a single-mode fiber?
Mode Field Diameter
Center Wavelength
Cladding
Buffering
Question
57 of 65

Which technology requires a much deeper fiber plant in order to meet the increasing bandwidth

requirements for wireless networks?
5G
4G
RFoG
Security
Question
58 of 65

This is a common interior fiber/cabling pathway within an MDU
Riser
Hallway
Unit
All of the above
Question
59 of 65

The terms NG-PON1 and NG-PON2 are from FSAN. What does NG stand for?
Nano Generation
Next Gigabit
Next Generation
Notification Gigabit
Question
60 of 65

This parameter identifies the designed level of attenuation between the service provider and the
subscriber.
Loss Budget


Class of Service

Dispersion Budget
QoS
Question
61 of 65

This term defines the sum of all reflections in a span.
Fresnel QOS
Optical Return Loss
Reflectance
Optical Transvergence
Question
62 of 65

This cable construction type is used in outside plant distribution of FTTH.
Central tube
Stranded loose tube
Micro
All of the above
Question
63 of 65

Due to its lower costs, what generation of WDM is most likely to be used in feeder applications?
WWDM
DWDM
CWDM
3 GHz DWDM
Question
64 of 65

Which of these laser types are used in 10G-PON systems?

Fabry-Perot
VcSel
EDFA
Distributed Feedback
Question
65 of 65

What does the term Rogue ONT mean?
An unauthorized ONT
A dedicated ONT
An ONT that sends upstream signals that conflict with transmissions assigned by the OLT for other
ONTs


An ONT that exceeds the number of ONTs in an ODN

CFHP Exam 2021 Revision
Part A:
1 of 10: Products which fall into this category include splitters, filters, and WDMs.
Active Ethernet
Optical switches
Passive devices
Active devices
2 of 10: This single-mode fiber is specified by the ITU and IEEE for FTTH outside plant installations.
G.657
G.654
G.655
G.652
3 of 10: This part of a PON system is located at the user's home or business.
OLT

FDH
EDFA
ONT
4 of 10: This standard can transmit both ATM cells and Ethernet packets.
G-PON (ITU-T G.984)
B-PON (ITU-T G.983)
EPON (IEEE 802.3ah)
RFOG (SCTE 174)
5 of 10: What is the theoretical attenuation level of a 1:32 optical splitter?
12 dB
3 dB
6 dB
15 dB
6 of 10: When planning for cable slack storage and cable bend radius requirements after the cable has
been installed, what bend radius value should the designer use
5 X its Outside Diameter


10 X its Outside Diameter
20 X its Outside Diameter
15 X its Outside Diameter
7 of 10: Which of the FTTH standards provides dedicated bandwidth to each subscriber?
EPON
G-PON
B-PON
Active Ethernet
8 of 10: This allows multiple data rates using different protocols over the same ODN.
B-PON
3DTV
Coexistence

Symmetrical transmission
9 of 10: All designers of fiber optic based systems must address three critical properties of fiber optics for
proper operation. Other than attenuation and dispersion what is the third critical property?
Color codes
Modal dispersion
Reflectance
Eye pattern
10 of 10: What must designers consider when designing the capacity of a network?
Environmental considerations
Maximum User Density
Splitter Location(s)
Splitter Take Rate
Part B: This part of the Certified Fiber to the Home Professional (CFHP) Online Exam consists of
65 questions to be completed.
Question
1 of 65

This function in the G.984 standard allows the transmission of both cells and packets. What is it called?
G-PON Encapsulation Method (GEM)
Wavelength Division Multiplexing (WDM)
Forward Error Correction (FEC)
Digital Signal Processing
Question


2 of 65

PON based systems use this topology
Star
Point to Point

Bus
Ring
Question
3 of 65

This specialized product has ports for use with connecting drop cables with hardened fiber optic
connectors.
WDM
FAT
MST
FDH
Question
4 of 65

This band specified in the legacy FTTx standards specify the optical spectrum where RF video distribution
is transmitted.
Enhancement Band
Basic Band
Intermediate Band
O-Band
Question
5 of 65

What does the acronym FTTH mean?
Fiber to the Hub
Fiber to the Hotel
Fiber to the Headend
Fiber to the Home
Question
6 of 65

Which of the following video transmission formats requires the highest bandwidth?
SDTV
HDTV
UHDTV
EDTV
Question
7 of 65

What does the term Rogue ONT mean?


An unauthorized ONT
A dedicated ONT
An ONT that sends upstream signals that conflict with transmissions assigned by the OLT for other
ONTs
An ONT that exceeds the number of ONTs in an ODN
Question
8 of 65

Which type of PON system uses tunable components?
G-PON
Active Ethernet
NGPON2
10GEPON
Question
9 of 65

Which of these physical topologies is used for increased reliability of feeder routes?
Bust

Ring
Point-to-Point
Star
Question
10 of 65

Which is not a diagnostic for rogue mitigation?
Observe LEDs on ONT
Manually disconnect ONTs at the splitter location
Utilize rogue detection and mitigation capabilities from the OLT EMS
Disable all ONTs on the PON for transmission and reactivate one by one until the Roque condition
reappears
Question
11 of 65

Maintenance cost is considered:
CAPEX
Both
OPEX
Neither
Question
12 of 65

OTDRs and optical loss test sets are used for testing:
Physical Plant Attenuation
Transmission Equipment


Optical Dispersion
IP Quality of Service

Question
13 of 65

The three parts of an optical fiber are:
Core, Coating Kevlar™
Core, Cladding, Coating
Core, Cladding, Central Member
Core, Coating, Central member
Question
14 of 65

This polish is most commonly used in FTTH equipment due to its low reflectance level.
APC
SPC
UPC
PC
Question
15 of 65

Which of these cable styles is overlashed when used in aerial OSP construction?
Loose Tube
Figure 8
ADSS
Breakout
Question
16 of 65

Which technology requires a much deeper fiber plant in order to meet the increasing bandwidth
requirements for wireless networks?
5G

4G
RFoG
Security
Question
17 of 65

Yield and labor directly affect the ____________ of a termination regardless of the type selected?
Optical Reflectance
Installed Cost
Slack Storage Options


Attenuation Levels
Question
18 of 65

Which of these is considered a network architecture?
Self Healing Ring
FTTH
G-PON
P2MP
Question
19 of 65

Which FTTH architecture is more complex for record documentation?
Home Run Split
Distributed Split
Active Ethernet
Centralized Split
Question

20 of 65

What does the term green field mean?
An upgrade to an existing location.
When a new development or building is being cabled.
Overlaying an older media with new fiber optic service.
A high scale sports arena or convention center.
Question
21 of 65

Which safety function is built into ONTs?
Laser transmission at -20 dBm
Upstream optical automatic power shutdown
Keylock access to connector port
Safety interlock at panel door
Question
22 of 65

Most splitters used in PON networks are a 1:N configuration. When would a 2:N splitter be used?
To compensate for latency
For redundancy
To reduce space in a splitter cabinet
To add optical attenuation
Question
23 of 65

This type of panel is used to store slack cable if the ONT is not being installed.