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 A.

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

Distributed Feedback Laser

Wavelength Division Multiplexing (WDM)

Forward Error Correction (FEC)

Digital Signal Processing

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

Fiber optic test equipment will not test problems.

Bit Error Rate

Proprietary Optical Network

Planned Optical Node

Passive Optical Network

Plain Old Network

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

Fiber to the Hub

Fiber to the Hotel

Fiber to the Headend

Fiber to the Home

When does OPEX occur?

During the design phase

During the procurement phase

During the operations phase

During the construction phase

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

The three parts of an optical fiber are:

Core, Coating Kevlar™

Core, Cladding, Coating

Core, Cladding, Central Member

Core, Coating, Central member

Which of these is considered a network architecture?

Self Healing Ring

What does the acronym FTTH mean?

Fiber to the Hub

Fiber to the Hotel

Fiber to the Headend

Fiber to the Home

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

They are both strictly digital

They both require power in the OSP

They both use the star topology

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

An ONT that exceeds the number of ONTs in an ODN

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?

Splitter Take Rate

Part B: This part of the Certified Fiber to the Home Professional (CFHP) Online Exam consists of

Wavelength Division Multiplexing (WDM)

Forward Error Correction (FEC)

Digital Signal Processing

Question

What does the acronym FTTH mean?

Fiber to the Hub

Fiber to the Hotel

Fiber to the Headend

Fiber to the Home

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

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

Attenuation Levels

Question

18 of 65

Which of these is considered a network architecture?

Self Healing Ring

Which FTTH architecture is more complex for record documentation?

Home Run Split

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

Fiber Transition Terminal

When does OPEX occur?

During the design phase

During the procurement phase

During the operations phase

During the construction phase

Question

28 of 65

Which of these terms defines voice, video and data communications?

Active Ethernet

Fiber optic test equipment will not test problems.

Bit Error Rate

They are both strictly digital

They both require power in the OSP

They both use the star topology

What does the “BX” refer to in the Ethernet specification:

Single Fiber Bidirectional Transmission

Distance and Data Rate

Dual Fiber Transmission

Active Ethernet

Question

39 of 65

A commercial plaza, sometimes called a strip mall, would be considered a _?

Which consideration is NOT ideal when designing FTTH?

Four (4) main feeder routes from a node

Cabinets and network elements placed centrally

Branch feeders perpendicular to the main feeder

Designing fiber count for an estimated 50% take rate

Question

41 of 65

What is the best description of network architecture?

It focuses on how the system elements communicate

It is 100% standards based

It defines the physical layout of the system

It defines the optical loss budget

What does the acronym FTTH mean?

Fiber to the Hub

Fiber to the Hotel

Fiber to the Headend

Fiber to the Home

Question

53 of 65

What is the light transmission area called in a single-mode fiber?

Mode Field Diameter

One method to reduce CAPEX is

Build the maintenance software into the product procurement

Work with other utilities to joint trench

Design for coexistence

Spectral width of a laser light source directly affects

Optical Return Loss

It has moving parts

It requires electrical power

It is defined by the ITU G.671 specification

DUMP:

A commercial plaza used for businesses would be considered:

A distributed feedback laser is considered to be:

Learning Objectives

A fiber access terminal is the term used for this outside plant product

A laser light source’s spectral width directly affects:

A multiport service terminal (MST) is a specialized product with ports that are used to:

Splice drop cables using conventional pigtails

Connect drop cables with hardened fiber optic connectors

Assign wavelengths for customer allocation

Route fibers in the fiber distribution hub

After the cable has been installed, what bend radius value should the designer use for standard fiber cables?

Allowing different data rates using multiple protocols over the same ODN is referred to as:

5X its outside diameter

15X its outside diameter

10X its outside diameter

20X its outside diameter

3DTV

Coexistence

B-PON

Symmetrical transmission

What term describes time delays?

What does the term "class" mean?

Dispersion compensation

Bit error rate

Latency

Signal to noise ratio

Type of compatible interface

Data rate of the protocol

Optical power levels

Protocol used

What is the industry standard value for splice attenuation commonly used by service providers?

Which standard is used for IP system testing?

First released in 2004, some FTTH designs use this Ethernet standard

SCTE 174

ITU-T G.984

IEEE 802.3ah

B-PON

Which wavelength is allocated for downstream transmission of 10 Gigabit next generation systems?

14 What test do manufacturers normally use to quickly qualify optical components and systems?

End to end attenuation

Eye pattern or bit error rate

End to end dispersion

15 What fiber should be used for transmission in the E-band?

16 Which of these laser types is used in 10 Gigabit systems?

In the G.984 standard, what function allows the transmission of both cells and packets?

In order to minimize cable lengths, where within the service area(s) should splitters be placed?

In the Ethernet specification 1000BASE-BX10, what does the "BX" indicate?

Dual fiber transmission

Digital signal processing

G-PON encapsulation method (GEM)

Forward error correction (FEC)

Wavelength division multiplexing (WDM)

Central office

Outside

Subscriber locations

Center

Per ITU-T G.984, G-PON can transmit both ATM cells and:

Ethernet packets

SCTE 174

RS-232 signals

ITU-T G.983

Migration and coexistence with G-PON were included with this standard

What percentage of Internet traffic is estimated to be video in 2021?

78%

82%

87%

90%

Which of these is a protocol standard?

Which type of architecture places splitters in multiple locations?

What wavelength is used for RF video distribution?

Single-mode fibers are mostly affected by which type of dispersion?

Splitters, filters, and WDMs are examples of this type of product

Standard ITU-T G.652 single-mode fiber is optimized for dispersion at which wavelength?

The O-band is also referred to as the second loss window and the wavelengths used are centered around:

The next generation 10 Gigabit systems provide coexistence with the existing ODN of which standard?

ITU-T G.987

Active Ethernet

G-PON

SONET/SDH

The aggregate bandwidth of an FTTH system is impacted by the:

The amount of loss in a single-mode fiber (dB/km) is dependent upon:

What does the acronym TWDM represent?

What band is used by the optical spectrum defined for upstream transmission from an ONT?

O-band

Guard band

Enhancement band

Basic band

The ratio of subscribers to potential subscribers in a serving area is referred to as:

The sum of all reflections in a span is defined as:

Transmission wavelength division modulation

Time wavelength division multiplexing

Transmission wavelength dependent multiplexing

Time and wavelength dependent modulation

Network architecture is best described as:

The optical loss budget

100% standards based

How the system elements communicate

The physical layout of the system

The third loss window of fiber optics is centered around 1550 nm and is also known as:

Multimode

The original band

The C-band

The L-band

When selecting an FTTH system, designers can choose between a PON or:

The PON power meter is used for:

Which group developed the S652 document, which the ITU's Study Group 15 later issued as the B-PON standard?

What improves when more bandwidth is available in a video system?

Which standard can transmit at either 10 or 1 Gigabit per second upstream and 10 Gigabit per second downstream?

This technology is changing to packet based transmission due to the increasing amount of IP traffic

The three properties that are critical for proper operation of fiber optic based systems are attenuation, dispersion and:

To account for the attenuation of an optical splitter, how much optical attenuation is specified in the differential optical path loss?

10 dB

15 dB

20 dB

30 dB

Which type of panel, also known as an NIU, is used to store slack cable at the subscriber location?

Fiber transition terminal

Multiport service terminal

Fiber access terminal

Splice closure

Transmitting IP packets is ideal for this protocol

Which standards group publishes video compression standards?

What does dynamic bandwidth allocation do?

It allocates bandwidth in the upstream direction

It allocates bandwidth in the downstream direction

It reduces power requirements

It assigns time slots

What defines the minimum and maximum attenuation levels in the outside plant?

Which generation of WDM is most likely to be used in feeder applications due to costs?

What is improved as more subscribers are added to an installed FTTH system?

What is the ITU-T G.984 standard more commonly referred to as?

What is the light transmission region called in a single-mode fiber?

Attenuated power level

Allowable path loss

ATM PON level

Amplified power level

Which of these is used when additional receiver sensitivity is required?

When an optical splitter has the same attenuation characteristics at different wavelengths and directions, what term is applied to them?

When considering the capacity of a network, designers must take this into account

Splitter take rate

Environmental considerations

Maximum user density

Splitter location(s)

Which standard is the best when dedicated bandwidth to each subscriber is a concern?

When mapping cables, what does F1 designate?

When measuring optical power, the optical power meter should be configured to display in which units?

What is the term used to describe when a PON system extends beyond 20 kilometers?

When this architecture is used, more connector and rack unit space in hubs at service providers is

required

When would a 2:N splitter be used in PON networks instead of the traditional 1:N configuration?

Which of the following is an example of asymmetrical transmission?

Link between the FDH and the FAT, MSTs, or splice closures

Link between the FDH and the subscriber

Link from the service provider and the optical splitter

For route redundancy

To compensate for latency

To reduce space in a splitter cabinet

To add optical attenuation

Which of the following OSP test is the most difficult test to perform?

What is the center wavelength for downstream TWDM transmission, per ITU-T G.989?

Which of these four options is considered best for storing drop cable slack in PONs?

Which of these is considered a network architecture?

Which polish is used in FTTH because it has low reflectance?

622 Mb/s downstream, 155 Mb/s upstream

G-PON downstream, EPON upstream

RF video at 1550 nm downstream with the return path at 1550 nm upstream

1G downstream, 1G upstream

Bit error rate testing

ONT Tx power level

SFP power level at active Ethernet switch

Eye pattern testing

Close to the splitter

At the central office

Which service can be added to most PON systems using WDM technology?

While it is easy to multiplex light, demultiplexing requires: