BICSI Outside Plant Designer (OSP) — Questions and Answers

Question 1: Under NESC Table 235-1, aerial communication cables must maintain minimum vertical clearance above roadways used by trucks. What is the typical minimum clearance?

22 feet
18 feet (Correct answer)
15.5 feet
12 feet

Correct answer: 18 feet

NESC requires a minimum 18-foot vertical clearance above roads accessible to trucks for communication cables under Grade C construction.

Question 2: Which standard governs fiber optic cabling systems?

ISO/IEC 11801 (Correct answer)
OSHA 1910
IEEE 1394
RFC 1918

Correct answer: ISO/IEC 11801

ISO/IEC 11801 is an international standard that specifies general-purpose telecommunications cabling for commercial buildings, covering both copper and fiber optic cabling systems. It defines the structure, performance, and installation requirements for various cabling types, including fiber optics. Adherence to this standard ensures consistent performance and interoperability of fiber optic infrastructure globally.

Question 3: Which pole classification system is most commonly used in the United States for specifying wood utility poles?

RUS 1724E-200 Specification
IEEE 691 Standard
ANSI O5.1 Classification (Correct answer)
NEC Article 230 Rating

Correct answer: ANSI O5.1 Classification

ANSI O5.1 is the American National Standard for wood poles used in utility construction, defining species, class, and length requirements.

Question 4: A network designer evaluating conduit fill rates is designing a new pull. Which maximum fill percentage is the standard industry guideline for conduit containing multiple cables?

40%
25%
75%
53% (Correct answer)

Correct answer: 53%

Industry guidelines (per NEC and Telcordia) specify a maximum conduit fill of 53% for three or more cables to allow pulling without excessive jamming probability.

Question 5: A Scope of Work (SOW) document in an OSP project differs from a design drawing because it:

Lists equipment serial numbers
Shows exact cable routes on a map
Contains OTDR splice loss values
Describes tasks, responsibilities, and deliverables in written form (Correct answer)

Correct answer: Describes tasks, responsibilities, and deliverables in written form

A Scope of Work defines what work will be performed, by whom, and what deliverables are expected, while drawings convey spatial and technical information graphically.

Question 6: Which OSP fiber cable type is specifically designed to be directly installed in duct or conduit without requiring a pull rope, due to its low-friction outer jacket?

Armored direct-burial cable
Microduct blown fiber cable (Correct answer)
Figure-8 self-supporting cable
ADSS (All-Dielectric Self-Supporting) cable

Correct answer: Microduct blown fiber cable

Microduct blown fiber (air-blown fiber) uses compressed air to float very lightweight fiber bundles through small conduits at high speed without mechanical pulling tension.

Question 7: In a fiber optic OSP design, the term 'optical budget' refers to:

The wavelength range supported by the cable
The total cost of fiber and hardware
The maximum allowable power loss between transmitter and receiver (Correct answer)
The number of fiber strands available in a route

Correct answer: The maximum allowable power loss between transmitter and receiver

Optical power budget is the difference in dB between the transmitter output power and the minimum receiver sensitivity, representing the maximum tolerable link attenuation.

Question 8: When splicing a loose-tube OSP fiber cable, what must be done with the water-blocking gel (thixotropic gel) inside the buffer tubes before splicing?

It must be replaced with UV-curable adhesive
It must be cleaned off the fibers using an approved solvent such as isopropyl alcohol (Correct answer)
It must be left in place to protect the splice
It must be heated to reactivate its waterproofing

Correct answer: It must be cleaned off the fibers using an approved solvent such as isopropyl alcohol

The water-blocking gel inside loose-tube buffer tubes must be thoroughly cleaned off the fibers using an approved solvent like isopropyl alcohol before splicing to ensure proper fiber preparation and splice quality.

Question 9: Which copper cable configuration is MOST susceptible to cross-talk interference in a dense multi-pair outside plant environment?

Unshielded twisted pair with identical twist rates across all pairs (Correct answer)
Filled gel copper cable with armor
Aerial self-supporting cable with central strength member
Direct burial twisted pair with individually shielded pairs

Correct answer: Unshielded twisted pair with identical twist rates across all pairs

Pairs with identical twist rates run parallel to each other for long distances, creating maximum coupling and cross-talk between pairs; varying twist rates reduce this interference.

Question 10: What is 'lashing' in the context of aerial cable installation?

Attaching guy wires to anchor plates
Securing aerial cable to a messenger strand using a lashing wire (Correct answer)
Tying cables to ground anchors for support
Bonding cable sheaths to the grounding system

Correct answer: Securing aerial cable to a messenger strand using a lashing wire

Lashing is the process of spirally wrapping a lashing wire around both the messenger strand and the cable to mechanically support the cable in the air.

Question 11: Which manhole class designation according to AASHTO standards is typically specified for manholes installed under paved roadways that may carry heavy truck traffic?

Class A (light duty)
Class C (heavy duty) (Correct answer)
Class D (extra heavy duty)
Class B (medium duty)

Correct answer: Class C (heavy duty)

AASHTO Class C (heavy duty) manholes are specified for installations under paved roadways subject to heavy truck traffic, meeting H-20 or higher load ratings.

Question 12: What is the purpose of a 'stub pole' in aerial plant construction?

A temporary pole used only during cable installation
A short pole section added to extend the height of an existing pole
A decorative pole used at property boundaries
A pole installed beside a deteriorating pole to transfer its loads (Correct answer)

Correct answer: A pole installed beside a deteriorating pole to transfer its loads

A stub pole (also called a replacement stub) is a short pole installed adjacent to a weak or damaged pole to transfer mechanical loads until a full replacement can be made.

Question 13: Which OSP design document defines the specific fiber assignments (which fiber is used for which circuit) across a cable sheath?

Fiber assignment record or fiber assignment chart (Correct answer)
Bill of materials
Route map
As-built drawing showing conduit depth

Correct answer: Fiber assignment record or fiber assignment chart

A fiber assignment record (or chart) documents which specific fibers within a cable are assigned to particular circuits, splices, or customers.

Question 14: Which standard provides the basis for joint-use pole loading calculations used by OSP designers when adding new cable to a utility pole?

ASTM F1600
NESC (ANSI C2) (Correct answer)
TIA-758
IEEE 802.3

Correct answer: NESC (ANSI C2)

The National Electrical Safety Code (NESC, ANSI C2) provides the standards for pole loading, clearances, and safety requirements governing utility and communication attachments.

Question 15: Which statement BEST describes the relationship between Outside Plant Designer certification and industry evolution?

Requirements evolve periodically to reflect advances in knowledge and practice (Correct answer)
Changes only occur when government mandates them
Certification requirements never change
Requirements become less stringent over time

Correct answer: Requirements evolve periodically to reflect advances in knowledge and practice

Certification requirements evolve to keep pace with professional and technological advances.

Question 16: What is the maximum recommended pulling tension for a standard single-mode fiber optic cable with a rated tensile load of 600 N during installation?

900 N (150% of rated)
600 N
60 N (10% of rated)
300 N (50% of rated) (Correct answer)

Correct answer: 300 N (50% of rated)

Best practice recommends limiting installation pulling tension to no more than 50% of the cable's rated tensile load to provide a safety margin and prevent microscopic fiber stress that could increase attenuation over time.

Question 17: What is the standard color coding for HDPE conduit designated for fiber optic telecommunications in US outside plant applications?

Red
Orange (Correct answer)
Yellow
Blue

Correct answer: Orange

Orange is the standard color designation for telecommunications fiber optic conduit in US OSP applications, helping field crews identify the correct conduit type during installation and maintenance.

Question 18: Which copper cable test parameter measures the ability of a cable to reject unwanted signals from external electromagnetic sources?

Propagation delay
Return loss
Insertion loss
Transfer impedance (shield effectiveness) (Correct answer)

Correct answer: Transfer impedance (shield effectiveness)

Transfer impedance (or shield effectiveness) quantifies how well a cable's shield prevents external EMI from coupling onto the signal conductors.

Question 19: Which standard published by ATIS (Alliance for Telecommunications Industry Solutions) governs the design of underground conduit systems for OSP?

NESC Rule 320
ANSI/TIA-568
IEEE 802.3
ATIS-0600315 (Correct answer)

Correct answer: ATIS-0600315

ATIS-0600315 (formerly ANSI T1.315) is the primary ATIS standard governing the design and construction of underground conduit and duct systems for outside plant telecommunications.

Question 20: What is the main consideration when selecting a cable route for OSP deployment?

Maximizing scenic views
Avoiding utility conflicts and minimizing disruptions (Correct answer)
Following vehicle traffic patterns
Proximity to fast food restaurants

Correct answer: Avoiding utility conflicts and minimizing disruptions

The main consideration when selecting a cable route for Outside Plant (OSP) deployment is avoiding utility conflicts and minimizing disruptions. New infrastructure must coexist with existing utilities like gas, water, and power lines, requiring careful planning to prevent damage, service outages, and costly repairs. Minimizing disruptions to traffic, businesses, and residents also ensures project efficiency, public safety, and acceptance.

Question 21: In OSP planning, what does 'innerduct' provide inside a larger conduit?

Structural reinforcement against soil pressure
Separate sub-pathways that allow multiple cables to be pulled and identified independently (Correct answer)
Waterproofing for the conduit interior
Electrical isolation between cables

Correct answer: Separate sub-pathways that allow multiple cables to be pulled and identified independently

Innerduct subdivides a conduit into multiple smaller channels so different cable systems can be installed, removed, or upgraded without disturbing others.

Question 22: What is the function of a 'bonding wire' installed between the aerial strand and a ground rod at each pole?

To mechanically anchor the strand to the pole
To reduce electromagnetic interference on the cable
To provide electrical continuity for the strand and safely dissipate fault currents and lightning (Correct answer)
To test the continuity of the messenger strand

Correct answer: To provide electrical continuity for the strand and safely dissipate fault currents and lightning

Bonding the aerial strand to ground rods at each pole provides electrical continuity and a low-impedance path to earth for fault currents and lightning energy, protecting equipment and personnel.

Question 23: What is the maximum allowable unsupported span for aerial self-supporting (ADSS) fiber cable in a standard residential deployment without additional mid-span support?

100 feet
300 feet
200 feet
Span limits depend on cable design and local loading zone, typically specified by the manufacturer (Correct answer)

Correct answer: Span limits depend on cable design and local loading zone, typically specified by the manufacturer

ADSS span capability varies by cable design, sag requirements, and NESC loading zone; manufacturers publish span tables that must be consulted.

Question 24: What type of fiber splice provides the lowest insertion loss and is preferred for permanent OSP connections?

Fusion splice (Correct answer)
SC connector splice
Mechanical splice using index-matching gel
Cleave-and-crimp splice

Correct answer: Fusion splice

Fusion splicing melts fiber ends together, eliminating air gaps and producing insertion losses typically below 0.1 dB, far better than mechanical methods.

Question 25: In OSP documentation, 'station numbering' or 'chainage' refers to:

A distance-based coordinate system used to locate features along a route (Correct answer)
The number of cable pairs in a binder group
The sequential numbering of splice cases
Customer service order tracking numbers

Correct answer: A distance-based coordinate system used to locate features along a route

Stationing or chainage assigns incremental distance markers along a route, enabling precise location of buried infrastructure features on plan drawings.

Question 26: How does the OSP body of knowledge relate to daily professional practice?

It is only for academic research
It provides the foundational framework guiding decision-making and standard practices (Correct answer)
It is theoretical with limited application
It only applies during exams

Correct answer: It provides the foundational framework guiding decision-making and standard practices

The body of knowledge provides the framework guiding daily decision-making and practices.

Question 27: Which environmental review law requires federal agencies to assess the environmental impact of major OSP projects before issuing approvals or permits?

National Environmental Policy Act (NEPA) (Correct answer)
Endangered Species Act (ESA) Section 9
Clean Air Act (CAA)
Resource Conservation and Recovery Act (RCRA)

Correct answer: National Environmental Policy Act (NEPA)

NEPA requires federal agencies to evaluate environmental consequences of major federal actions (including permits for large OSP projects) through an Environmental Assessment or EIS.

Question 28: What is the minimum vertical clearance required for communication cables crossing a public road according to the National Electrical Safety Code (NESC)?

18 feet
16.5 feet (Correct answer)
15.5 feet
12 feet

Correct answer: 16.5 feet

The NESC requires a minimum vertical clearance of 16.5 feet for communication cables crossing roads open to truck traffic.

Question 29: In OSP fiber splicing, what does OTDR stand for and what is its primary use during splice testing?

Optical Transfer Data Recorder; stores splice documentation
Optical Time Domain Reflectometer; measures splice loss and locates faults along the fiber (Correct answer)
Output Test Device Reader; calibrates the splice machine
Optical Trace Display Reader; shows fiber color coding

Correct answer: Optical Time Domain Reflectometer; measures splice loss and locates faults along the fiber

An OTDR (Optical Time Domain Reflectometer) sends a light pulse into the fiber and measures backscattered light to calculate splice loss, connector reflectance, and the distance to faults or end points.

BICSI Outside Plant Designer (OSP)

The BICSI OSP certification validates expertise in designing telecommunications outside plant infrastructure including aerial, underground, and buried cable systems. The exam covers pre-design preparation, site surveys, media selection, pathway design, and professional practices.

Questions

35 min

Time Limit

75%

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