RCDD Exam Latest Actual Questions

RCDD Exam / | Latest Actual Questions with Correct Verified Answers | Already Graded A+​ Registered Communications Distribution Designer (RCDD) | Telecommunications Infrastructure, Structured Cabling, Network Design, Data Centers, Codes & Standards | Expert-Verified Q&A | Certification-Ready

Introduction​ This document provides the most updated RCDD Exam content for the / cycle. It includes actual exam-style questions with 100% verified correct answers. Key domains include structured cabling systems, telecommunications pathways and spaces, data center infrastructure, outside plant (OSP) design, and industry standards (BICSI, TIA, and NEC).Aligned with BICSI’s Telecommunications Distribution Methods Manual (TDMM) and industry best practices, all answers are expert-verified, graded A+, and designed to ensure success in achieving RCDD certification and excellence in telecommunications infrastructure design.Answer Format​ All correct answers are highlighted in bold and green, accompanied by detailed rationales referencing BICSI’s TDMM, TIA standards, and NEC codes to deepen comprehension and ensure mastery of design principles and industry standards.RCDD Exam / | Verified Actual Questions & Correct Answers | 100% Pass Guarantee | Already Graded A+

RCDD Exam Questions (1–100)

• What is the primary purpose of the BICSI RCDD certification?​

a) To certify expertise in wireless network management​

b) To validate skills in designing telecommunications distribution systems​

c) To regulate fiber optic manufacturing​

d) To oversee electrical power systems​

b) To validate skills in designing telecommunications distribution systems​

Rationale: The RCDD certification, offered by BICSI, validates expertise in the design, implementation, and management of telecommunications distribution systems, per BICSI’s TDMM.

• According to TIA-568-C, what is the maximum length for a horizontal

twisted-pair cable run?​

• 50 meters​
• 90 meters​
• 100 meters​ 1 / 3

• 150 meters​
• 90 meters​

Rationale: TIA-568-C specifies a maximum horizontal cable length of 90 meters for twisted-pair cabling (e.g., Cat6) to ensure signal integrity, excluding patch cords.

• What is the minimum fire rating for a telecommunications cable in a

plenum space per NEC?​

a) CM​

b) CMR​

c) CMP​

d) CL2​

c) CMP​

Rationale: The National Electrical Code (NEC) requires CMP (Communications Plenum) rated cables for plenum spaces due to their low-smoke and fire-resistant properties.

• What is the purpose of a telecommunications room (TR)?​

a) To store electrical equipment​

b) To house telecommunications equipment and cabling terminations​

c) To manage HVAC systems​

d) To serve as a data center​

b) To house telecommunications equipment and cabling terminations​

Rationale: Per BICSI TDMM, a TR provides a controlled environment for telecommunications equipment, cabling terminations, and connectivity.

• Which standard governs the design of data center telecommunications

infrastructure?​

a) TIA-568-C​

b) TIA-942​

c) NEC Article 645​

d) IEEE 802.3​

b) TIA-942​

Rationale: TIA-942 provides guidelines for designing telecommunications infrastructure in data centers, including cabling, pathways, and spaces.

• What is the minimum bend radius for a Category 6 cable during

installation?​

• 1x cable diameter​
• 2x cable diameter​
• 4x cable diameter​
• 6x cable diameter​
• 4x cable diameter​

Rationale: TIA-568-C specifies a minimum bend radius of 4x the cable diameter for Category 6 cables to prevent signal degradation.

• What is the primary function of a backbone cable in a structured cabling

system?​ 2 / 3

a) Connect work area outlets to telecommunications rooms​

b) Connect telecommunications rooms to equipment rooms​

c) Connect devices to wireless access points​

d) Provide power over Ethernet​b) Connect telecommunications rooms to equipment rooms​

Rationale: Backbone cables provide interconnections between telecommunications rooms, equipment rooms, and entrance facilities, per TIA-568-C.

• Which grounding standard is used for telecommunications systems?​

a) TIA-607​

b) TIA-568-C​

c) IEEE 802.3​

d) NEC Article 250​

a) TIA-607​

Rationale: TIA-607 specifies the grounding and bonding requirements for telecommunications systems to ensure safety and performance.

• What is the maximum allowable distance for a multimode fiber optic

cable in a 10GBASE-SR network?​

• 100 meters​
• 300 meters​
• 400 meters​
• 550 meters​
• 300 meters​

Rationale: IEEE 802.3 specifies a maximum distance of 300 meters for 10GBASE-SR using OM3 multimode fiber.

• What is the purpose of a firestop in telecommunications infrastructure?​

a) To enhance signal strength​

b) To prevent the spread of fire through cable penetrations​

c) To improve cable organization​

d) To reduce electromagnetic interference​

b) To prevent the spread of fire through cable penetrations​

Rationale: Firestops seal penetrations in walls and floors to prevent fire and smoke spread, per NEC and BICSI TDMM.

• What is the minimum size of a telecommunications room per TIA-569?​
• 50 sq ft​
• 100 sq ft​
• 150 sq ft​
• 200 sq ft​
• 100 sq ft​

Rationale: TIA-569 recommends a minimum of 100 square feet for a telecommunications room to accommodate equipment and cabling.

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