For driven professionals who can’t afford month-long study marathons, Cert Fast Pass delivers an accelerated route to the BICSI RCDD® credential. Our one-to-one exam-prep service compresses the entire journey into a single week—using real exam-matched questions, live design-lab coaching, and 24 × 7 mentor support. Skip the guesswork, master the blueprint, and walk away RCDD-certified in as little as seven days—all backed by our Pay-Only-After-You-Pass guarantee.

Quick-Fire Mini-Quiz: 10 Exam-Style Questions

1. Conduit Fill—Cat 6A UTP

A pathway needs to accommodate (16) Cat 6A UTP cables (OD ≈ 0.315 in). What minimum trade-size EMT conduit (40 % fill) meets TIA and NEC guidelines?
A. 1 ¼-in B. 1 ½-in C. 2-in D. 2½-in

2. Data-Center Cold-Aisle Width

For a 1,200 mm (47.2 in) rack, BICSI 002 recommends a minimum cold-aisle width of:
A. 900 mm B. 1,200 mm C. 1,500 mm D. 1,800 mm

3. Fiber Polarity—Method B

In Method B duplex polarity, transmit on port 1 at the patch panel connects to ______ at the equipment side.
A. Rx on port 1 B. Tx on port 1 C. Rx on port 2 D. Tx on port 2

4. PoE Budgeting

A switch provides eight Class 5 PoE++ ports. Max switch power budget is 600 W. How many PoE++ IP cameras (45 W draw) can be supported with 20 % headroom?
A. 8 B. 11 C. 12 D. 13

5. Pathway Bend Radius—Multi-Fiber Loose Tube

For a 24-strand loose-tube OM4 cable (OD ≈ 12 mm), the minimum long-term bend radius is:
A. 48 mm B. 96 mm C. 120 mm D. 48 cm

6. Campus Backbone—OSP Fiber Slack

BICSI recommends slack loops at maintenance holes every:
A. 10 m B. 30 m C. 50 m D. 75 m

7. Rack-Unit Utilization

A 42U cabinet houses network gear (32RU), cable management (4RU), and blanking panels (2RU). Remaining RU = ______.
A. 4 B. 6 C. 8 D. 10

8. Grounding Electrode Conductor (GEC) Size

For a telco entrance with a 400 kcmil service conductor, minimum copper GEC per NEC 250 Table is:
A. 2 AWG B. 1 AWG C. 1/0 AWG D. 2/0 AWG

9. Bonding Busbar Location

The PBB (Primary Bonding Busbar) in a data center should be placed:
A. Closest to the main service disconnect
B. In the middle of the equipment row
C. Within 8 ft of the MGN (Main Grounding Network) mesh
D. Above the cold aisle to minimize cable length

10. OSP Trenching—Separation from High-Voltage

When trenching a new fiber duct alongside a 15 kV power line, BICSI and NESC recommend a horizontal separation of at least:
A. 0.3 m B. 0.9 m C. 1.5 m D. 3.0 m

Answer Key & Mini-Rationales

1. C – 2-in EMT at 40 % fill ≈ 1.67 in², enough for 16 × 0.078 in² cables.

2. B – Cold aisles ≥ rack depth (1,200 mm) for airflow & equipment egress.

3. C – Method B swaps pairs; Tx1→Rx2, Tx2→Rx1.

4. C – 600 W × 0.8 (headroom) = 480 W ÷ 45 W ≈ 10.6 → 10; however switch only has eight ports, so 8 is max. (See PoE budget nuance.)

5. B – Long-term bend radius = 10 × OD → 10 × 12 mm = 120 mm (check label).

6. C – 50 m slack-loop spacing per BICSI ITS-OSP.

7. A – 42 – (32 + 4 + 2) = 4RU left.

8. C – Table 250.66: 400 kcmil → 1/0 AWG GEC.

9. A – Locate PBB near main service disconnect to minimise GEC length.

10. B – 0.9 m (3 ft) horizontal separation per NESC Table 354-1.

How did you score? If you nailed 8/10 or better, progress to a full 100-question mock under timed conditions.

Ready for More?

Our full RCDD prep engine includes:

• 2025-aligned dumps & timed mocks (mixed calc & design items)

• Adaptive conduit-fill calculator with automatic NEC look-ups

• Live design-lab mentoring for data-center, campus, and OSP scenarios

• Pay-Only-After-You-Pass guarantee—no tuition until BICSI emails “PASS”

See how we apply the same risk-free model to PMP in PMI-PMP Latest Exam Practice Questions & Answers—then book your RCDD roadmap call.

📲 Request a free 20-question RCDD demo pack or schedule a mentor session: https://certfastpass.net/contact/

Try smarter. Pass faster. Cert Fast Pass.