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RCDD TEST TDMMV14 EXAM STUDY MATERIALS QUESTION AND ANSWERS (VERIFIED ANSWERS)
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RCDD TEST TDMMV14 EXAM STUDY MATERIALS QUESTION AND ANSWERS (VERIFIED ANSWERS)
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ESTUDYRCDD TEST TDMMV14 EXAM STUDY MATERIALS
QUESTION AND ANSWERS (VERIFIED ANSWERS)
1. **Which cables are immune to electromagnetic interference?**
- A) Optical Fiber
- B) Coaxial
- C) Twisted Pair
- D) Shielded Twisted Pair
**ANSWER:** A) Optical Fiber
2. **What term describes signals transmission in both directions simultaneously?**
- A) Half Duplex
- B) Simplex
- C) Full Duplex
- D) Bidirectional
**ANSWER:** C) Full Duplex
3. **What refers to signal interference between cable pairs?**
- A) Crosstalk
- B) Echo
- C) Jitter
- D) Attenuation
,ESTUDY
**ANSWER:** A) Crosstalk
4. **What is the characteristic impedance of Series-6 and Series-11 coaxial cables?**
- A) 50 ohms
- B) 75 ohms
- C) 100 ohms
- D) 150 ohms
**ANSWER:** B) 75 ohms
5. **What is the nominal characteristic impedance of balanced twisted-pair cables at 100 MHz?**
- A) 50 ohms
- B) 60 ohms
- C) 100 ohms
- D) 150 ohms
**ANSWER:** C) 100 ohms
6. **What sets the standard for comparing the conductivity of metallic cabling?**
- A) Copper
- B) Aluminum
- C) Silver
- D) Gold
,ESTUDY
**ANSWER:** A) Copper
7. **Which optical fiber interface has an SFF design and a simplex connector that can be converted to a
duplex?**
- A) LC-style optical fiber connector
- B) SC-style optical fiber connector
- C) ST-style optical fiber connector
- D) MTP-style optical fiber connector
**ANSWER:** A) LC-style optical fiber connector
8. **What are the two most popular core sizes in multimode optical fiber?**
- A) 50 μm and 25 μm
- B) 62.5 μm and 25 μm
- C) 62.5 μm and 50 μm
- D) 100 μm and 75 μm
**ANSWER:** C) 62.5 μm and 50 μm
9. **Which type of optical fiber has a small diameter with a core of 8 μm to 11 μm?**
- A) OS2
- B) OM3
- C) OM4
- D) OM1
**ANSWER:** A) OS2
, ESTUDY
10. **What are the two major classifications of optical fiber?**
- A) Multimode and singlemode
- B) Balanced and unbalanced
- C) Shielded and unshielded
- D) Active and passive
**ANSWER:** A) Multimode and singlemode
11. **There should be a minimum of ____ telecommunications room per floor.**
- A) 2
- B) 1
- C) 3
- D) 4
**ANSWER:** B) 1
12. **Multiple telecommunications rooms (TRs) are required if the cable length between the horizontal
cross-connect/floor distributor (HC/FD) and the telecommunications outlet location, including slack,
exceeds ___________.**
- A) ≈50 m (164 ft)
- B) ≈75 m (246 ft)
- C) ≈90 m (295 ft)
- D) ≈120 m (394 ft)
**ANSWER:** C) ≈90 m (295 ft)
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