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RCDD PRACTICE TEST 2 EXAM STUDY MATERIALS QUESTION AND ANSWERS (VERIFIED A
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RCDD PRACTICE TEST 2 EXAM STUDY MATERIALS QUESTION AND ANSWERS (VERIFIED A
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ESTUDYRCDD PRACTICE TEST 2 EXAM STUDY MATERIALS
QUESTION AND ANSWERS (VERIFIED ANSWERS)
1. **Which of these cables is immune to electromagnetic interference?**
- A) Optical Fiber
- B) Balanced Twisted-Pair
- C) Coaxial
- D) Unshielded Twisted-Pair
**ANSWER:** A) Optical Fiber
2. **What term describes the transmission of signals in both directions at the same time?**
- A) Simplex
- B) Half-duplex
- C) Full duplex
- D) Bidirectional
**ANSWER:** C) Full duplex
3. **What term refers to signal interference between cable pairs?**
- A) Crosstalk
- B) Impedance
- C) Delay skew
- D) Power Loss
,ESTUDY
**ANSWER:** A) Crosstalk
4. **Series-6 and Series-11 coaxial cables have a characteristic impedance of ___ ohms.**
- A) 25
- B) 75
- C) 100
- D) 150
**ANSWER:** B) 75
5. **Balanced twisted-pair cables have a nominal characteristic impedance of ________ ohms at 100
MHz.**
- A) 25
- B) 75
- C) 100
- D) 150
**ANSWER:** C) 100
6. **Which material sets the standard for comparing the conductivity of metallic cabling?**
- A) Copper
- B) Gold
- C) Silver
- D) Aluminum
,ESTUDY
**ANSWER:** A) Copper
7. **Which optical fiber interface has an SFF design and a simplex connector that can be converted to a
duplex using a clip?**
- A) LC-style optical fiber connector
- B) ST-style optical fiber plugs
- C) SC-style optical fiber plugs
- D) MTP/MPO connector
**ANSWER:** A) LC-style optical fiber connector
8. **What are the two most popular core sizes in multimode optical fiber?**
- A) 8 μm to 11 μm
- B) 50 μm to 125 μm
- C) 62.5 μm and 50 μm
- D) 100 μm and 250 μm
**ANSWER:** C) 62.5 μm and 50 μm
9. **Which type of optical fiber has a small diameter with a core size of 8 μm to 11 μm?**
- A) OS2
- B) OM3
- C) OM4
- D) OM5
**ANSWER:** A) OS2
, ESTUDY
10. **What are the two major classifications of optical fiber?**
- A) Multimode and singlemode
- B) LED and VSCEL
- C) Inside plant (ISP) and outside plant (OSP)
- D) Backbone and horizontal
**ANSWER:** A) Multimode and singlemode
11. **What is the minimum number of telecommunications rooms required per floor?**
- A) No minimum is required
- B) 1
- C) 2
- D) 3
**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) ≈15 m (50 ft)
- B) ≈30.5 m (100 ft)
- C) ≈45.8 m (150 ft)
- D) ≈90 m (295 ft)
**ANSWER:** D) ≈90 m (295 ft)
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