RCDD Test TDMMV14 Exam 2025
Questions and Answers 100% Pass
Which cables are immune to electromagnetic interference? - ✔✔A) Optical Fiber
What term describes signals transmission in both directions simultaneously? - ✔✔C)
Full Duplex
What refers to signal interference between cable pairs? - ✔✔A) Crosstalk
What is the characteristic impedance of Series-6 and Series-11 coaxial cables? - ✔✔B)
75 ohms
What is the nominal characteristic impedance of balanced twisted-pair cables at 100
MHz? - ✔✔C) 100 ohms
What sets the standard for comparing the conductivity of metallic cabling? - ✔✔A)
Copper
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
What are the two most popular core sizes in multimode optical fiber? - ✔✔C) 62.5
μm and 50 μm
Which type of optical fiber has a small diameter with a core of 8 μm to 11 μm? -
✔✔A) OS2
What are the two major classifications of optical fiber? - ✔✔A) Multimode and
singlemode
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, There should be a minimum of ____ telecommunications room per floor. - ✔✔B) 1
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 ___________. - ✔✔D) ≈90 m (295 ft)
What is the maximum area that a single telecommunications enclosure (TE) can
cover? - ✔✔A) ≈334 m² (3600 ft²)
Which of the following connects a telecommunications room (TR) to the work area? -
✔✔A) Horizontal cabling
What is the minimum amount of space that should be allocated for the equipment
room (ER)? - ✔✔C) ≈3 m by ≈4.9 m (10 ft by 16 ft)
The cable transitioning from the outside into the building can transition no more
than ______ inside the building. - ✔✔B) ≈15 m (50 ft)
Which of the following is an environmentally controlled centralized space for
telecommunications equipment that usually houses a main or intermediate cross-
connect? - ✔✔A) Equipment room (ER)
Which color represents horizontal cable? - ✔✔A) Blue
What distribution system provides a connection between telecommunications
spaces? - ✔✔A) Backbone distribution system
Which topology can typically be seen in a campus system where some or all of the
horizontal cross-connects/floor distributors (HCs/FDs) are connected to an
intermediate cross-connect/building distributor (IC/BD), which in turn, is
connected to the main cross-connect/campus distributor (MC/CD)? - ✔✔C)
Hierarchical star
Which layer of the OSI Reference Model is responsible for intranetwork data
transfer? - ✔✔Layer 2, Data Link Services
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
Questions and Answers 100% Pass
Which cables are immune to electromagnetic interference? - ✔✔A) Optical Fiber
What term describes signals transmission in both directions simultaneously? - ✔✔C)
Full Duplex
What refers to signal interference between cable pairs? - ✔✔A) Crosstalk
What is the characteristic impedance of Series-6 and Series-11 coaxial cables? - ✔✔B)
75 ohms
What is the nominal characteristic impedance of balanced twisted-pair cables at 100
MHz? - ✔✔C) 100 ohms
What sets the standard for comparing the conductivity of metallic cabling? - ✔✔A)
Copper
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
What are the two most popular core sizes in multimode optical fiber? - ✔✔C) 62.5
μm and 50 μm
Which type of optical fiber has a small diameter with a core of 8 μm to 11 μm? -
✔✔A) OS2
What are the two major classifications of optical fiber? - ✔✔A) Multimode and
singlemode
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, There should be a minimum of ____ telecommunications room per floor. - ✔✔B) 1
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 ___________. - ✔✔D) ≈90 m (295 ft)
What is the maximum area that a single telecommunications enclosure (TE) can
cover? - ✔✔A) ≈334 m² (3600 ft²)
Which of the following connects a telecommunications room (TR) to the work area? -
✔✔A) Horizontal cabling
What is the minimum amount of space that should be allocated for the equipment
room (ER)? - ✔✔C) ≈3 m by ≈4.9 m (10 ft by 16 ft)
The cable transitioning from the outside into the building can transition no more
than ______ inside the building. - ✔✔B) ≈15 m (50 ft)
Which of the following is an environmentally controlled centralized space for
telecommunications equipment that usually houses a main or intermediate cross-
connect? - ✔✔A) Equipment room (ER)
Which color represents horizontal cable? - ✔✔A) Blue
What distribution system provides a connection between telecommunications
spaces? - ✔✔A) Backbone distribution system
Which topology can typically be seen in a campus system where some or all of the
horizontal cross-connects/floor distributors (HCs/FDs) are connected to an
intermediate cross-connect/building distributor (IC/BD), which in turn, is
connected to the main cross-connect/campus distributor (MC/CD)? - ✔✔C)
Hierarchical star
Which layer of the OSI Reference Model is responsible for intranetwork data
transfer? - ✔✔Layer 2, Data Link Services
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
