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RCDD Test TDMMV14 | 100% Correct
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Which of these cables is considered immune to electromagnetic interference? A) Optical Fiber B) Balanced Twisted-Pair C) Coaxial - ✔✔A) Optical Fiber Reference: TDMM, 14th edition, page 2- 37 Which of the following terms describes the transmission of signals in both directions at the same time? A) Simplex B) Half-duplex C) Full duplex - ✔✔C) Full Duplex TDMM, 14th edition, page 1- 39 Which of the following terms refers to signal interference between cable pairs? A) Crosstalk B) Impedance C) Delay skew D) Power Loss - ✔✔A) Crosstalk TDMM, 14th edition, page 1- 54
Series-6 and Series-11 coaxial cables have a characteristic impedance of ___ ohms. A) 25 B) 75 C) 100 D) 150 - ✔✔B) 75 TDMM, 14th edition, page 6- 24 Balanced twisted-pair cables have a nominal characteristic impedance of ________ ohms at 100 MHz. A) 25 B) 75 C) 100 D) 150 - ✔✔C) 100 TDMM, 14th edition, page 1- 57 Which of the following sets the standard for comparing the conductivity of metallic cabling? A) Copper B) Gold C) Silver D) Aluminum - ✔✔A) Copper TDMM, 14th edition, page 1-3, Table 1.
A) Multimode and singlemode B) LED and VSCEL C) Inside plant (ISP) and outside plant (OSP) D) Backbone and horizontal - ✔✔A) Multimode and singlemode TDMM, 14th edition, page 1- 98 There should be a minimum of ____ telecommunications room per floor. A) No minimum is required B) 1 C) 2 D) 3 - ✔✔B) 1 TDMM, 14th edition, page 3- 19 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) - ✔✔D) ≈90 m (295 ft) TDMM, 14th edition, page 3- 21 What is the maximum area that a single telecommunications enclosure (TE) can cover?
A) ≈334 m² (3600 ft²) B) ≈465 m² (5000 ft²) C) ≈743 m² (8000 ft²) D) ≈929 m² (10,000 ft²) - ✔✔A) ≈334 m² (3600 ft²) TDMM, 14th edition, page 3- 27 Which of the following connects a telecommunications room (TR) to the work area? A) Horizontal cabling B) Backbone cabling C) Outside plant cabling - ✔✔A) Horizontal cabling TDMM, 14th edition, page 5- 5 What is the minimum amount of space that should be allocated for the equipment room(ER)? A) ≈1.83 m (6 ft) by ≈2.6 m (8.5 ft) B) ≈2.4 m (8 ft) by ≈2.74 m (9 ft) C) ≈3 m by ≈4.9 m (10 ft by 16 ft) D) ≈3.7 m (12 ft) and ≈4.6 m (15 ft) - ✔✔C) ≈3 m by ≈4.9 m (10 ft by 16 ft) TDMM, 14th edition, page 12- 18 The cable transitioning from the outside into the building can transition no more than ______ inside the building. A) ≈6.1 m (20 ft)
C) Outside plant distribution system - ✔✔A) Backbone distribution system TDMM, 14th edition, page 4- 1 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)? A) Star B) Ring C) Hierarchical star D) Logical ring - ✔✔C) Hierarchical star TDMM, 14th edition, page 4- 32 Which layer of the OSI Reference Model is responsible for intranetwork data transfer? A) Layer 1, Physical Services B) Layer 2, Data Link Services C) Layer 3, Network Services D) Layer 4, Transport Services - ✔✔B) Layer 2, Data Link Services TDMM, 14th edition, page 15- 5 Which layer of the OSI Reference Model is responsible for physical services? A) Layer 1, Physical Services B) Layer 2, Data Link Services C) Layer 3, Network Services
D) Layer 4, Transport Services - ✔✔A) Layer 1, Physical Services TDMM, 14th edition, page 15- 5 Which of the following covers an area generally associated with an individual workspace? A) PAN B) CAN C) MAN D) WAN - ✔✔A) PAN TDMM, 14th edition, page 15- 1 In a DAS system, which type of equipment does not require external power input such asantennas or coaxial cabling? A) Passive distribution equipment B) Backend equipment C) Headend equipment D) Master control unit - ✔✔A) Passive distribution equipment TDMM, 14th edition, page 16- 5 Which is abrupt change in direction of a wave front at the interface between two dissimilar media as the incident wave front enters the second medium? A) Reflection B) Diffraction C) Refraction
D) Perimeter security, building security, and asset security - ✔✔A) Architectural, operational, and electronic TDMM, 14th edition, page 17- 1 Which project document summarizes corrections that a contractor must make prior to accepting the work as complete? A) Punch list B) Commissioning report C) Work breakdown structure (WBS) D) Scope of Work (SoW) - ✔✔A) Punch list TDMM, 14th edition, page 21- 38 Which of the following aspects of project management involve breaking one large project into smaller projects or managing multiple small projects as one large project? A) Integration management B) Scope management C) Quality management D) Human resource management - ✔✔A) Integration management TDMM, 14th edition, page 21- 7 Which topology refers to the configuration of cabling multiple links between node sites? A) Tree and branch B) Clustered star C) Local ring
D) Mesh - ✔✔D) Mesh TDMM, 14th edition, page 4- 15 Which topology is a linear configuration of cabling that has limited application? A) Bus B) Star C) Ring D) Mesh - ✔✔A) Bus TDMM, 14th edition, page 4- 13 A backbone distribution shall have no more than ______ levels of cross connections. A) 1 B) 2 C) 3 D) 4 - ✔✔B) 2 TDMM, 14th edition, page 4- 27 Which color represents first-level backbone? A) Gray B) White C) Brown D) Blue - ✔✔B) White
A) Power over Ethernet (PoE) B) Centralized optical fiber cable C) Passive optical network (PON) - ✔✔A) Power over Ethernet (PoE) TDMM, 14th edition, page 1- 75 What frequency is associated with Category 6A balanced twisted-pair cable? A) 100 MHz B) 250 MHz C) 500 MHz D) 600 MHz - ✔✔C) 500 MHz TDMM, 14th edition, page 1-64, Table 1. What is the maximum number of connection points (connectors) that are allowed in the transmission channel? A) 1 B) 2 C) 3 D) 4 - ✔✔D) 4 TDMM, 14th edition, page 5- 8 The minimum configuration consists of of __ telecommunications outlets/connectors in the work area. A) 1 B) 2
C) 3
D) No minimum requirement - ✔✔B) 2 TDMM, 14th edition, page 5- 6 What type of physical topology is required for installing horizontal cabling? A) Star B) Ring C) Bus D) Tree - ✔✔A) Star TDMM, 14th edition, page 5- 6 Which fire rating measures the amount of time an installed assembly prevents flames from passing through the barrier? A) F rating B) L rating C) W rating D) T rating - ✔✔A) F rating TDMM, 14th edition, page 7-13, Table 7. A fire-rated pathway is categorized as which type of system? A) Non-mechanical systems B) Mechanical systems C) Final Form
TDMM, 14th edition, page 8- 20 Which subsystem aims to equalize potentials between multiple metallic surfaces? A) ac grounding electrode system B) Equipment grounding system C) Telecommunications bonding infrastructure - ✔✔C) Telecommunications bonding infrastructure TDMM, 14th edition, page 8- 12 Which term refers to connecting of bonded equipment or systems to earth? A) Grounding B) Bonding C) Dispersion D) Multiplexing - ✔✔A) Grounding TDMM, 14th edition, page 8- 1 OSP is any telecommunications infrastructure designed for installation _______ to buildings and is typically routed into the entrance facility. A) Interior B) Exterior C) Center D) Juxtapose - ✔✔B) Exterior TDMM, 14th edition, page G- 135
Which type of OSP pathway places cables directly in the ground by trenching, boring, or plowing, the earth to provide an out-of-sight service without a conduit? A) Direct-buried B) Underground C) Aerial D) Backbone - ✔✔A) Direct-buried TDMM, 14th edition, page 12- 3 Which of the following can be defined as a rule or set of rules intended to ensure safety during the installation and use of materials, components, fixtures, systems, premises, and related subjects? A) Code B) Standard C) Regulation D) Best practice - ✔✔A) Code TDMM, 14th edition, Page 21- 30 Which of the following is developed as a response to a statement of work provided by the client and establishes requirements for the performance of work to achieve the project objectives? A) Scope of Work (SoW) B) Bill of Materials (BOM) C) Telecommunications Project Plan D) Work Breakdown Structure (WBS) - ✔✔A) Scope of Work (SoW) TDMM, 14th edition, Page 21- 9
If the building is smaller than ___________, it may be served by a self-contained cabinet.≈93 m2 ( ft2). A) ≈93 m2 (1000 ft2) B) ≈465 m2 (5000 ft2) C) ≈743 m2 (8000 ft2) D) ≈929 m2 (10,000 ft2) - ✔✔A) ≈93 m2 (1000 ft2) TDMM, 14th edition, Page 3-11, Table 3. If the building is smaller than ___________, it may be served by a shallow room. A) ≈465 m2 (5000 ft2) B) ≈743 m2 (8000 ft2) C) ≈929 m2 (10,000 ft2) D) ≈1858 m2 (20,000 ft2) - ✔✔A) ≈465 m2 (5000 ft2) TDMM, 14th edition, Page 3-11, Table 3. Separate duplex or quad convenience receptacles should be placed at ___________intervals around the room. A) ≈1.5 m (5 ft) B) ≈1.83 m (6 ft) C) ≈2.6 m (8.5 ft) D) ≈3 m (10 ft) - ✔✔B) ≈1.83 m (6 ft) TDMM, 14th edition, Page 3- 6
Convenience receptacles should be located at least ________ AFF. A) ≈152 mm (6 in) B) ≈200 mm (8 in) C) ≈254 mm (10 in) D) ≈300 mm (12 in) - ✔✔A) ≈152 mm (6 in) TDMM, 14th edition, Page 3- 6 Doors for a telecommunications space shall be a minimum of __________ wide. A) ≈0.6 m (2 ft) B) ≈0.91 m (3 ft) C) ≈1.5 m (5 ft) D) ≈1.83 m (6 ft) - ✔✔B) ≈0.91 m (3 ft) TDMM, 14th edition, Page 3- 5 Provide minimum working clearance (front and rear) of _____________ from installed equipment. A) ≈1 m (3.28 ft) B) ≈1.5 m (5 ft) C) ≈1016 mm (40 in) D) ≈1220 mm (48 in) - ✔✔A) ≈1 m (3.28 ft) TDMM, 14th edition, Page 3- 3 The minimum ceiling height of a telecommunications space should be _____________ AFF.
