RCDD-002 実際試験問題と解答 - 模擬練習 - 受験自信を増やす

Question No : 1
The decision regarding the number of optical fibers to install (fiber strand count) in a backbone depends largely on all of the following EXCEPT:

A.Level of multiplexing
B.Intended end-user applications
C.Physical topology of the cabling system
D.Distance between telecommunications room (TR)
E.Cabling system configuration

正解:

Question No : 2
You have been asked to project manage a fiber cable backbone installation. In the course of the installation, you notice the fiber cable with a 25 mm (1 in) outside diameter is being installed into a small TR, and the cable is being installed into a tight corner.
Based on your knowledge of minimum bend radius requirements for fiber cable, you must ensure that the MINIMUM cable bend radius of _______________ is provided when the cable installation is completed.

A.254 mm (10 in)
B.305 mm (12 in)
C.381 mm (15 in)
D.457 mm (18 in)
E.610 mm (24 in)

正解:

Question No : 3
You have been asked to design a backbone cable connecting two large campus buildings. Your pathways will include using conduits, maintenance holes, and one section of 100 m (328 ft) of direct buried optical fiber cable.
Your choice of fiber optic cable type recommendation is a:

A.Distribution cable
B.Loose tube cable
C.Loose tube cable containing a water blocking compound
D.Distribution cable with an armored coating
E.Distribution cable with a water blocking compound

正解:

Question No : 4
One advantage of using preconnectorized jumpers and cables is:

A.They are less costly than field connectorized connectors
B.The cables are more rugged and can handle higher pull tensions
C.They come with factory certified quality of terminations
D.They require additional engineering time thereby providing a higher degree of reliability
E.The technician does not need to be concerned with the water blocking components of the cable

正解:

Question No : 5
Multimode optical fiber is generally used for campus or building applications due to the ability to use cost effective:

A.Connectors
B.Cable
C.Installation methods
D.Transceivers
E.Designs

正解:

Question No : 6
In reviewing your client's network needs for today and 5 years into the future, you note their current specs call for a 1Gb/s network within a campus environment, with little or no possibility of any increased bandwidth demands until they move to their planned future site. The building is not large, and the cable lengths will not exceed 550 m (1804 ft).
Your recommendation for the fiber to be installed in the backbone is:

A.OM1 fiber
B.OM2 fiber
C.OM3 fiber
D.OM1, OM2, or OM3 will work
E.OS1 equipped with attenuators

正解:

Question No : 7
The RECOMMENDED balanced twisted-pair cable for building backbone cabling consists of ________ round solid copper conductors with a nominal characteristic of 100 ohm.

A.20-24 AWG
B.22-26 AWG
C.23-24 AWG
D.24-22 AWG
E.26-20 AWG

正解:

Question No : 8
When designing a campus distribution system involving small buildings with only one horizontal cross-connect (HC) [Floor distributor (FD)] per building, you can eliminate the need for a(n):

A.Intermediate cross-connect (IC) Building distributor (BD)
B.Main cross-connect (MC) Campus distributor (CD)
C.Horizontal cross-connect (HC) Floor distributor (FD)
D.Entrance facility (EF)
E.Latching connector (LC)

正解:

Question No : 9
You are given a choice of methods of routing backbone cabling vertically through a building.
The one option that you do NOT want to use is:

A.Open shafts
B.Metallic raceways
C.Slots
D.Sleeves
E.Elevator shafts

正解:

Question No : 10
When designing a connection to an outlying building you decide to choose a physical ring.
Your primary reason for considering a physical ring is:

A.You have easy access to an existing pathway
B.The design is quick and easy to install
C.The campus suits this design
D.The design is cost effective
E.The physical ring provides a redundant cable path for disaster recovery

正解:

Question No : 11
You are reviewing a building backbone design with a vertically aligned telecommunications room (TR). In the spec you note in a footnote with details that the slots at one end of the telecommunications room (TR) must be flush with the floor and the sleeves provide at the end of the telecommunications room (TR) must also be flush.
In your meeting with the electrical engineering firm that has provided the spec, you make the comment that according to best practices, the MINIMUM that slots and sleeves must extend above the finished floor are:

A.25 mm (1 in) for slots and 51 mm (2 in)
B.25 mm (1 in) for slots and 25 mm (1 in)
C.51 mm (2 in) for slots and 25 mm (1 in)
D.51 mm (2 in) for slots and 51 mm (2 in)
E.64 mm (2 1/2 in) for slots and 64 mm (2 1/2 in)

正解:

Question No : 12
When designing a fiber backbone using cable with an armored sheath, a major consideration that you must address is:

A.Type of metal used in the sheath
B.Strength of the armored sheath
C.Amount of aluminum contained in the armored sheath
D.Amount of steel in the sheath as rust is an issue
E.Bonding and grounding of the armored sheath

正解:

Question No : 13
In the customer's environment, an ITS designer should avoid the need for optical fiber field splicing by:

A.Installing oversized inner duct
B.Using oversized cable trays
C.Using pre-connectorized cables
D.Installing a continuous length of cable
E.Using multiple pull boxes

正解:

Question No : 14
Exhibit:

This diagram illustrates a ______________campus backbone design.

A.Hierarchical star
B.Ring topology
C.Bus topology
D.Inverted star
E.Collapsed ring

正解:

Question No : 15
An installation crew is pulling an optical fiber cable into a riser. The cable has an outside diameter of 25 mm (1 in). As the cable is being pulled off the reel and through a pulley into the riser, you must verify that the minimum bend radius for the cable being pulled is observed.
The pulley must be sized at a MINIMUM of:

A.254 mm (10 in)
B.381 mm (15 in)
C.508 mm (20 in)
D.635 mm (25 in)
E.762 mm (30 in)

正解:

BICSI RCDD-002 問題練習