Question 1

Where backbone cabling exceeds cabling lengths for the same performance or design (for product used in horizontal cabling), there are three fundamental tests which should be considered when testing. They are:

Accepted Answer

A)  Insertion loss (attenuation), return loss, and wiremap/strand identification 
B)  Insertion loss (attenuation), return loss, and continuity 
C)  Insertion loss (attenuation), return loss, and length 
D)  Insertion loss (attenuation), continuity, and wiremap/strand identification 
E)  Continuity, wiremap/strand identification, and propagation delay/delay skew

Question 2

In a telecommunications room (TR), the MINIMUM bottom edge height recommendation for mounting plywood on the wall is ________ above AFF.

Accepted Answer

A)  51 mm (2 in) 
B)  152 mm (6 in) 
C)  200 mm (8 in) 
D)  305 mm (12 in) 
E)  410 mm (16 in)

Question 3

What does ANSI/TIA 942 recommend as the MINIMUM height for overhead cable tray above finished floor within a data center?

Accepted Answer

A)  2.14 m (7 ft) 
B)  2.44 m (8 ft) 
C)  2.75 m (9 ft) 
D)  3.05 m (10 ft) 
E)  3.36 m (11 ft)

Question 4

A building has a series of CATV outlets each with cables installed back to a telecommunications room (TR), and each telecommunications room (TR) is connected to the headend. What is this type of topology called?

Accepted Answer

A)  Star 
B)  Mesh 
C)  Bus 
D)  Series

Question 5

The recommended ratio of patch panels to horizontal cable management panels is ________ RU of patch panel to ________ rack unit (RU) of horizontal cable management panel.

Accepted Answer

A)  One; one 
B)  One; two 
C)  Two; one 
D)  Two; three

Question 6

Which wireless device should be used to support 3 computers and a printer?

Accepted Answer

A)  Bridge 
B)  Gateway 
C)  Router 
D)  Switch

Question 7

What is the International Organization for Standardization/International Electrotechnical Commission ISO/IEC class rating for American National Standards Institute/Telecommunication Industry Association (ANSI/TIA) Category 5e cable?

Accepted Answer

A)  Class B 
B)  Class C 
C)  Class D 
D)  Class E 
E)  Class F

Question 8

You are designing a horizontal pathway system where you will provide 100 mm (4 in) conduit and pull boxes. The building architectural elements will only allow for a single layer of conduits (not stacked). The main horizontal pathway system consists of five 100 mm (4 in) conduits. Large single sheath copper cables are not expected to be placed. Which of the following is the MINIMUM width pull box that is to be provided?

Accepted Answer

A)  600 mm (24 in) 
B)  900 mm (36 in) 
C)  1220 mm (48 in) 
D)  1520 mm (60 in) 
E)  1830 mm (72 in)

Question 9

What is at the "root" of a DAS (distributive antenna system)?

Accepted Answer

A)  Antenna 
B)  Receiver 
C)  Transmitter 
D)  Transceiver

Question 10

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:

Accepted Answer

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)

Question 11

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):

Accepted Answer

A)  Intermediate cross-connect (I
C)  Building distributor (B
D)  
B)  Main cross-connect (M
C)  Campus distributor (C
D)  
C)  Horizontal cross-connect (H
C)  Floor distributor (F
D)  
D)  Entrance facility (EF) 
E)  Latching connector (L
C)

Question 12

What is the MINIMUM ceiling height of a telecommunications room?

Accepted Answer

A)  2.1 m (7.0 ft) 
B)  2.3 m (7.5 ft) 
C)  2.4 m (8.0 ft) 
D)  2.6 m (8.5 ft) 
E)  2.7 m (9.0 ft)

Question 13

What is the MINIMUM vertical separation between the top rail of a railroad track and telecommunications facilities placed beneath the track?

Accepted Answer

A)  508 mm (20 in) 
B)  762 mm (30 in) 
C)  1020 mm (40 in) 
D)  1280 mm (50 in) 
E)  1525 mm (60 in)

Question 14

Generating multiple message frames containing identical data being transferred to different individual devices is called:

Accepted Answer

A)  Unicast 
B)  Replicating unicast 
C)  Multicast 
D)  Broadcast

Question 15

Which of the following is an undesirable electromagnetic effect on a device(s)?

Accepted Answer

A)  (EM
C)  
B)  Electromagnetic interference (EMI) 
C)  Radio frequency interference (RFI) 
D)  Fast transients 
E)  Electrostatic discharge (ES
D)

Question 16

Exhibit:  This diagram illustrates an example of a:

Accepted Answer

A)  Multiple one level backbone designs 
B)  Multiple hierarchical level campus backbone design 
C)  Poorly designed single level campus backbone design 
D)  Well laid out single level campus backbone design 
E)  Multi level campus design ready for an easy separation into 3 single level designs

Question 17

In the ceiling zone method of distribution, the usable floor area should be divided into zones each measuring:

Accepted Answer

A)  9.3 sq m (100 sq ft) to 23 sq m (250 sq ft) 
B)  23 sq m (250 sq ft) to 56 sq m (600 sq ft) 
C)  23 sq m (250 sq ft) to 84 sq m (904 sq ft) 
D)  56 sq m (600 sq ft) to 84 sq m (904 sq ft) 
E)  56 sq m (600 sq ft) to 100 sq m (1,100 sq ft)

Question 18

A building has six floors plus a basement. Each floor is 10,000 square feet and has approximately 50 CATV outlets respectively. There is a single hardline trunk cable installed from the basement headend passing through a directional coupler in each floor's telecommunications room (TR). Which leg of the coupler will have the LEAST signal loss?

Accepted Answer

A)  Tap 
B)  Through 
C)  Splitter 
D)  Port

Question 19

When installing underground entrances, no more than ________ 90-degree bends should be included between pulling points.

Accepted Answer

A)  One 
B)  Two 
C)  Three 
D)  Four

Question 20

A fire ________ is a contained area that is completely enclosed by fire resistant walls, floors, and ceilings.

Accepted Answer

A)  Rated system 
B)  Stop system 
C)  Wall 
D)  Zone

Exam 1: BICSI Registered Communications Distribution Designer - RCDD

Where backbone cabling exceeds cabling lengths for the same performance or design (for product used in horizontal cabling) , there are three fundamental tests which should be considered when testing. They are:

In a telecommunications room (TR) , the MINIMUM bottom edge height recommendation for mounting plywood on the wall is ________ above AFF.

What does ANSI/TIA 942 recommend as the MINIMUM height for overhead cable tray above finished floor within a data center?

A building has a series of CATV outlets each with cables installed back to a telecommunications room (TR) , and each telecommunications room (TR) is connected to the headend. What is this type of topology called?

The recommended ratio of patch panels to horizontal cable management panels is RU of patch panel to rack unit (RU) of horizontal cable management panel.

Which wireless device should be used to support 3 computers and a printer?

What is the International Organization for Standardization/International Electrotechnical Commission ISO/IEC class rating for American National Standards Institute/Telecommunication Industry Association (ANSI/TIA) Category 5e cable?

What is at the "root" of a DAS (distributive antenna system) ?

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) :