Question 1

Exhibit: The diagram below is a typical configuration for:

Accepted Answer

The answer of Exhibit: The diagram below is a typical...

Question 2

You have been asked to test and troubleshoot an installed base of cabling that is believed to be causing network problems. You are finding that there are high levels of return loss upon initial testing. What testing will best determine the reasons for these failures?

Accepted Answer

A time domain reflectometer (TDR) is the best choice in this situation. TDR can accurately locate and diagnose faults such as high levels of return loss by sending a signal down the cable and analyzing the reflections that come back. This allows the tester to pinpoint the exact location of the fault and determine the appropriate corrective action. Power meters and continuity testing are not designed to diagnose return loss, and Level II testing may not be necessary at this stage.

Question 3

When balanced twisted-pair copper cabling, return loss is a measurement of the:

Accepted Answer

Return loss is a measurement of the reflection of signal power resulting from the insertion of a device in a transmission line, expressed in decibels (dB).

Question 4

Select the appropriate task to complete section 2.2 of the work breakdown structure (WBS) below: 2 Technician 2.1 Install cabling 2.2 __________ 2.3 Activate wireless

Accepted Answer

Since the previous task was to install cabling, the appropriate task to complete section 2.2 of the WBS would be to install the access point. This would enable wireless connectivity once activated in task 2.3. Cleaning the work area and installing pathway for cabling are not related to setting up the wireless network. Confirming wireless coverage would be done after activation in task 2.3.

Question 5

Select the appropriate task to complete the section 2.2 of the work breakdown structure below: 2. Technician 2.1 Install rack 2.2 _________ 2.3 Place fiber 2.4 Terminate fiber 2.5 Test fiber

Accepted Answer

The appropriate task to complete section 2.2 of the work breakdown structure is to install connector housing. This task follows the installation of the rack and must be done before placing and terminating the fiber.

Question 6

You are preparing to test newly installed open office cabling. Within the open office cabling, there are multiple consolidation points (CP) that were installed while waiting for furniture. How do you proceed with permanent link testing?

Accepted Answer

Permanent link testing should be done after the open office cabling is completed to ensure that the entire link, including the CP and workstation outlet, is tested as a whole.

Question 7

What is the worst case acceptance value for attenuation when testing 2000 m (6562 ft) of 50/125 multimode fiber at a wavelength of 1300 nm when the fiber has 2 connector pairs and 3 splices?

Accepted Answer

The attenuation values for connectors and splices are:

- Connector pair: 0.75 dB (0.15 dB x 2)
- Splice: 0.30 dB x 3 = 0.90 dB

The worst case attenuation value calculation is as follows:

- Attenuation of the fiber: 3.5 dB/Km x 2 Km = 7 dB
- Attenuation for connectors: 0.75 dB x 2 = 1.5 dB
- Attenuation for splices: 0.9 dB x 3 = 2.7 dB
- Total attenuation: 7 dB + 1.5 dB + 2.7 dB = 11.2 dB
- Attenuation per km: 11.2 dB / 2 km = 5.6 dB/km

The worst case acceptance value for attenuation can be calculated by multiplying the attenuation per km with the length of the fiber and adding the attenuation for connectors and splices. Therefore, the worst case acceptance value for attenuation is:

- Attenuation: 5.6 dB/km x 2 km + 1.5 dB + 2.7 dB = 5.4 dB

Therefore, the best choice is C, with a worst-case acceptance value for attenuation of 5.4 dB.

Question 8

What is the PERT estimate of time for cable placement on a given job? - Optimistic time is 100 hours - Most likely time is 125 hours - Pessimistic time is 210 hours

Accepted Answer

The PERT estimate is calculated using the formula: (Optimistic + 4 * Most Likely + Pessimistic) / 6. Substituting the given values: (100 + 4*125 + 210) / 6 = 135 hours.

Question 9

Which of the following does NOT describe one of the four main types of specifications?

Accepted Answer

The four main types of specifications are: standard specifications (A), prescriptive specifications (B), proprietary specifications (C), and performance specifications (D). Listing maximum acceptable performance (E) does not describe any of these types.

Question 10

What type of estimate is based on the cost of performing similar work in the past, adjusted for current job conditions?

Accepted Answer

Analogous estimating is based on historical information from similar projects and adjusted for current job conditions.

Question 11

Which is NOT true about conformance quality?

Accepted Answer

Conformance quality is about meeting specified standards and requirements, not directly about evaluating customer satisfaction.

Question 12

At the end of the second week of a project, the earned value (EV) of work is $8000 USd and the planned value (PV) of work is $7000 USd. What is true about the project?

Accepted Answer

The EV is greater than the PV, indicating that more work than planned has been completed at this point in the project. Therefore, the project is ahead of schedule.

Question 13

Color codes for cross-connections fields have been used for many years. Which color is used to identify horizontal cable?

Accepted Answer

Blue is the color used to identify horizontal cable in cross-connections fields.

Question 14

All of the following are considered market or regional conditions that can impact construction costs EXCEPT:

Accepted Answer

Displacement and relocation are not typically considered market or regional conditions impacting construction costs; they are more related to project-specific issues.

Question 15

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

The answer of Where backbone cabling exceeds cabling lengths for...

Question 16

When developing a safety plan, consider all of the following EXCEPT:

Accepted Answer

All aspects related to safety should be addressed in the safety plan, regardless of the scope of the ITS designer's responsibilities.

Question 17

A work breakdown structure is:

Accepted Answer

The answer of A work breakdown structure is:
...

Question 18

What is the PERT estimate (in hours) for project design where: - Optimistic time is 40 hours - Most likely time is 50 hours - Pessimistic time is 60 hours

Accepted Answer

The PERT estimate is calculated using the formula: (Optimistic + 4 * Most Likely + Pessimistic) / 6. Plugging in the values: (40 + 4*50 + 60) / 6 = 50 hours.

Question 19

Premises optical fiber links should be tested:

Accepted Answer

Premises optical fiber links should be tested bi-directionally at both corresponding wavelengths to ensure the accurate measurement of fiber loss and to detect any issues with the fiber connectors and splices at both ends of the link. Testing in only one direction may not reveal issues with the return path and can result in inaccurate measurements.

Question 20

A scope of work should contain all of the following EXCEPT:

Accepted Answer

A scope of work document typically includes the project objective, project schedule, assumptions, and customer needs. However, it does not include a request for purchase as this is a separate document used for the procurement process.

Exam 1: BICSI Registered Communications Distribution Designer - RCDD