DCI Copper Installation 4

Question 1

What does a 'split pair' wiring error show on a cable tester wire map?

Accepted Answer

Correct wire map but failed NEXT test

Answer

A split pair shows a correct wire map continuity but catastrophically fails NEXT because the pair twist is broken by mixing conductors from different pairs.

Question 2

When using a 110-type punchdown block, what type of punchdown tool blade is required?

Accepted Answer

110-type blade

Answer

A 110-type blade is specifically designed for 110 connecting blocks and cuts the conductor flush while seating it into the IDC contact.

Question 3

What is the recommended maximum gap between cable support fasteners (J-hooks or staples) on a horizontal cable run?

Accepted Answer

Every 4 to 5 feet

Answer

BICSI and TIA guidelines recommend supporting horizontal cable every 4 to 5 feet (1.2–1.5 meters) to prevent sagging and cable damage.

Question 4

What is 'DC loop resistance' in a copper cable?

Accepted Answer

The total resistance of both conductors in a pair measured as a loop

Answer

DC loop resistance is measured by connecting the two conductors of a pair at one end and measuring the total resistance of the complete loop at the other end.

Question 5

Which standard defines the telecommunications pathways and spaces for commercial buildings?

Accepted Answer

ANSI/TIA-569

Answer

ANSI/TIA-569 (Commercial Building Standard for Telecommunications Pathways and Spaces) covers conduits, cable trays, and equipment room design.

(DCI) Data Cabling Installer Practice Test

(DCI) Data Cabling Installer Practice Test

DCI Copper Installation 4