SCTE BTCS Actual Exam – Society of Cable
Telecommunications Engineers (SCTE) –
2026/2027 Academic Year – Verified Questions
and Answers | with complete solutions.
Section 1: Facility Infrastructure Management
(Questions 1-15)
1. What is the primary purpose of a cable tray in a TelecomCenter
facility?
A) To decorate the facility for visitor tours
B) To support, organize, and protect cables running throughout the facility
C) To store backup power supplies
D) To display marketing materials
Answer: B) To support, organize, and protect cables running
throughout the facility
Rationale: Cable trays provide structured cable management by organizing
and protecting cables. They are essential for maintaining cable paths,
preventing damage, and facilitating maintenance . Decoration, supply
storage, and marketing are not their purpose.
Source: SCTE BTCS Facilities Practice Bank, Docsity
2. During a routine facility audit, you discover that one equipment
rack lacks bonding to the telecommunications grounding system.
What is the most appropriate action?
,A) Leave it unchanged
B) Disconnect adjacent racks
C) Bond the rack according to facility grounding requirements
D) Remove all surge protection
Answer: C) Bond the rack according to facility grounding
requirements
Rationale: Proper bonding ensures personnel safety and consistent fault
current paths. All racks must be bonded to the telecommunications
grounding system per industry standards . Failure to bond creates electrical
hazards and can lead to equipment damage.
Source: SCTE BTCS Examination Questions, Docsity
3. A facility manager discovers blocked airflow beneath a raised
floor. What is the most likely operational consequence?
A) Improved equipment performance
B) Reduced cooling effectiveness and localized overheating
C) Lower electrical consumption without impact
D) Increased fire suppression efficiency
Answer: B) Reduced cooling effectiveness and localized overheating
Rationale: Obstructed airflow creates hot spots that can compromise
equipment reliability. Raised floor plenums must remain unobstructed for
proper cooling . Blocked airflow reduces cooling efficiency and can lead to
equipment overheating and failure.
Source: SCTE BTCS Examination Questions, Docsity
,4. What is the typical commercial AC power voltage supplied to a
TelecomCenter in North America?
A) 12 VDC
B) 48 VDC
C) 120/208/240 VAC
D) 380 VDC
Answer: C) 120/208/240 VAC
Rationale: North American commercial power is typically 120/208/240 VAC .
12 VDC and 48 VDC are DC voltages used for equipment, and 380 VDC is not
common in North American telecom facilities.
Source: SCTE BTCS Facilities Practice Bank, Docsity
5. What is the typical DC voltage used to power telecommunications
equipment in a TelecomCenter?
A) 12 VDC
B) 24 VDC
C) 48 VDC (typically -48 VDC)
D) 120 VDC
Answer: C) 48 VDC (typically -48 VDC)
Rationale: Telecommunications equipment typically operates on -48 VDC .
This standard negative voltage is used across the industry for
telecommunications power systems. The negative polarity helps reduce
corrosion on copper conductors.
, Source: SCTE BTCS Facilities Practice Bank, Docsity
6. What is the typical voltage of a single lead-acid battery cell in a
TelecomCenter battery string?
A) 1.2 VDC
B) 2.0 VDC
C) 12 VDC
D) 24 VDC
Answer: B) 2.0 VDC
Rationale: Individual lead-acid cells produce 2.0 VDC . 1.2 VDC is for NiCd
cells, 12 VDC is a battery block of 6 cells, and 24 VDC is a battery block of 12
cells.
Source: SCTE BTCS Facilities Practice Bank, Docsity
7. How many 2.0 VDC cells are required to create a nominal 48 VDC
battery string?
A) 12 cells
B) 18 cells
C) 24 cells
D) 30 cells
Answer: C) 24 cells
Rationale: 24 cells × 2.0 VDC = 48 VDC . 12 cells would produce 24 VDC, 18
cells would produce 36 VDC, and 30 cells would produce 60 VDC.
Telecommunications Engineers (SCTE) –
2026/2027 Academic Year – Verified Questions
and Answers | with complete solutions.
Section 1: Facility Infrastructure Management
(Questions 1-15)
1. What is the primary purpose of a cable tray in a TelecomCenter
facility?
A) To decorate the facility for visitor tours
B) To support, organize, and protect cables running throughout the facility
C) To store backup power supplies
D) To display marketing materials
Answer: B) To support, organize, and protect cables running
throughout the facility
Rationale: Cable trays provide structured cable management by organizing
and protecting cables. They are essential for maintaining cable paths,
preventing damage, and facilitating maintenance . Decoration, supply
storage, and marketing are not their purpose.
Source: SCTE BTCS Facilities Practice Bank, Docsity
2. During a routine facility audit, you discover that one equipment
rack lacks bonding to the telecommunications grounding system.
What is the most appropriate action?
,A) Leave it unchanged
B) Disconnect adjacent racks
C) Bond the rack according to facility grounding requirements
D) Remove all surge protection
Answer: C) Bond the rack according to facility grounding
requirements
Rationale: Proper bonding ensures personnel safety and consistent fault
current paths. All racks must be bonded to the telecommunications
grounding system per industry standards . Failure to bond creates electrical
hazards and can lead to equipment damage.
Source: SCTE BTCS Examination Questions, Docsity
3. A facility manager discovers blocked airflow beneath a raised
floor. What is the most likely operational consequence?
A) Improved equipment performance
B) Reduced cooling effectiveness and localized overheating
C) Lower electrical consumption without impact
D) Increased fire suppression efficiency
Answer: B) Reduced cooling effectiveness and localized overheating
Rationale: Obstructed airflow creates hot spots that can compromise
equipment reliability. Raised floor plenums must remain unobstructed for
proper cooling . Blocked airflow reduces cooling efficiency and can lead to
equipment overheating and failure.
Source: SCTE BTCS Examination Questions, Docsity
,4. What is the typical commercial AC power voltage supplied to a
TelecomCenter in North America?
A) 12 VDC
B) 48 VDC
C) 120/208/240 VAC
D) 380 VDC
Answer: C) 120/208/240 VAC
Rationale: North American commercial power is typically 120/208/240 VAC .
12 VDC and 48 VDC are DC voltages used for equipment, and 380 VDC is not
common in North American telecom facilities.
Source: SCTE BTCS Facilities Practice Bank, Docsity
5. What is the typical DC voltage used to power telecommunications
equipment in a TelecomCenter?
A) 12 VDC
B) 24 VDC
C) 48 VDC (typically -48 VDC)
D) 120 VDC
Answer: C) 48 VDC (typically -48 VDC)
Rationale: Telecommunications equipment typically operates on -48 VDC .
This standard negative voltage is used across the industry for
telecommunications power systems. The negative polarity helps reduce
corrosion on copper conductors.
, Source: SCTE BTCS Facilities Practice Bank, Docsity
6. What is the typical voltage of a single lead-acid battery cell in a
TelecomCenter battery string?
A) 1.2 VDC
B) 2.0 VDC
C) 12 VDC
D) 24 VDC
Answer: B) 2.0 VDC
Rationale: Individual lead-acid cells produce 2.0 VDC . 1.2 VDC is for NiCd
cells, 12 VDC is a battery block of 6 cells, and 24 VDC is a battery block of 12
cells.
Source: SCTE BTCS Facilities Practice Bank, Docsity
7. How many 2.0 VDC cells are required to create a nominal 48 VDC
battery string?
A) 12 cells
B) 18 cells
C) 24 cells
D) 30 cells
Answer: C) 24 cells
Rationale: 24 cells × 2.0 VDC = 48 VDC . 12 cells would produce 24 VDC, 18
cells would produce 36 VDC, and 30 cells would produce 60 VDC.
