MOSTLY TESTED RELEVANT COVERAGE AREAS
1. Basic Electricity and Circuit Theory: Ohm's Law, series/parallel circuits, AC/DC
fundamentals, electrical units, power calculations, capacitance, inductance, and
reactance . 2 6 11
2. Basic Computer Knowledge: Hardware components, operating systems, system
tools, storage devices, and network neighborhood concepts . 13
3. Digital Communication and Transmission: Binary systems, numbering conversions,
digital/analog conversion, T-carrier hierarchy, SONET/SDH, fiber optics, and wireless
communication . 1
4. Schematics and Technical Diagrams: Reading wiring diagrams, block diagrams,
symbols, flowcharts, and logic gates . 13
5. Troubleshooting and Diagnostics: Systematic troubleshooting approaches, signal
measurement, loop tests, TDR/OTDR usage, multimeter operation, and fault isolation
. 1 3
6. Telecommunications Fundamentals: PSTN, VoIP, dial tone troubleshooting, POTS,
and telephony signaling . 1 3
, 7. Networking Concepts: OSI and TCP/IP models, IP addressing, subnetting, routing,
DHCP, DNS, NAT, routers, and switches . 1 4
8. Wireless and Broadband Technologies: 4G, 5G, LTE, Wi-Fi standards, DSL, fiber
(GPON), modems, and router configuration . 1 3
9. Network Security: Firewalls, VPNs, encryption, threat mitigation, and security
protocols . 1
10. Technician Safety and Best Practices: OSHA regulations, PPE, ladder safety,
electrical hazards, confined spaces, and proper lifting techniques . 3
AT&T TKT II EXAM LATEST UPDATE THIS YEAR
250 MULTIPLE-CHOICE QUESTIONS WITH ANSWERS AND
RATIONALES
1. A technician is calculating the resistance in a circuit that has a voltage of 30 volts
and a current of 2 amperes flowing through it. What is the resistance?
☐ 15 Ω
☐ 30 Ω
, ☐ 7.5 Ω
☐ 32 Ω
Rationale: Using Ohm's Law (R = V/I), the resistance equals 30 volts divided by 2
amperes, which equals 15 ohms . 5
2. Which of the following best describes the primary function of a rectifier in an
electronic power supply circuit?
☐ To change direct current into alternating current
☐ To change alternating current into direct current
☐ To increase the voltage amplitude of a signal
☐ To decrease the overall resistance in a circuit
Rationale: A rectifier converts AC, which periodically reverses direction, into DC,
which flows in only one direction . 14
3. In the binary number system, what is the decimal equivalent of the binary number
1101?
☐ 12
☐ 13
☐ 14
☐ 15
, Rationale: 1101 in binary equals (1 × 8) + (1 × 4) + (0 × 2) + (1 × 1) = 8 + 4 + 0 + 1 = 13
. 14
4. A technician is working near electrical power lines and must maintain a safe distance
to prevent electrocution. Which safety practice is most important?
☐ Work quickly to minimize exposure time
☐ Maintain a safe distance and use non-conductive tools
☐ Wear rubber gloves and touch the lines briefly
☐ Ignore the lines if they appear insulated
Rationale: Maintaining safe distances and using non-conductive tools prevents
electrical contact and electrocution . 3
5. What is the total opposition to current flow in an alternating current circuit called?
☐ Resistance
☐ Conductance
☐ Impedance
☐ Reactance
Rationale: The impedance of an AC circuit is the total opposition to current flow,
encompassing both resistance and reactance . 2
1. Basic Electricity and Circuit Theory: Ohm's Law, series/parallel circuits, AC/DC
fundamentals, electrical units, power calculations, capacitance, inductance, and
reactance . 2 6 11
2. Basic Computer Knowledge: Hardware components, operating systems, system
tools, storage devices, and network neighborhood concepts . 13
3. Digital Communication and Transmission: Binary systems, numbering conversions,
digital/analog conversion, T-carrier hierarchy, SONET/SDH, fiber optics, and wireless
communication . 1
4. Schematics and Technical Diagrams: Reading wiring diagrams, block diagrams,
symbols, flowcharts, and logic gates . 13
5. Troubleshooting and Diagnostics: Systematic troubleshooting approaches, signal
measurement, loop tests, TDR/OTDR usage, multimeter operation, and fault isolation
. 1 3
6. Telecommunications Fundamentals: PSTN, VoIP, dial tone troubleshooting, POTS,
and telephony signaling . 1 3
, 7. Networking Concepts: OSI and TCP/IP models, IP addressing, subnetting, routing,
DHCP, DNS, NAT, routers, and switches . 1 4
8. Wireless and Broadband Technologies: 4G, 5G, LTE, Wi-Fi standards, DSL, fiber
(GPON), modems, and router configuration . 1 3
9. Network Security: Firewalls, VPNs, encryption, threat mitigation, and security
protocols . 1
10. Technician Safety and Best Practices: OSHA regulations, PPE, ladder safety,
electrical hazards, confined spaces, and proper lifting techniques . 3
AT&T TKT II EXAM LATEST UPDATE THIS YEAR
250 MULTIPLE-CHOICE QUESTIONS WITH ANSWERS AND
RATIONALES
1. A technician is calculating the resistance in a circuit that has a voltage of 30 volts
and a current of 2 amperes flowing through it. What is the resistance?
☐ 15 Ω
☐ 30 Ω
, ☐ 7.5 Ω
☐ 32 Ω
Rationale: Using Ohm's Law (R = V/I), the resistance equals 30 volts divided by 2
amperes, which equals 15 ohms . 5
2. Which of the following best describes the primary function of a rectifier in an
electronic power supply circuit?
☐ To change direct current into alternating current
☐ To change alternating current into direct current
☐ To increase the voltage amplitude of a signal
☐ To decrease the overall resistance in a circuit
Rationale: A rectifier converts AC, which periodically reverses direction, into DC,
which flows in only one direction . 14
3. In the binary number system, what is the decimal equivalent of the binary number
1101?
☐ 12
☐ 13
☐ 14
☐ 15
, Rationale: 1101 in binary equals (1 × 8) + (1 × 4) + (0 × 2) + (1 × 1) = 8 + 4 + 0 + 1 = 13
. 14
4. A technician is working near electrical power lines and must maintain a safe distance
to prevent electrocution. Which safety practice is most important?
☐ Work quickly to minimize exposure time
☐ Maintain a safe distance and use non-conductive tools
☐ Wear rubber gloves and touch the lines briefly
☐ Ignore the lines if they appear insulated
Rationale: Maintaining safe distances and using non-conductive tools prevents
electrical contact and electrocution . 3
5. What is the total opposition to current flow in an alternating current circuit called?
☐ Resistance
☐ Conductance
☐ Impedance
☐ Reactance
Rationale: The impedance of an AC circuit is the total opposition to current flow,
encompassing both resistance and reactance . 2
