803 TECHNICAL KNOWLEDGE TEST II (TKT II) – AT&T Practice
Exam 200 QUESTIONS AND CORRECT ANSWERS
This comprehensive practice exam is designed to prepare you for the AT&T Technical Knowledge
Test II (TKT II). Based on the official exam blueprint , this test consists of 100 multiple-choice
questions covering the five core categories. The actual exam allows 1 hour and 40 minutes of
testing time .
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EXAM OVERVIEW
| Category | Focus Areas |
|----------|-------------|
| Basic Electricity | AC/DC circuits, Ohm's Law, components (relays, capacitors, inductors),
reactance, power factor, electrical units |
| Basic Computer Knowledge | Hardware architecture, memory (RAM/ROM), buffers, buses,
software, networks |
| Digital Communication & Transmission | Analog/digital conversion, binary number systems, T-
carrier hierarchy, framing, serial vs. parallel, duplex modes |
| Read & Interpret Technical Information | Schematic diagrams, flowcharts, technical
instructions, circuit analysis |
| Basic Math | Algebra, fractions, exponents, scientific notation, solving for unknowns |
---
PART 1: BASIC ELECTRICITY (Questions 1-40)
,---
Question 1:
What is the unit of measurement for electrical current?
A) Volt
B) Watt
C) Ampere
D) Ohm
Correct Answer: C) Ampere
Rationale: The ampere (amp) is the unit for measuring the rate of electron flow (electrical
current). Voltage is measured in volts, power in watts, and resistance in ohms .
---
Question 2:
What is the formula for Ohm's Law?
A) I = V × R
B) V = I × R
C) R = V × I
D) V = I / R
Correct Answer: B) V = I × R
Rationale: Ohm's Law states that voltage (V) equals current (I) multiplied by resistance (R). The
formula can be rearranged to solve for any variable: I = V/R or R = V/I .
,---
Question 3:
When the frequency of the applied voltage increases, capacitive reactance:
A) Increases
B) Decreases
C) Remains the same
D) Becomes zero
Correct Answer: B) Decreases
Rationale: Capacitive reactance (Xc) is inversely proportional to frequency: Xc = 1/(2πfC). As
frequency increases, capacitive reactance decreases .
---
Question 4:
Convert 6500 ohms to kilohms (kΩ).
A) 0.65 kΩ
B) 6.5 kΩ
C) 65 kΩ
D) 650 kΩ
Correct Answer: B) 6.5 kΩ
, Rationale: 1 kΩ = 1000 ohms. Therefore, 6500 ohms ÷ 1000 = 6.5 kΩ .
---
Question 5:
Convert 33 milliamps (mA) to amps (A).
A) 0.033 A
B) 0.33 A
C) 3.3 A
D) 330 A
Correct Answer: A) 0.033 A
Rationale: 1 mA = 0.001 A. Therefore, 33 mA × 0.001 = 0.033 A .
---
Question 6:
In an AC circuit, if the power factor = 0.5, then the true power is _____ the apparent power.
A) Equal to
B) Twice
C) One-half
D) Zero
Correct Answer: C) One-half
Exam 200 QUESTIONS AND CORRECT ANSWERS
This comprehensive practice exam is designed to prepare you for the AT&T Technical Knowledge
Test II (TKT II). Based on the official exam blueprint , this test consists of 100 multiple-choice
questions covering the five core categories. The actual exam allows 1 hour and 40 minutes of
testing time .
---
EXAM OVERVIEW
| Category | Focus Areas |
|----------|-------------|
| Basic Electricity | AC/DC circuits, Ohm's Law, components (relays, capacitors, inductors),
reactance, power factor, electrical units |
| Basic Computer Knowledge | Hardware architecture, memory (RAM/ROM), buffers, buses,
software, networks |
| Digital Communication & Transmission | Analog/digital conversion, binary number systems, T-
carrier hierarchy, framing, serial vs. parallel, duplex modes |
| Read & Interpret Technical Information | Schematic diagrams, flowcharts, technical
instructions, circuit analysis |
| Basic Math | Algebra, fractions, exponents, scientific notation, solving for unknowns |
---
PART 1: BASIC ELECTRICITY (Questions 1-40)
,---
Question 1:
What is the unit of measurement for electrical current?
A) Volt
B) Watt
C) Ampere
D) Ohm
Correct Answer: C) Ampere
Rationale: The ampere (amp) is the unit for measuring the rate of electron flow (electrical
current). Voltage is measured in volts, power in watts, and resistance in ohms .
---
Question 2:
What is the formula for Ohm's Law?
A) I = V × R
B) V = I × R
C) R = V × I
D) V = I / R
Correct Answer: B) V = I × R
Rationale: Ohm's Law states that voltage (V) equals current (I) multiplied by resistance (R). The
formula can be rearranged to solve for any variable: I = V/R or R = V/I .
,---
Question 3:
When the frequency of the applied voltage increases, capacitive reactance:
A) Increases
B) Decreases
C) Remains the same
D) Becomes zero
Correct Answer: B) Decreases
Rationale: Capacitive reactance (Xc) is inversely proportional to frequency: Xc = 1/(2πfC). As
frequency increases, capacitive reactance decreases .
---
Question 4:
Convert 6500 ohms to kilohms (kΩ).
A) 0.65 kΩ
B) 6.5 kΩ
C) 65 kΩ
D) 650 kΩ
Correct Answer: B) 6.5 kΩ
, Rationale: 1 kΩ = 1000 ohms. Therefore, 6500 ohms ÷ 1000 = 6.5 kΩ .
---
Question 5:
Convert 33 milliamps (mA) to amps (A).
A) 0.033 A
B) 0.33 A
C) 3.3 A
D) 330 A
Correct Answer: A) 0.033 A
Rationale: 1 mA = 0.001 A. Therefore, 33 mA × 0.001 = 0.033 A .
---
Question 6:
In an AC circuit, if the power factor = 0.5, then the true power is _____ the apparent power.
A) Equal to
B) Twice
C) One-half
D) Zero
Correct Answer: C) One-half
