ATT Exam – Assessment of Trainee Technicians (ATT)
Technical Assessment – 2026/2027 Edition – Verified
Questions and Answers
CONTENT AREA OVERVIEW
Content Area Questions Key Topics Weight
Technical Troubleshooting & OSI Model, Signal
1-13 25%
System Diagnostics Testing, Logs
Equipment Installation & Fiber, Coax, Rack
14-23 20%
Configuration Mounts, IP
Safety Protocols, Compliance & OSHA, PPE, Voltage,
24-33 20%
Risk Management Hazards
Tools, Instruments & Preventive OTDR, Multimeter,
34-43 20%
Maintenance Spectrum Analyzers
Customer Service,
Job Closeout, Escalation,
Communication & 44-50 15%
Metrics
Documentation
SECTION 1: TECHNICAL TROUBLESHOOTING & SYSTEM
DIAGNOSTICS (Questions 1–13)Question 1
,A technician is troubleshooting a network connectivity issue. The user reports that
they can access local resources but cannot reach the internet. Which layer of the
OSI model is MOST likely the source of the problem?
A) Physical Layer
B) Data Link Layer
C) Network Layer
D) Application Layer
Correct Answer: C
Rationale: The ability to access local resources but not the internet suggests a Network
Layer (Layer 3) issue. The problem likely involves routing, default gateway, or IP
configuration. The Physical and Data Link layers would typically affect all connectivity,
while Application Layer issues would affect specific applications.
Question 2
A technician is troubleshooting intermittent signal loss on a coaxial cable run.
Which of the following is the BEST tool to identify the location of the fault?
A) Multimeter
B) Time Domain Reflectometer (TDR)
C) Spectrum Analyzer
D) Tone Generator
Correct Answer: B
Rationale: A Time Domain Reflectometer (TDR) sends a pulse down the cable and
measures the time it takes for reflections to return, accurately determining the distance
to faults such as opens, shorts, or splices. A multimeter measures voltage/continuity, a
spectrum analyzer measures frequency, and a tone generator traces individual wires.
Question 3
, A technician is troubleshooting a fiber optic link with high attenuation. Which of
the following is the MOST likely cause?
A) Excessive bend radius
B) EMI interference
C) Incorrect IP configuration
D) Loose power connection
Correct Answer: A
Rationale: Excessive bend radius (bending the fiber too tightly) causes micro-bends
that increase attenuation and signal loss in fiber optics. EMI does not affect fiber, IP
configuration is network-layer, and power issues are electrical.
Question 4
A technician receives a trouble ticket for a customer with slow internet speeds.
Which of the following should be the FIRST step in troubleshooting?
A) Replace the customer's modem
B) Run a speed test from the customer's location
C) Escalate the ticket to the network operations center
D) Check the customer's billing status
Correct Answer: B
Rationale: Running a speed test from the customer's location is the logical first step to
quantify the problem, establish a baseline, and determine if the issue is within the
customer's premises or the provider's network.
Question 5
A technician is troubleshooting a device that will not power on. Which of the
following is the MOST appropriate first step?
Technical Assessment – 2026/2027 Edition – Verified
Questions and Answers
CONTENT AREA OVERVIEW
Content Area Questions Key Topics Weight
Technical Troubleshooting & OSI Model, Signal
1-13 25%
System Diagnostics Testing, Logs
Equipment Installation & Fiber, Coax, Rack
14-23 20%
Configuration Mounts, IP
Safety Protocols, Compliance & OSHA, PPE, Voltage,
24-33 20%
Risk Management Hazards
Tools, Instruments & Preventive OTDR, Multimeter,
34-43 20%
Maintenance Spectrum Analyzers
Customer Service,
Job Closeout, Escalation,
Communication & 44-50 15%
Metrics
Documentation
SECTION 1: TECHNICAL TROUBLESHOOTING & SYSTEM
DIAGNOSTICS (Questions 1–13)Question 1
,A technician is troubleshooting a network connectivity issue. The user reports that
they can access local resources but cannot reach the internet. Which layer of the
OSI model is MOST likely the source of the problem?
A) Physical Layer
B) Data Link Layer
C) Network Layer
D) Application Layer
Correct Answer: C
Rationale: The ability to access local resources but not the internet suggests a Network
Layer (Layer 3) issue. The problem likely involves routing, default gateway, or IP
configuration. The Physical and Data Link layers would typically affect all connectivity,
while Application Layer issues would affect specific applications.
Question 2
A technician is troubleshooting intermittent signal loss on a coaxial cable run.
Which of the following is the BEST tool to identify the location of the fault?
A) Multimeter
B) Time Domain Reflectometer (TDR)
C) Spectrum Analyzer
D) Tone Generator
Correct Answer: B
Rationale: A Time Domain Reflectometer (TDR) sends a pulse down the cable and
measures the time it takes for reflections to return, accurately determining the distance
to faults such as opens, shorts, or splices. A multimeter measures voltage/continuity, a
spectrum analyzer measures frequency, and a tone generator traces individual wires.
Question 3
, A technician is troubleshooting a fiber optic link with high attenuation. Which of
the following is the MOST likely cause?
A) Excessive bend radius
B) EMI interference
C) Incorrect IP configuration
D) Loose power connection
Correct Answer: A
Rationale: Excessive bend radius (bending the fiber too tightly) causes micro-bends
that increase attenuation and signal loss in fiber optics. EMI does not affect fiber, IP
configuration is network-layer, and power issues are electrical.
Question 4
A technician receives a trouble ticket for a customer with slow internet speeds.
Which of the following should be the FIRST step in troubleshooting?
A) Replace the customer's modem
B) Run a speed test from the customer's location
C) Escalate the ticket to the network operations center
D) Check the customer's billing status
Correct Answer: B
Rationale: Running a speed test from the customer's location is the logical first step to
quantify the problem, establish a baseline, and determine if the issue is within the
customer's premises or the provider's network.
Question 5
A technician is troubleshooting a device that will not power on. Which of the
following is the MOST appropriate first step?
