ATT Test
ATT Test 9 Actual Exam Complete Questions and
Correct Detailed Answers (Verified Answers) Already
Graded A+2025
What does demultiplexing mean? -Correct Answer ✔Separating data from a single line
to different outputs
What was a main component of original computers? -Correct Answer ✔Vacuum tubes
What are the 3 categories of computers? -Correct Answer ✔Macro, mini, micro
What are the main components of a microprocessor? -Correct Answer ✔Input, control,
memory, ALU, output
What is the function of a bus? -Correct Answer ✔To provide a path or info or data
groups
What is the purpose of a general-purpose register? -Correct Answer ✔Temporary
storage
What is the purpose of a flag register? -Correct Answer ✔Indicate the status of the ALU
What information does a program counter contain? -Correct Answer ✔address of next
instruction
What are the basic sections of a computer? -Correct Answer ✔control, input, output
What is static RAM made of? -Correct Answer ✔flip flops
What is dynamic RAM made of? -Correct Answer ✔Capacitors
How does an FTC receiver affect gain? -Correct Answer ✔It has no effect
Which transmission line allows the least velocity? -Correct Answer ✔twisted pair
What is least likely to be used in fiber optics? -Correct Answer ✔photo cell
An optical fiber whose core is made of several concentric layers of materials is called
what? -Correct Answer ✔Multimode graded index optical fiber
1|Page
, ATT Test
An optical fiber with a small numeric aperature requires what? -Correct Answer ✔An
optical source capable of projecting a controlled narrow beam
What component should be chosen for fastest response time and narrowest bandwidth?
-Correct Answer ✔laser
How many indicator dots should be visible on the polishing fixture to be used correctly?
-Correct Answer ✔4
2 objects at the same range must be separated by how many beam widths in order to
be distinguished by a RADAR system? -Correct Answer ✔At least 1
What is used to make the filter from 1.5 mm or more flush with the polishing texture? -
Correct Answer ✔600 grit paper
What is an operating system? (hardware/ software?) -Correct Answer ✔software
What is the main program of an operating system? -Correct Answer ✔kernel
Which system case form factor has the best cooling? -Correct Answer ✔full tower
What is the primary disadvantage of the full tower case? -Correct Answer ✔Too big to fit
under a desk
What is the hold time of a power supply described? -Correct Answer ✔The length of
time that the power supply will keep producing its output after loosing its input
What is the function of a chipset? -Correct Answer ✔Provide interface between CPU
and the reset system
What are the 2 working parts of the CPU? -Correct Answer ✔EU and BIU
What is a characteristic of RISC instructions -Correct Answer ✔For a given RISC CPU,
the instructions are all the same length
Which is found in the BIOS? -Correct Answer ✔device drivers
What is the purpose of a device driver? -Correct Answer ✔To tell the system how to
operate a peripheral
What is the purpose of a local bus? -Correct Answer ✔Connects peripherals to the
processor bus
What is the term for a single piece of info in a database record? -Correct Answer ✔field
2|Page
ATT Test 9 Actual Exam Complete Questions and
Correct Detailed Answers (Verified Answers) Already
Graded A+2025
What does demultiplexing mean? -Correct Answer ✔Separating data from a single line
to different outputs
What was a main component of original computers? -Correct Answer ✔Vacuum tubes
What are the 3 categories of computers? -Correct Answer ✔Macro, mini, micro
What are the main components of a microprocessor? -Correct Answer ✔Input, control,
memory, ALU, output
What is the function of a bus? -Correct Answer ✔To provide a path or info or data
groups
What is the purpose of a general-purpose register? -Correct Answer ✔Temporary
storage
What is the purpose of a flag register? -Correct Answer ✔Indicate the status of the ALU
What information does a program counter contain? -Correct Answer ✔address of next
instruction
What are the basic sections of a computer? -Correct Answer ✔control, input, output
What is static RAM made of? -Correct Answer ✔flip flops
What is dynamic RAM made of? -Correct Answer ✔Capacitors
How does an FTC receiver affect gain? -Correct Answer ✔It has no effect
Which transmission line allows the least velocity? -Correct Answer ✔twisted pair
What is least likely to be used in fiber optics? -Correct Answer ✔photo cell
An optical fiber whose core is made of several concentric layers of materials is called
what? -Correct Answer ✔Multimode graded index optical fiber
1|Page
, ATT Test
An optical fiber with a small numeric aperature requires what? -Correct Answer ✔An
optical source capable of projecting a controlled narrow beam
What component should be chosen for fastest response time and narrowest bandwidth?
-Correct Answer ✔laser
How many indicator dots should be visible on the polishing fixture to be used correctly?
-Correct Answer ✔4
2 objects at the same range must be separated by how many beam widths in order to
be distinguished by a RADAR system? -Correct Answer ✔At least 1
What is used to make the filter from 1.5 mm or more flush with the polishing texture? -
Correct Answer ✔600 grit paper
What is an operating system? (hardware/ software?) -Correct Answer ✔software
What is the main program of an operating system? -Correct Answer ✔kernel
Which system case form factor has the best cooling? -Correct Answer ✔full tower
What is the primary disadvantage of the full tower case? -Correct Answer ✔Too big to fit
under a desk
What is the hold time of a power supply described? -Correct Answer ✔The length of
time that the power supply will keep producing its output after loosing its input
What is the function of a chipset? -Correct Answer ✔Provide interface between CPU
and the reset system
What are the 2 working parts of the CPU? -Correct Answer ✔EU and BIU
What is a characteristic of RISC instructions -Correct Answer ✔For a given RISC CPU,
the instructions are all the same length
Which is found in the BIOS? -Correct Answer ✔device drivers
What is the purpose of a device driver? -Correct Answer ✔To tell the system how to
operate a peripheral
What is the purpose of a local bus? -Correct Answer ✔Connects peripherals to the
processor bus
What is the term for a single piece of info in a database record? -Correct Answer ✔field
2|Page
