ATT TECHNOLOGY AND HISTORY
COMPREHENSIVE TEST QUESTIONS
AND ANSWERS
1. Who is the primary inventor credited with the invention of the telephone and founding the
precursor to AT&T?
A. Thomas Edison
B. Nikola Tesla
C. Guglielmo Marconi
D. Alexander Graham Bell
Answer: D
Conceptual Explanation: Alexander Graham Bell received the first U.S. patent for the
telephone in 1876 and founded the Bell Telephone Company.
2. In which year did the historic divestiture of the Bell System take place, splitting AT&T into
seven Regional Bell Operating Companies?
A. 1984
B. 1980
C. 1992
,D. 1976
Answer: A
Conceptual Explanation: The breakup of the Bell System, often called ‘divestiture’,
officially occurred on January 1, 1984, following an antitrust lawsuit.
3. Bell Labs, the research arm of the original AT&T, is famous for inventing which
fundamental electronic component in 1947?
A. Vacuum Tube
B. Transistor
C. Microchip
D. Capacitor
Answer: B
Conceptual Explanation: The transistor was invented at Bell Labs in late 1947 by John
Bardeen, Walter Brattain, and William Shockley.
4. Which operating system, which serves as the foundation for many modern systems like
Linux and macOS, was originally developed at Bell Labs?
A. Unix
B. MS-DOS
C. Windows
D. OS/2
, Answer: A
Conceptual Explanation: Unix was developed in the late 1960s at Bell Labs by Ken
Thompson, Dennis Ritchie, and others.
5. The C programming language, widely used in systems programming, was created at Bell
Labs by whom?
A. Bjarne Stroustrup
B. Guido van Rossum
C. James Gosling
D. Dennis Ritchie
Answer: D
Conceptual Explanation: Dennis Ritchie created the C programming language at Bell Labs
between 1969 and 1973 for use with the Unix operating system.
6. What does the acronym LTE stand for in the context of mobile networking?
A. Long Term Evolution
B. Linear Transmission Energy
C. Local Telecommunication Exchange
D. Low Transfer Efficiency
Answer: A
COMPREHENSIVE TEST QUESTIONS
AND ANSWERS
1. Who is the primary inventor credited with the invention of the telephone and founding the
precursor to AT&T?
A. Thomas Edison
B. Nikola Tesla
C. Guglielmo Marconi
D. Alexander Graham Bell
Answer: D
Conceptual Explanation: Alexander Graham Bell received the first U.S. patent for the
telephone in 1876 and founded the Bell Telephone Company.
2. In which year did the historic divestiture of the Bell System take place, splitting AT&T into
seven Regional Bell Operating Companies?
A. 1984
B. 1980
C. 1992
,D. 1976
Answer: A
Conceptual Explanation: The breakup of the Bell System, often called ‘divestiture’,
officially occurred on January 1, 1984, following an antitrust lawsuit.
3. Bell Labs, the research arm of the original AT&T, is famous for inventing which
fundamental electronic component in 1947?
A. Vacuum Tube
B. Transistor
C. Microchip
D. Capacitor
Answer: B
Conceptual Explanation: The transistor was invented at Bell Labs in late 1947 by John
Bardeen, Walter Brattain, and William Shockley.
4. Which operating system, which serves as the foundation for many modern systems like
Linux and macOS, was originally developed at Bell Labs?
A. Unix
B. MS-DOS
C. Windows
D. OS/2
, Answer: A
Conceptual Explanation: Unix was developed in the late 1960s at Bell Labs by Ken
Thompson, Dennis Ritchie, and others.
5. The C programming language, widely used in systems programming, was created at Bell
Labs by whom?
A. Bjarne Stroustrup
B. Guido van Rossum
C. James Gosling
D. Dennis Ritchie
Answer: D
Conceptual Explanation: Dennis Ritchie created the C programming language at Bell Labs
between 1969 and 1973 for use with the Unix operating system.
6. What does the acronym LTE stand for in the context of mobile networking?
A. Long Term Evolution
B. Linear Transmission Energy
C. Local Telecommunication Exchange
D. Low Transfer Efficiency
Answer: A
