AT&T Intern Interview Questions and Answers

Q1. Tell me about yourself
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I'm a passionate student eager to learn and contribute, with a background in project management and a love for technology.
• Currently pursuing a degree in Computer Science, focusing on software development.

• Completed an internship at XYZ Corp, where I assisted in developing a mobile app.

• Active member of the university coding club, participating in hackathons and workshops.

• Volunteered at a local non-profit, helping to stre...read more
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Q2. Why do you want to join this company
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Q1. OSI model, netwroking concepts
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Easy basics of telecommunication

Qsns related to 4G communication,LAN etc

Q1. Sampling theorem
Ans. 
Sampling theorem states that a continuous signal can be perfectly reconstructed from its samples if the sampling rate is greater than twice the highest frequency component of the signal.
• The Nyquist-Shannon sampling theorem states that in order to accurately reconstruct a signal, the sampling rate must be at least twice the highest frequency component of the signal.

• If the sampling rate is too low, aliasing can occur, le...read more
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Q2. Favourite subject related questions
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Simple queations with some technical questions

Q1. Difference between digital and continuse signals
Ans. 
Digital signals are discrete and represent information in binary form, while continuous signals are analog and represent information in a continuous manner.
• Digital signals have a finite set of possible values (0 or 1), while continuous signals can have an infinite number of values within a range.

• Digital signals are more immune to noise and distortion compared to continuous signals.

• Examples of digital signals include co...read more
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Q2. Types of antennas used
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Various types of antennas are used for different applications, including dipole, Yagi, patch, and parabolic antennas.
• Dipole antennas are simple and commonly used for radio and television broadcasting.

• Yagi antennas are directional and used for long-distance communication.

• Patch antennas are compact and used in wireless communication systems.

• Parabolic antennas are used for satellite communication and have high gain.
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Q1. What is modulation
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Modulation is the process of varying a carrier signal's properties to encode information.
• Modulation is used in telecommunications to transmit information over long distances.

• There are different types of modulation such as amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM).

• In AM, the amplitude of the carrier signal is varied in proportion to the waveform being transmitted.

• In FM, the frequenc...read more
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Q2. Types of modulation
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Modulation is the process of varying a carrier signal's properties to transmit information.
• Types of modulation include amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM)

• AM involves varying the amplitude of the carrier signal to encode information

• FM involves varying the frequency of the carrier signal

• PM involves varying the phase of the carrier signal

• Other types of modulation include quadrat...read more
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Q1. Are you willing to relocate
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Q2. Salrary negotiations
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3 rounds starts with Technical and then group discussion and final round was about HR.

Online coding round with choice of your language.

Q1. Positives and negatives
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Q2. About relocations to different places.
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