AT&T Customer Service Agent Interview Questions and Answers for Experienced

Q1. OSI model, netwroking concepts
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Q1. Why do you want to work at ericsson
Ans. 
I want to work at Ericsson because of their innovative technology solutions and global impact in the telecommunications industry.
• Ericsson is a leader in the telecommunications industry, providing cutting-edge technology solutions.

• I am impressed by Ericsson's global presence and impact, working with clients all over the world.

• I am excited about the opportunity to contribute to Ericsson's innovative projects and work wit
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Q2. What do you think about repetitive tasks
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Repetitive tasks can be monotonous but also provide an opportunity for efficiency and improvement.
• Repetitive tasks can lead to boredom and decreased motivation.

• However, they also offer a chance to streamline processes and identify areas for improvement.

• For example, data entry may be repetitive but can highlight errors in the system that need to be addressed.

• Creating templates or checklists can help make repetitive task...read more
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First round was aptitude and coding test conducted on amcat. Coding questions were 2 and they were of medium level and aptitude was also not very tough, it was easy.

Q1. My technical interview was mostly on my coding skills such as DSA and logic building skills . Also, your CS fundamentals should be really strong that is computer networks and operating system. Most of the ...read more
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Q1. OS based question
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Q2. Data Structure based question
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Q1. Basic Background Information
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The 1st round is a written test. The written test consists of some Aptitude questions,technical and 2 coding questions.

Q1. What is Stack? What are the applications of Stack? Fibonacci Series code.
Ans. 
A stack is a linear data structure that follows the Last-In-First-Out (LIFO) principle.
• Applications include function call stack, undo-redo operations, infix to postfix conversion, and backtracking algorithms.

• Push and pop operations are used to add and remove elements from the stack, respectively.

• Fibonacci series can be implemented using a stack or recursion.

• Stacks can be implemented using arrays or linked lists.
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Q2. Toughest challenges that you have faced in your life? How did u overcome it?
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Aptitude was online and was not that tough

Q1. Osi modle ,opps concept ,TCP,UDP,
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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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