General Atomics Software Test Engineer Intern Interview Questions and Answers

Q1. What is the internal implementation of Hashing and what is collision?
Ans. 
Hashing is a technique used to map data to a fixed-size array, collision occurs when two different inputs produce the same hash value.
• Hashing involves using a hash function to map data to a fixed-size array.

• Collision happens when two different inputs produce the same hash value.

• Common techniques to handle collisions include chaining and open addressing.
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Q2. Is time complexity of HashMap always O(1) ?
Ans. 
No, time complexity of HashMap is not always O(1).
• Time complexity of HashMap is O(1) on average, but can degrade to O(n) in worst case scenarios.

• Worst case scenarios include hash collisions, which can lead to linear probing and degrade performance.

• Load factor and capacity of the HashMap can also affect time complexity.

• In scenarios where many keys hash to the same index, the time complexity can degrade.
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Q1. Yet to have the interview. Ambition box is forcefully making me enter these details
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1 dsa question 1 sql and 18 mcq questions

Q1. Lot of questions from resumes and projects
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Q2. Easy DSA questions and oops questions
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Q1. Differentiate between RISC and CISC
Ans. 
RISC stands for Reduced Instruction Set Computing and CISC stands for Complex Instruction Set Computing.
• RISC processors have a smaller set of simple instructions, while CISC processors have a larger set of complex instructions.

• RISC processors typically execute instructions in one clock cycle, while CISC processors may require multiple clock cycles.

• RISC processors rely on optimizing compilers for performance, while CISC...read more
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Q2. Define and differentiate interpreter and compiler
Ans. 
Interpreter translates code line by line while compiler translates entire code at once.
• Interpreter: translates code line by line, slower execution, easier debugging (e.g. Python)

• Compiler: translates entire code at once, faster execution, harder debugging (e.g. C++)
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Q1. AWS system design question
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Q1. String Manipulation program
Ans. 
Create a program for string manipulation using an array of strings.
• Use built-in string manipulation functions like substring, replace, and concat.

• Iterate through the array of strings to perform different manipulations.

• Consider edge cases like empty strings or null values.

• Example: Reverse each string in the array and concatenate them together.
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Q2. Internal Working of HashMap
Ans. 
HashMap is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where it will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• To retrieve a value, the key is hashed again to fi...read more
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Q3. Spring Annotations
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Q1. Coding question
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Q2. Maven working in Depth
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Q3. SQL, Oracle/MySql
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Q1. Storage classes, Volatile, Programs on arrays
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Q2. Describe my project
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Q3. SDLC in general
Ans. 
SDLC stands for Software Development Life Cycle, which is a process used by software development teams to design, develop, and test high-quality software.
• SDLC consists of several phases including planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of activities and deliverables to ensure the software meets the requirements and quality standards.

• Examples of SDLC models include...read more
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Q4. CAN protocol functionality
Ans. 
CAN protocol is a communication standard used in automotive and industrial applications.
• CAN protocol stands for Controller Area Network

• It is a message-based protocol used for communication between electronic control units (ECUs)

• CAN protocol allows for high-speed communication and real-time data transmission

• It is commonly used in automotive applications for functions such as engine control, transmission control, and bod...read more
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Tree algorithm about some riddels

Q1. Coding samples and expected output
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Q1. Virtual functions Polymorphism Runtime polymorphism compile time polymorphism Constructor Destructor Destructor overloading possible why Deep copy vs shallow copy Program for operator overloading Program f...read more
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Q1. Working of project
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Q1. Discussion about package
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