Lucid Technologies Softwaretest Engineer Interview Questions and Answers for Freshers

Q1. Whats is Denpendency injection?
Ans. 
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
• Allows for easier testing by injecting mock dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Examples: Constructor injection, Setter injection, Interface injection
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Q2. What is middleware
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Middleware is software that acts as a bridge between different applications, allowing them to communicate and share data.
• Middleware facilitates communication between different software applications

• It can handle tasks such as message queuing, data transformation, and security

• Examples of middleware include message brokers like RabbitMQ, ESBs like MuleSoft, and API gateways like Kong
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Q1. What is array?
Ans. 
An array is a data structure that stores a fixed-size sequence of elements of the same type, accessible by index.
• Arrays can hold multiple values in a single variable, e.g., ['apple', 'banana', 'cherry'].

• They are zero-indexed, meaning the first element is accessed with index 0.

• Arrays can be of any data type, such as integers, strings, or objects.

• They have a fixed size once declared, e.g., int[] numbers = new int[5];

• Arra...read more
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Q2. What is HashMap?
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A HashMap is a data structure that stores key-value pairs for efficient data retrieval using a hash function.
• Stores data in key-value pairs, e.g., `HashMap<String, Integer> map = new HashMap<>();`

• Uses a hash function to compute an index for storing values, ensuring fast access.

• Allows null values and one null key, e.g., `map.put(null, 1);`

• Not synchronized, meaning it's not thread-safe; use `ConcurrentHashMap...read more
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Q1. Python and selenium
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Q2. Jira and Git hub
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Q3. Manual testing questions
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General manager of a company that is a member of a group of companies and a member is responsible for managing and managing a large company that has the capacity for managing a company and managing the entire company in one place and a small guy business that has been in business in the last several years is responsible

Q1. Actually there’s no reason to think it’s a bad sign that you can’t get a good job in your life because you’re going to get paid for the rest the year if you have a job that you’re going into the future you...read more
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Q2. Y c malloc function returns and y stack operates in reverse
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The y c malloc function returns memory from the heap while y stack operates in reverse.
• The y c malloc function is used to allocate memory dynamically from the heap.

• The y stack operates in reverse, meaning the last item pushed onto the stack is the first item popped off.

• This can cause issues if the programmer is not careful with memory allocation and stack usage.
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Reasoning verbal english paragraphs

Q1. Technical questions in about subject
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Q1. In hr round they ask general questions and salary package
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Q1. Reasoning kind of questions
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Q1. About Test plan
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Logical Reasoning, Verbal communication

Q1. C code to detect loop in linkedlist.
Ans. 
Use Floyd's Cycle Detection Algorithm to detect loop in linked list.
• Initialize two pointers, slow and fast, both pointing to the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps in each iteration.

• If there is a loop, the slow and fast pointers will meet at some point.

• To find the start of the loop, reset one pointer to the head and move both pointers at the same pace until they meet aga...read more
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Q2. Storage class Specifiers in c language
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Storage class specifiers in C language define the scope and lifetime of variables.
• Storage class specifiers include auto, register, static, and extern.

• Auto variables are stored in the stack and have local scope.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared in one file and can be accessed in another file.
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Q3. Headerfile usage in c language
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Header files in C language are used to declare functions, variables, and constants that are defined in other source files.
• Header files are included at the beginning of a C program using the #include directive.

• They help in organizing code by separating declarations from the actual implementation.

• Common header files in C include , , and .

• Header files can also be created by the user to declare c...read more
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