Infosys Assistant System Engineer Interview Questions and Answers

A string is a sequence of characters used to represent text in programming and data processing.

• Strings can include letters, numbers, and symbols. Example: 'Hello, World!'

• In many programming languages, strings are enclosed in quotes. Example: '12345' or "abcde".

• Strings are immutable in languages like Python, meaning they cannot be changed after creation.

• Common operations on strings include concatenation, slicing, a...read more

An array is a data structure that stores a fixed-size sequence of elements of the same type.

• Arrays can hold multiple values in a single variable, e.g., ['apple', 'banana', 'cherry'].

• They are indexed, meaning each element can be accessed using its position, e.g., array[0] gives 'apple'.

• Arrays have a fixed size, defined at the time of creation, e.g., int[] numbers = new int[5];

• They can be multi-dimensional, allowing...read more

Data types define the kind of data a variable can hold, influencing operations and memory allocation.

• Primitive data types: e.g., int (integer), float (floating-point), char (character).

• Composite data types: e.g., arrays (collection of elements), structs (custom data structures).

• Abstract data types: e.g., lists, stacks, queues, which define operations on data.

• User-defined data types: e.g., classes in object-oriente...read more

I faced a challenging situation when a critical project deadline was moved up unexpectedly, requiring quick adjustments and teamwork.

• Prioritization: I had to quickly assess tasks and prioritize them based on urgency and importance.

• Team Collaboration: I organized daily stand-up meetings to ensure everyone was aligned and aware of their responsibilities.

• Resource Management: I identified areas where we could optimize...read more

Compiler is a program that translates source code written in a high-level language into machine code.

• Compilers are used to convert human-readable code into machine-readable code.

• They perform lexical analysis, syntax analysis, semantic analysis, and code optimization.

• Examples of compilers include GCC, Clang, and Microsoft Visual C++.

An operating system is a software that manages computer hardware and software resources.

• It acts as an interface between the user and the computer hardware.

• It provides services to applications and manages system resources.

• Examples include Windows, macOS, Linux, Android, iOS.

• It controls the allocation of memory, processing power, and input/output devices.

• It provides security and protection to the system and its data...read more