Zencorp Techno Solutions Interview Questions and Answers

The 'Static' keyword is used to declare a variable or function that is shared by all instances of a class.

• Static variables are initialized only once and retain their value throughout the program.

• Static functions can be called without creating an instance of the class.

• Static variables and functions are accessed using the class name instead of an object instance.

• Static variables and functions are commonly used for counters, caches, and utility functions.

Various technologies are used in ASE including diagnostic tools, repair equipment, computer software, and specialized machinery.

• Diagnostic tools such as OBD scanners and multimeters are used to identify vehicle issues

• Repair equipment like hydraulic lifts and impact wrenches are used for maintenance tasks

• Computer software such as repair manuals and diagnostic programs aid in troubleshooting

• Specialized machinery like wheel alignment systems and engine analyzers help in precise ...read more

Tables in HTML can be created using the <table>, <tr>, and <td> tags.

• Use the <table> tag to create the table structure.

• Use the <tr> tag to define a row within the table.

• Use the <td> tag to define data cells within each row.

• You can also use <th> tag to define header cells within each row.

• Use attributes like colspan and rowspan to merge cells or span across multiple rows/columns.

Multithreading is used to improve performance by allowing multiple tasks to run concurrently on a single processor.

• Multithreading can help utilize the CPU more efficiently by allowing it to switch between tasks quickly.

• It can improve responsiveness in applications by keeping the user interface responsive while performing background tasks.

• Multithreading is commonly used in applications like web servers to handle multiple client requests simultaneously.

Reverse an array of strings without using STL function.

• Iterate through the array from both ends and swap the elements until reaching the middle.

• Use a temporary variable to store the element being swapped.

• Ensure to handle odd and even length arrays differently.

• Example: Input array ['apple', 'banana', 'cherry', 'date'], Output array ['date', 'cherry', 'banana', 'apple']

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 is a structured process that consists of several phases such as planning, analysis, design, implementation, testing, and maintenance.

• Each phase of SDLC has specific goals and deliverables that must be completed before moving on to the next phase.

• Examples of SDLC models include Waterfall, Agile, and DevOps.

• SDLC helps ens...read more

OOPs concepts refer to Object-Oriented Programming concepts which include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class. Example: Animal class can be inherited by Dog class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Using private variables and public methods in a class.

• Polymorphism: Ability to present the same interface for differen...read more

Reverse a linked list by changing the direction of pointers

• Start with three pointers: current, previous, and next

• Iterate through the linked list, updating pointers to reverse the direction

• Update the head of the linked list to be the previous node