Research and Development Intern Interview Questions and Answers

SDLC/STLC are software development/testing lifecycles. Agile is a development methodology focused on iterative and incremental development.

• SDLC (Software Development Life Cycle) is a process used to design, develop, and test software. It includes phases like planning, analysis, design, implementation, and maintenance.

• STLC (Software Testing Life Cycle) is a process used to test software. It includes phases like test planning, test design, test execution, and test closure.

• Agile...read more

A 25% duty cycle clock can be designed using D flip-flops by dividing the clock frequency by 4.

• Use a D flip-flop to divide the clock frequency by 2.

• Use another D flip-flop to divide the output of the first flip-flop by 2 again.

• Connect the Q output of the second flip-flop to the D input of the first flip-flop to create a feedback loop.

• The resulting circuit will produce a 25% duty cycle clock signal.

Implementing OOPs concepts in Python using code examples.

• Create classes and objects to represent real-world entities

• Use inheritance to create a hierarchy of classes

• Encapsulate data and behavior within classes

• Implement polymorphism by overriding methods

• Use abstraction to hide implementation details

A latch is level-sensitive and a flip-flop is edge-triggered. Flip-flops are used for sequential circuits while latches are used for temporary storage.

• Latches are level-sensitive, meaning the output changes as long as the enable signal is active. Flip-flops are edge-triggered, changing only on the rising or falling edge of the clock signal.

• Flip-flops are commonly used in sequential circuits like registers and counters, while latches are used for temporary storage or data tran...read more

Merge two sorted linked lists into a single sorted linked list.

• Create a new linked list to store the merged result.

• Compare the values of the nodes from both input lists and add the smaller value to the result list.

• Move the pointer of the list with the smaller value to the next node and continue the process until both input lists are empty.

A polymer is a large molecule composed of repeating structural units, typically connected by covalent chemical bonds.

• Polymers can be natural (e.g. proteins, DNA) or synthetic (e.g. plastics, rubber)

• They have a wide range of properties and applications, such as in packaging, textiles, and biomedical devices

• Polymerization is the process of combining monomers to form a polymer chain