10+ Vocera Communications Interview Questions and Answers

Answers to interview questions for a Software Engineer position.

• AND truth table: 0 AND 0 = 0, 0 AND 1 = 0, 1 AND 0 = 0, 1 AND 1 = 1

• OR truth table: 0 OR 0 = 0, 0 OR 1 = 1, 1 OR 0 = 1, 1 OR 1 = 1

• Inverter diagram: A circle with a small bubble at the input side

• Circuit diagram for a project: Provide a brief explanation of the project and draw the circuit diagram

• Example C program: Write a program to calculate the factorial of a number

Both development and testing are equally important for delivering quality software.

• Development and testing are two sides of the same coin.

• Development creates the software while testing ensures its quality.

• Testing helps identify and fix bugs, improving the overall quality of the software.

• Without testing, software can have critical bugs that can lead to disastrous consequences.

• Both development and testing require different skill sets and are equally important for delivering qua...read more

AIDL is Android Interface Definition Language used for inter-process communication.

• AIDL is used to define the interface between client and service in Android.

• It allows communication between different processes in Android.

• To create inter-process communication using AIDL, we need to define the interface in AIDL file, implement the interface in service, and bind the service to the client.

• AIDL supports passing complex data types like arrays and objects between processes.

• Example: ...read more

Swapping numbers without using a third variable

• Use arithmetic operations like addition and subtraction

• XOR operation can also be used for swapping numbers

• Example: a = 5, b = 10; a = a + b; b = a - b; a = a - b; // Now a = 10, b = 5

Abstraction is the concept of hiding complex implementation details and showing only the necessary information. Encapsulation is the bundling of data and methods that operate on the data into a single unit.

• Abstraction focuses on what an object does rather than how it does it

• Encapsulation restricts access to certain components of an object, protecting the data from outside interference

• Abstraction allows for creating simple interfaces for complex systems

• Encapsulation helps in a...read more

Relocation to Pune is fine if the candidate is open to moving for the job.

• Consider the candidate's willingness to relocate

• Evaluate the benefits of working in Pune

• Discuss any potential challenges or concerns with relocation

Simple code to swap two numbers using a temporary variable

• Declare two variables a and b with values

• Create a temporary variable to store one of the numbers

• Assign the value of a to b and temporary to a

• Print the swapped values of a and b

Pointers in C are variables that store memory addresses of other variables.

• Pointers allow for direct manipulation of memory addresses

• They are used for dynamic memory allocation and deallocation

• Example: int *ptr; ptr = # // ptr now points to the memory address of num

Question about willingness to relocate for the job

• Be honest about your willingness to relocate for the job

• Consider the potential benefits of relocating, such as career growth opportunities

• Discuss any concerns you may have about relocating, such as family or personal commitments

Middleware in Nodejs is a function that sits between the request and response objects and performs some operations.

• Middleware functions can be used to handle authentication, logging, error handling, etc.

• They can be added to the application using the 'use' method of the 'app' object.

• Middleware functions can be chained together using the 'next' function.

• They can also be used to modify the request or response objects before passing them to the next middleware function.

• Some popul...read more

Strengths: Problem-solving skills, strong technical knowledge, effective communication. Weaknesses: Impatience, perfectionism, public speaking.

• Strength: Problem-solving skills - Able to analyze complex problems and come up with effective solutions.

• Strength: Strong technical knowledge - Proficient in various programming languages and technologies.

• Strength: Effective communication - Able to clearly convey ideas and collaborate with team members.

• Weakness: Impatience - Sometimes ...read more

C++ is an object-oriented programming language with additional features compared to C.

• C++ supports object-oriented programming concepts like classes and inheritance, while C does not.

• C++ has a richer standard library compared to C.

• C++ allows for function overloading and templates, which are not available in C.