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BestPeers Infosystem Interview Questions and Answers
12 Interview questions
Proc is a block of code that can be reused, while lambda is an anonymous function.
Proc is a saved block of code that can be called multiple times, while lambda is a one-time anonymous function.
Procs are defined using the 'proc' keyword, while lambdas are defined using the 'lambda' keyword.
Procs can take multiple arguments, while lambdas are limited to a single expression.
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
Variable and function declarations are hoisted to the top of their scope.
Only declarations are hoisted, not initializations.
Function declarations take precedence over variable declarations.
A closure is a function that has access to its own scope, as well as the scope in which it was defined.
A closure allows a function to access variables from its outer function even after the outer function has finished executing.
Closures are commonly used in JavaScript for data encapsulation and creating private variables.
Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction...
CI/CD automates software development processes, enabling faster and more reliable delivery of applications.
Version Control: Use Git for source code management, enabling collaboration and tracking changes.
Continuous Integration: Automate builds and tests using tools like Jenkins or GitHub Actions to ensure code quality.
Continuous Delivery: Deploy applications to staging environments automatically after passing test...
A basic pattern program generates a specific arrangement of characters or numbers in a structured format.
Pattern programs often use nested loops to control the number of rows and columns.
Example: A simple triangle pattern can be created using nested loops.
For instance, to print a right-angled triangle of stars: * ** *** ****
Patterns can also be numeric, like printing numbers in a pyramid shape.
Example: 1 ...
Callbacks are methods that are called at certain points in an object's lifecycle. Destroy permanently deletes a record, while delete marks it as deleted.
Validation callbacks are methods that are called before or after validations on an object. They are used to ensure data integrity.
Destroy method permanently deletes a record from the database, including associated records. It does not trigger callbacks or validati...
Many to many vs has and belongs to many association, and explanation of polymorphic association.
Many to many association involves a join table to connect two models with a many-to-many relationship.
Has and belongs to many association is a simpler version of many to many, where the join table is hidden.
Polymorphic association allows a model to belong to more than one other model, using a single association.
Example:...
Hashing is a technique to map data to a fixed-size value. To retain unique elements in a collection, use a hash set.
Create a hash set to store unique elements
Iterate through the collection and add each element to the hash set
If an element already exists in the hash set, skip adding it to retain only unique elements
A mixin is a way to add functionality to a class without using inheritance. Ruby does not support multiple inheritance due to potential conflicts.
Mixins in Ruby are achieved using modules, which can be included in classes to add methods and attributes.
Ruby does not support multiple inheritance because it can lead to the diamond problem, where conflicting methods from different parent classes cause ambiguity.
Instea...
Routes define URL patterns for mapping to controller actions in Rails. MVC architecture separates concerns in web development.
Routes in Rails define URL patterns and map them to controller actions
MVC architecture separates the application into Model, View, and Controller components
Rails filters are methods that run before, after, or around controller actions
Callbacks in Rails are methods that are run at certain po...
BestPeers Infosystem Interview Experiences
13 interviews found
Anonymous
I applied via Walk-in and was interviewed in May 2024. There were 2 interview rounds.
(3 Questions)
- Q1. Difference between proc and lambda
- Ans.
Proc is a block of code that can be reused, while lambda is an anonymous function.
Proc is a saved block of code that can be called multiple times, while lambda is a one-time anonymous function.
Procs are defined using the 'proc' keyword, while lambdas are defined using the 'lambda' keyword.
Procs can take multiple arguments, while lambdas are limited to a single expression.
- Q2. What is mixin and does ruby support multiple inheritence if yes then how and no then why?
- Ans.
A mixin is a way to add functionality to a class without using inheritance. Ruby does not support multiple inheritance due to potential conflicts.
Mixins in Ruby are achieved using modules, which can be included in classes to add methods and attributes.
Ruby does not support multiple inheritance because it can lead to the diamond problem, where conflicting methods from different parent classes cause ambiguity.
Instead of ...
- Q3. What are and validations callbacks and difference between destroy and delete
- Ans.
Callbacks are methods that are called at certain points in an object's lifecycle. Destroy permanently deletes a record, while delete marks it as deleted.
Validation callbacks are methods that are called before or after validations on an object. They are used to ensure data integrity.
Destroy method permanently deletes a record from the database, including associated records. It does not trigger callbacks or validations.
D...
(3 Questions)
- Q1. Difference between many to many and has and belongs to many association and explain polymorphic association
- Ans.
Many to many vs has and belongs to many association, and explanation of polymorphic association.
Many to many association involves a join table to connect two models with a many-to-many relationship.
Has and belongs to many association is a simpler version of many to many, where the join table is hidden.
Polymorphic association allows a model to belong to more than one other model, using a single association.
Example: Many...
- Q2. What is hash and coding problem to retain only unique elements in a collection
- Ans.
Hashing is a technique to map data to a fixed-size value. To retain unique elements in a collection, use a hash set.
Create a hash set to store unique elements
Iterate through the collection and add each element to the hash set
If an element already exists in the hash set, skip adding it to retain only unique elements
- Q3. Tell me about project and some implementation related question for that
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement
(2 Questions)
- Q1. Basic's flow of Python
- Ans. Need to specify the flow on python development as I was giving the interview for the same.
- Q2. How to implement CI/CD
- Ans.
CI/CD automates software development processes, enabling faster and more reliable delivery of applications.
Version Control: Use Git for source code management, enabling collaboration and tracking changes.
Continuous Integration: Automate builds and tests using tools like Jenkins or GitHub Actions to ensure code quality.
Continuous Delivery: Deploy applications to staging environments automatically after passing tests, us...
Interview Preparation Tips
- OOPS
- Algorithms
- python
- Devops
Skills evaluated in this interview
I appeared for an interview in Oct 2023.
Some technical and coding questions were there.
(1 Question)
- Q1. Basic pattern program.
- Ans.
A basic pattern program generates a specific arrangement of characters or numbers in a structured format.
Pattern programs often use nested loops to control the number of rows and columns.
Example: A simple triangle pattern can be created using nested loops.
For instance, to print a right-angled triangle of stars: * ** *** ****
Patterns can also be numeric, like printing numbers in a pyramid shape.
Example: 1 121 ...
(1 Question)
- Q1. Questions from resume.
(1 Question)
- Q1. Basic HR questions.
Basic programming questions
(1 Question)
- Q1. Leet code meduim and java script output questions
(2 Questions)
- Q1. What is hoisting ?
- Ans.
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
Variable and function declarations are hoisted to the top of their scope.
Only declarations are hoisted, not initializations.
Function declarations take precedence over variable declarations.
- Q2. What is clouser
- Ans.
A closure is a function that has access to its own scope, as well as the scope in which it was defined.
A closure allows a function to access variables from its outer function even after the outer function has finished executing.
Closures are commonly used in JavaScript for data encapsulation and creating private variables.
Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { ...
Interview Preparation Tips
Skills evaluated in this interview
Just normally asked some easy questions contains with SQL query and array programs
(4 Questions)
- Q1. Normally ask about my self introduction
- Q2. Self introduction
- Q3. Why changed your last job
- Q4. About the last project description
aaru
I applied via Walk-in and was interviewed in Dec 2023. There were 3 interview rounds.
Normal Apti resioning questions
Prime numbers ,fabbinocccie series
(1 Question)
- Q1. Tell me about yourself
Selected
I applied via Campus Placement and was interviewed in Dec 2022. There were 4 interview rounds.
Some aptitude question with 3 coding question were asked on string and array
(2 Questions)
- Q1. Recruiter gone through resume first and then all the technical question were asked beyond resume also asked about DBMS, deadlock, pointers, strong core concept on language
- Q2. What is final finally and difference? what is static final and scope of local variable? what is deadlock and method to prevent? is java fully or partial object oriented if partial then why? all oops concep...
- Ans.
Questions related to Java programming language concepts and SQL queries.
final is a keyword used to declare a constant value, finally is a block of code that executes after a try-catch block
static final is used to declare a constant value that can be accessed without creating an instance of the class, local variable has a limited scope within a method
Deadlock occurs when two or more threads are blocked and waiting for e...
(1 Question)
- Q1. About family bg. what is your interest. what are the project any other platform for coding you use and what is the score in that
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Dec 2022. There were 2 interview rounds.
(2 Questions)
- Q1. OOPS Concept Array vs Linked LIst What is DBMS DDL and DML What is SDLC Two models of SDLC
- Ans.
Questions related to OOPS, data structures, DBMS, and SDLC models.
OOPS concept refers to the principles of object-oriented programming such as encapsulation, inheritance, and polymorphism.
Array is a static data structure while linked list is a dynamic data structure.
DBMS stands for Database Management System which is a software system used to manage and organize data.
DDL (Data Definition Language) is used to define the...
- Q2. The final round is ADMIN interaction round in which they told me that my hobbies are not interesting and even after clearing two technical round they told me that i have no technical knowledge. they assu...
Interview Preparation Tips
- basic programming
Skills evaluated in this interview
A test which includes SQL query one string question ,one array question and one passage
(1 Question)
- Q1. Waiting for interview
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