Interview Questions and Answers for 'L' | Search Interview Question

Interview Questions and Answers - Order By Newest

Q2041. What are the limitations with using interpolation ? Why do we need property binding ?

Ans. Interpolation can only work with String types and hence we need property binding while working with other data types.

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Q2042. Have you ever had any problem with asynchronous programming due to race condition ?

Angular

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Q2043. What are the benefits of using UI framework like Angular , View js etc instead of plain vanilla js and html ?

Javascript

Ans. These frameworks facilitates easier product development and enhancement and maintainability by having separation of concerns ( using oops ) and helps in development of reusable libraries / components. So in nutshell , they make development and maintenance of large scale application easier.

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Q2044. Explain method overridding.

Core Java

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_{Like Discuss Correct / Improve overridding polymorphism Asked in 1 Companies}

Q2045. What are the libraries and tools for cloud storage on GCP ?

Google Cloud Platform (GCP)

Ans. Console - GUI Interface
gsutil - Command Line Interface
Rest API - Using JSON or XML API

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Q2046. What do you know about Google Compute Engine ?

Google Cloud Platform (GCP)

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Q2047. How are the Google Compute Engine and Google App Engine related ?

Google Cloud Platform (GCP)

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Q2048. How does the pricing model work in GCP cloud ?

Google Cloud Platform (GCP)

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Q2049. What are the different methods for the authentication of Google Compute Engine API ?

Google Cloud Platform (GCP)

Ans. MS active directory concept and in GCP its Cloud Identity

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Q2050. What is Google BigQuery? What are the benefits of BigQuery for the data warehouse practitioners ?

Google Cloud Platform (GCP)

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Q2051. How do you version your projects ?

General

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Q2052. Can you please share best practices while designing an angular application ?

Angular

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Q2053. How can print the whole object state in the console in javascript ?

Javascript

Ans. We can JSON.stringify

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Q2054. Which one of AWS Lambda or API Gateway is a compute service ?

Amazon Web Services (AWS)

Ans. AWS Lambda

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Q2055. What is the difference between closing and completing the observer / listener ?

Angular

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Q2056. Have you ever faced problem because of some listener / observers / subscriber performing action on the subscription which you don't want ? How did you fix the problem ?

Angular

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Q2057. What is the difference between subscribe and emit ?

Angular

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Q2058. What is the difference between subscribe and unsubscribe ?

Angular

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_{Like Discuss Correct / Improve RxJs subscribe vs unsubscribe}

Q2059. What is the difference between Subject and Observable ?

Angular

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Q2060. What does pipe does on an observable ?

RxJs

Ans. With pipe we specify the operator function to which this observable is passed for transforming the observable.

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_{Like Discuss Correct / Improve Angular Observable}

Q2061. What do we specify within the pipe method ?

RxJs

Ans. Operator function to which an observable is passed for transformation.

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Q2062. Why do we do transformation on the observable itself rather than doing it in the subscriber ?

RxJs

Ans. Because that way we just need to do that transformation at one place and not within each subscriber. Single source of truth.

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Q2063. Can we specify multiple functions in the pipe ? What happens if we do it ?

RxJs

Ans. Yes, We can specify multiple functions within pipe method. In that case first function get's called with the observable , the response if then passed to the second method and so on.

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Q2064. Can we specify multiple maps within pipe ?

RxJs

Ans. Yes, it's same as passing multiple methods within pipe. Output of one map is passed to second and so on.

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Q2065. How can we sort an observable of a user array on user name ( name being one of the field of user ) ?

RxJs

Ans. userArrayObservable.pipe(
map(userArray => {
return userArray.sort(comparator);
});
)

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Q2066. Can we do a thread specific heap allocation ?

Memory Management

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Q2067. Do you ever merge changes from one feature branch to another ? Why ?

SCM

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_{Like Discuss Correct / Improve SCM Source Code Management Configuration Control Git Svn}

Q2068. What does this warning message for the unit test means

WARN: 'Spec has no expectations.'

Angular

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Q2069. How can you trim all strings in an array ?

Ans. array.map(s => s.trim())

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Q2070. Can we get the validators for a control in angular ? How ?

Angular

Ans. No - https://github.com/angular/angular/issues/13461

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