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

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Q91. Write a unit test case using java 8.

Ans. public List convertAllToUpperCase(List words) {
return words.stream().map(String::toUpperCase).collect(Collectors.toList());
}

@Test
public void testAllToUpperCase() {
List expected = Arrays.asList("JAVA8", "STREAMS");
List result = convertAllToUpperCase(Arrays.asList("java8", "streams"));
assertEquals(expected, result);
}

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Q92. Write a program to make an array act as a set.

Core Java

Ans. public Set convertArrayToList(T array[]) {
Set set = new HashSet<>(Arrays.asList(array));
return set;
}

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Q93. Design Texas Hold Em poker game

Design

^{This question was recently asked at 'Alcatel Lucent'.This question is still unanswered. Can you please provide an answer.}

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Q94. How can we protect an application from an XSS attack ?

Security

Ans. By properly encoding data while persisting as well as retrieval.

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Q95. how would you build application stack using Cloud Formation ?

Amazon Web Services (AWS)

Ans. Open the AWS CloudFormation console at https://console.aws.amazon.com/cloudformation . Create a new stack by using one of the following options: Choose Create Stack. This is the only option if you have a currently running stack.

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Q96. How would you secure resources in Cloud ?

Cloud Computing

Ans. There are multiple types of security GCP provides to every customer. Data, Network, Compute, and Services. Each service have its own security layer and Google provides clients to build as per the GCP best practices like building VPC, IAM, Firewall rules and so on

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Q97. Name types of AWS Elastic Load Balancers.

Amazon Web Services (AWS)

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Q98. What is an AWS placement group

Amazon Web Services (AWS)

Ans. It is a logical grouping of instance with a single availability zone to prevent latency.

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Q99. Explain AWS IAM.

Amazon Web Services (AWS)

Ans. AWS Identity And Access Management (IAM) is a webservice provided by AWS platform that provides access control capabilities (authentication and authorization) to AWS resources.

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Q100. What are some GCP Billing and Budgeting services ?

Google Cloud Platform (GCP)

Ans. Budgets and Alerts
Reports
Quotas

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Q101. How On demand Self Service helps saving cost ?

Cloud Computing

Ans. On Demand service restricts cost by paying only for the use and Self Service saves cost by reducing intermediary human resource cost.

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Q102. How Resource Pooling helps saving cost ?

Cloud Computing

Ans. With resource pooling and Pay as per use , Bigger companies like Google and Amazon can buy Large physical hardware and employ economy of scale and hence resulting in cost saving for customers.

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Q103. What is the difference between Billing Alerts and Budget Quotas in GCP ?

Google Cloud Platform (GCP)

Ans. Alerts only let customer knows of any excessive usage whereas Quota restricts the usage beyond a certain point.

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Q104. What are the different types of Services GCP provides ?

Google Cloud Platform (GCP)

Ans. Compute
Network
Storage
Big Data
Machine Learning

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Q105. Why would a cloud customer use resources in multiple regions and zones ?

Cloud Computing

Ans. 1. Fault Tolerance
2. Better Access by bringing the application closer to the users.

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Q106. Which category of services, Amazon Lambda belongs to ?

Amazon Web Services (AWS)

Ans. It's Serverless and PAAS ( Platform as a service )

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Q107. Is Google App Engine , IAAS, PAAS or SAAS ?

Google Cloud Platform (GCP)

Ans. It's PAAS ( Platform as a service )

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Q108. How does cloud computing helps saves cost ?

Cloud Computing

Ans. Cloud computing helps saving overall cost for infrastructure and service usage through following -

1. On demand Services and elasticity - You only pay for what you use. Less Ideal time.

2. Resource Pooling

3. Self Service - Less involvement of human resources

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Q109. What is the use of defining equals , compareTo and hashcode methods in a class ? Where are they used ?

Core Java

Ans. equals, compareTo and hashcode are of use when the objects are used within collections.

Equals helps with collections that helps maintaining only unique objects ( like Set )

compare and compareTo helps with collections that helps maintaining objects in order ( TreeSet, TreeMap etc )

hascode helps with collections that facilitates hash searching ( like hashSet, hashMap etc )

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Q110. Can we check two html radio buttons together ?

Html

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Q111. Difference between Span and Div ?

Html

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Q112. Develop an address form in React js.

React JS

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Q113. CSS Box Model

CSS

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Q114. prototypal inheritance in Javascript

JavaScript

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Q115. Create a component and sort the data to show specific information.

React JS

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Q116. Write a method to track every click on a page.

JavaScript

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Q117. Why would you use XML over JSON when using ajax ?

JSON

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Q118. Explain Identity management in GCP ?

Google Cloud Platform (GCP)

Ans. IAM is used to define the level of access to GCP services

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Q119. Explain Virtual machines in Google Cloud Platform.

Google Cloud Platform (GCP)

Ans. Virtual machines are IAAS in GCP which can called Compute Engine

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Q120. Can you explain integration between Spring and Hibernate ?

Hibernate

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