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

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Q71. Can we see objects cached in Dynacache ?

Ans. We can see , monitor and can even change dynacache manually but for that we need to install a seperate application provided by WCS.

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Q72. How to enable Cross Site scripting protection in WCS ?

IBM WCS

Ans. By specifying XSiteScriptingProtection within wc-server.xml. Prohibited characters and attributes are specified within XSiteScriptingProtection to protect the application from any XSS attach.

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Q73. What is an Asset store ?

IBM WCS

Ans. Asset stores are collections of sharable resources (business artifacts, business processes and storefront assets) that can be leveraged in other stores.

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Q74. What is an Attribute Dictionary and What are its benefits ?

IBM WCS

Ans. Attribute dictionary is a set of common attributes that can be reused by multiple products.

The attribute dictionary provides a central place to manage shared attributes, with the following features:
The ability to standardize attributes.
The ability to easily compare attributes shared by products and SKUs.
The ability to quickly change attributes in one place to affect all catalog entries.

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Q75. Whats is a starter store ?

IBM WCS

Ans. Its the default store that comes in built with WCS.

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Q76. What is SAR file ?

IBM WCS

Ans. Its the Store Archive that holds the store Assets in the compressed form.

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Q77. What is a retriable command ?

IBM WCS

Ans. A retriable command is a controller command that can re-execute itself after encountering a system-level exception during the command execution.

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Q78. What are the benefits of Smart bean ?

IBM WCS

Ans. A smart data bean uses a lazy fetch method to retrieve its own data. This type of data bean can provide better performance in situations where not all data from the access bean is required, since it retrieves data only as required.

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Q79. Describe Marketing subsystem and What WCS components are part of this system ?

IBM WCS

Ans. The Marketing subsystem is a component of the WebSphere Commerce Server, and provides numerous marketing concepts to your site, designed to increase brand awareness, and to attract and retain customers. Components of the marketing subsystem provide functionality to create marketing campaigns, including customer segments and advertising; and e-mail activities.

Various components are -

1. Promotions
2. Auctions
3. eSpots
4. e Mail Campaigns
5. Hubs and Extended sites for affiliates

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Q80. Describe Catalog subsystem and the tables used in WCS for managing this ?

IBM WCS

Ans. The catalog subsystem or Catalog Management provides online catalog navigation, partitioning, categorization, and associations. In addition, the catalog subsystem includes support for personalized interest lists and custom catalog display pages. The catalog subsystem contains all logic and data relevant to an online catalog, including catalog groups (or categories), catalog entries, and any associations or relationships among them.

Tables used for Catalog subsystem

1. CATENTRY
2. CATENTREL

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Q81. Is it necessary to register controller command in CMDREG table ?

IBM WCS

Ans. It is not necessary to enter data in the CMDREG table, but an entry should be made in the struts-config.xml. The controller command can be registered in the CMDREG table by xml and SQL query.

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Q82. What are the tag libraries used in WCS ?

IBM WCS

Ans. Core tags, sql , xml and fmt tags.

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Q83. What is acugload?

IBM WCS

Ans. acugload is the utility to load the user access group in the appropriate database.

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Q84. What are the changes in Java 9 ?

Core Java

Ans. JVM and JDK are getting smaller.

New command line tool called jshell that will add native support and popularize a Java way to REPL (Read-Eval-Print-Loop)

private methods in interfaces

Introduction of the module system or project Jigsaw

JavaDoc Search

Light version of JSON API

HTTP2 client

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Q85. Explain Java 8 concurrency mechanism.

Core Java

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Q86. What are micro services ?

Web Service

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Q87. What is the use of Log4j ?

Logging

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Q88. What is the use of put() method in Restful webservices ?

Web Service

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Q89. How to consume services using Restful web services?

Web Service

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Q90. Mention the implicit objects in jsp

JSP

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Q91. Can we change return type of Overridden method ?

Core Java

Ans. Yes, we can change return type of overridden method in child class but child's return type should be sub-type of parent's return type.

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Q92. What is the difference between save() and persist() in hibernate ?

Hibernate

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Q93. Tell something about Sleep method.

Core Java

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Q94. What is your daily work schedule ?

General

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Q95. Implement a queue, using only stacks

Data Structure

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Q96. Write an algorithm for square root of a given number.

Core Java

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Q97. Difference between spring and spring boot

Spring Framework

Ans. Spring is a Framework where we have to Build the Configurations Manually but Springboot have default configurations that allow faster bootstrapping. Spring Framework requires a number of dependencies to create a web app. Spring Boot, on the other hand, can get an application working with just one dependency.

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Q98. Difference between constructor and method ?

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Q99. What is the maximum limit of domain supported by Route 53 ?

Amazon Web Service (AWS)

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Q100. What is the purpose of Spring inheritance ?

Spring

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