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Interview Questions and Answers for 'Verilogue' - 11 question(s) found - Order By Newest

Frequently asked in Cognizant ( Based on 2 feedback )
  Q1. What are Inner , Outer , Left and Right Joins in SQL ?Database2017-01-09 13:07:55

Ans. Inner join is the intersection of two tables on the condition defined by the where clause i.e will get records from both tables matched by a column.

Outer join is the union of two tables i.e will get all records from both tables and will put null in the columns where related records are not present.

Left Outer join is the left union of two tables i.e all records from the table on the left and values from the right table for related records else null for the columns from right table.

Right Outer join is the right union of two tables i.e all records from the table on the right and values from the left table for related records else null for the columns from left table.

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   Like      Discuss      Correct / Improve     sql  inner join  outer join  right join  left join     EPAM  Antra  MSCI  HCL Technologies  Cognizant (CTS)  Morgan Stanley  Wipro  Infosys  Accenture  IBM  PayPal  A9.com  Curriculum Associates  Gold Coast IT  Kobie Marketing  Hybris  Aptroid Technologies  E2open  IGATE  SnapDeal  Verilogue  Span Infotech      basic        frequent


Very Frequently asked. Have been asked in HCL Technologies very frequently ( based on 3 feedback ). Among first few questions in many interviews.
  Q2. Differences between abstract class and interface ?Core Java
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Ans. Abstract classes can have both abstract methods ( method declarations ) as well as concrete methods ( inherited to the derived classes ) whereas Interfaces can only have abstract methods ( method declarations ).

A class can extend single abstract class whereas it can implement multiple interfaces.

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   Like      Discuss      Correct / Improve     java   classes   abstract class   interfaces     GlobalLogic  HCL Technologies  Tata Consultancy (TCS)  Infosys  Wipro  Mindtree  CapitalOne  Accenture  IBM India  Infoview Technologies  Salesforce  AT&T  United Health Group (UHG)  Verilogue  Amazon  Expeditors  Syntel  SalesForce  Cornerstone OnDemand  Expedia  OLA  NSF International  Copper Mobile  Think Future Technologies  MorphoTrust  Global Healthcare  Prodigious  Internet Brands  SciQuest  arvato Systems  iCIMS  Ideas2IT  virtusa polaris  Vitech Systems  Cognizant (CTS)  Speridian Technologies  Ojas Innovative Technologies  SWC Technology Partners  Cricbuzz  Jean Martin  Capgemini  Virtusa  ECI Telecom   Aptify   Crossover  ample softech  Metanoia software solutions  Overstock.com  Unic Sol India  Experis India  Intellect Design Arena  Sarathi Softech  Transorg Analytics  Cibersites India  Resource Weaver  Indium Software  Kone Elevator  Merkur Gaming  Prama Hikvision  Gurucul Solutions  e-Zest Solutions  ReadMind Info Services      basic        frequent


 Q3. What is comparator interface used for ?Core Java
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Ans. The purpose of comparator interface is to compare objects of the same class to identify the sorting order. Sorted Collection Classes ( TreeSet, TreeMap ) have been designed such to look for this method to identify the sorting order, that is why class need to implement Comparator interface to qualify its objects to be part of Sorted Collections.

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   Like      Discuss      Correct / Improve     java   collections   treemap   treeset   comparator     ZapCom  Verilogue      Intermediate

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Frequently asked.
 Q4. When does the finally block gets executed ?Core Java2016-10-31 09:29:10

Ans. A finally block of code always executes, whether or not an exception has occurred.The only time finally won't be called is if you call System.exit() or if the JVM crashes first.

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   Like      Discuss      Correct / Improve     finally  exception handling  exceptions     Verilogue  Model N  CA Technologies  Mindteck      basic        frequent


Frequently asked at HCL Technologies ( Based on 3 feedback )
  Q5. Difference between Checked and Unchecked exceptions ?Core Java
Anonymous
Ans. Checked exceptions are the exceptions for which compiler throws an errors if they are not checked whereas unchecked exceptions are caught during run time only and hence can't be checked.

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   Like      Discuss      Correct / Improve     java   exceptions   checked exceptions   unchecked exceptions   exception handling   basic interview question     Verilogue  F5 Network  Pegasystems  PegaSystems  SAP  Ciber  Conde Nast  Pramati Technologies  IBM  JP Morgan  HCL Technologies  Tata Consultancy (TCS)  Cognizant (CTS)  Cogent Infotech  MarketAxess  defense group  NETS INTERNATIONAL  Accenture  Integra Micro  ColdLight Solutions  Endeavor  Deloitte  Infosys  Jean Martin  Symantec  Ancestry  Overstock.com  Adobe  Ultimo  CRIF  Sapeins  Flexera  Sofi  Morgan Stanley  Barclays      basic        frequent

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Frequently asked in CTS ( Based on 2 feedback )
  Q6. What is the difference between comparable and comparator in java.util pkg?Core Java
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Ans. Comparable interface is used for single sequence sorting i.e.sorting the objects based on single data member where as comparator interface is used to sort the object based on multiple data members.

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   Like      Discuss      Correct / Improve     java   java.util   comparable   comparator   collections     Verilogue  Accenture  Varian Medical Systems  L&T Infotech  Oracle  eIntern  Happiest Minds Technologies  HCL Technologies  Cognizant (CTS)  Cerner  Coviam  EdgeVerve Systems  Virtusa Polaris  Trimax IT Infrastructure & Services  Xpanxion  Appy Pie  WealthFront  Varian Medical Systems  Bristlecone  Verilogue  Guavus  eClinicalWorks      basic        frequent


  Q7. What is Comparable Interface?Core Java
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Ans. It is used to sort collections and arrays of objects using the collections.sort() and java.utils. The objects of the class implementing the Comparable interface can be ordered.

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   Like      Discuss      Correct / Improve     java   collections   comparable interface     innoPath  Mobisoft Infotech  BNP Paribas  Nokia  Unicon  HERE Maps  Verilogue      intermediate        frequent

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  Q8. What is the use of HashCode in objects ?Core Java
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Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc.

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   Like      Discuss      Correct / Improve     java   string   hashcode   hash code   string comparison  hashtable     Verilogue  Deutche bank  Kasmo Cloud Solutions   Collabera  Virtusa Consulting  CenturyLink  HCL Technologies  Tata Consultancy (TCS)  Accenture  Polaris  Amdocs  Cognizant (CTS)  IBM  nagarvision   Synechron  Global Logic      basic        frequent


Very Frequently asked. Favorite question in walkins and telephonic interviews. Usually among first few questions. Asked in different variants. Must know for intermediate and expert professionals.Among Top 10 frequently asked questions.
  Q9. What is rule regarding overriding equals and hashCode method ?Core Java
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Ans. A Class must override the hashCode method if its overriding the equals method.

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   Like      Discuss      Correct / Improve     java   collections   hashcode  hash code   equals   collections     Cognizant (CTS)  CapitalOne  Tata Consultancy (TCS)  HCL Technologies  Deloitte  Wipro  Infosys  Sabre  Sophos   Tieto  Addteq  Priceline.com  Cisco Systems  Visa Inc  Vibrant Media  Audience Science  GT Nexus  OpenCrowd  Instinet  Kronos  Elsevier  IMC Financial  LG Mobile  Dun & Bradstreet  WBUT  codecentric  Satmetrix  Interactive Brokers  Roposo  SecureView  Azuga  Envestnet  Criteo  Skillz  MobileIron  Walmart  R Systems  Overstock.com  Verilogue  Goldstone Technologies  FatWire  LinkedIn  Southwest Airlines  Crossover for Work      intermediate        frequent

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 Q10. What are the fail safe systems ?Operating System2016-06-09 09:29:43

Ans. Fail Safe systems are tolerant systems that continue processing even if they sense any problem. the objective here is to continue with the processing even if there are some problems instead of completely shutting it down. Example could be to catch an exception and still letting it complete with partial results.

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   Like      Discuss      Correct / Improve     fail safe systems   system design   exception handling     Verilogue


 Q11. What are the fail fast systems ?2016-06-09 09:31:27

Ans. Fail fast systems are intolerant systems that fails at the first instance of smelling any problem. The objective here is to break the system instead of continuing with the possibly flawed processing. Example could be breaking the processing upon an exception.

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   Like      Discuss      Correct / Improve     fail fast systems   system design     Verilogue




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