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I applied via Approached by Company and was interviewed in Aug 2023. There was 1 interview round.
I appeared for an interview before Apr 2024, where I was asked the following questions.
I applied via Naukri.com and was interviewed before Mar 2020. There were 4 interview rounds.
Hashtable is synchronized while hashmap is not.
Hashtable is thread-safe while hashmap is not.
Hashtable does not allow null keys or values while hashmap allows one null key and multiple null values.
Hashtable is slower than hashmap due to synchronization.
Hashtable is a legacy class while hashmap is a newer implementation.
Hashmap is not thread-safe while Concurrent Hashmap is thread-safe.
Hashmap is not suitable for multi-threaded environments as it can lead to race conditions and data inconsistencies.
Concurrent Hashmap allows multiple threads to access and modify the map concurrently without any data inconsistencies.
Concurrent Hashmap uses a technique called lock striping to achieve thread-safety.
Concurrent Hashmap is slower than Hashma...
posted on 10 Nov 2021
Filters in Tableau and SQL are used to narrow down data based on specific criteria.
Filters in Tableau can be applied to individual worksheets or the entire dashboard
SQL filters can be applied using the WHERE clause
Tableau filters can be based on dimensions or measures
SQL filters can be based on any column in the table
Tableau filters can be interactive, allowing users to adjust the criteria
SQL filters can be combined wi
I applied via Company Website and was interviewed before May 2021. There were 5 interview rounds.
Online test with questions from probability and reasoning
A case study for which we need to create a dashboard and a power point presentation.
SQL written test
I applied via Campus Placement and was interviewed in May 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed before Apr 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed in Dec 2020. There were 3 interview rounds.
posted on 20 Jun 2021
I applied via Campus Placement and was interviewed in May 2021. There was 1 interview round.
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