Saksoft Interview Questions and Answers

Q1. Hashmap working
Ans. 
Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• Hashmap uses a hashing function to map keys to indices in an array.

• It allows for constant time complexity O(1) for insertion, deletion, and retrieval operations.

• Example: HashMap map = new HashMap<>(); map.put("key", 1); int value = map.get("key");
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Q2. String and string buffer difference
Ans. 
String is immutable, while StringBuffer is mutable in Java.
• String is immutable, meaning once created, it cannot be changed. StringBuffer is mutable and can be modified.

• StringBuffer is synchronized, making it thread-safe. String is not synchronized.

• StringBuffer is more efficient for concatenating multiple strings due to its mutable nature.

• Example: String str = "Hello"; StringBuffer sb = new StringBuffer("Hello");
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Q1. Core java and java 8
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Find Arrays in prime numbers and sorting arrays

Q1. Peformance tunning in SQL store procedures
Ans. 
Performance tuning in SQL store procedures involves optimizing the code to improve execution speed and efficiency.
• Identify and eliminate unnecessary code

• Use appropriate indexing to speed up data retrieval

• Avoid using cursors and loops whenever possible

• Optimize query execution plan

• Consider using stored procedures for frequently executed queries
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Q2. Index optimization in sql server
Ans. 
Index optimization in SQL Server involves creating, maintaining, and optimizing indexes to improve query performance.
• Identify and create indexes on columns frequently used in WHERE clauses

• Regularly update statistics to ensure the query optimizer has accurate information

• Consider using included columns to cover queries that require additional columns not in the index key columns

• Avoid over-indexing as it can lead to decre...read more
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Q3. Sql Exexution Plan and Query Analyzer
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Q4. Role of SQL Profiler
Ans. 
SQL Profiler is a tool used to monitor and capture SQL Server events and performance data.
• SQL Profiler helps in identifying and troubleshooting performance issues in SQL Server.

• It captures events like queries, stored procedures, errors, and more.

• Allows users to analyze the captured data to optimize database performance.

• Can be used to trace and monitor specific activities in real-time.

• Helps in identifying slow queries a...read more
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Q5. What are temp tables. Diff bet temp tables and CTE
Ans. 
Temp tables are temporary tables used to store intermediate results, while CTEs are temporary result sets defined within a query.
• Temp tables are physical tables that are created in the tempdb database and can be used multiple times within a session.

• CTEs (Common Table Expressions) are temporary result sets that are defined within a query and can only be referenced within that query.

• Temp tables persist until they are exp...read more
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Q1. Introduce yourself?and and some important questions?
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Q2. What is your work?
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Q3. What is your additional skill?
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Q4. What is your your other skill in language?
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Q1. Soc , ips ids firewall
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Q2. EMF point security questions
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Q1. This was an MBA campus interview. So the questions were focused on what was my understanding of sales, stakeholder Management etc was.
Ans. I answered about the importance of cultivating a good client relationship in order to deepen the engagement and the use of continuous feedback to ensure client satisfaction
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