Wissen Technology Interview Questions, Process, and Tips

Q1. Tell me about yourself
Ans. 
I am a dedicated and experienced MIS Executive with a strong background in data analysis and reporting.
• Over 5 years of experience in managing and analyzing data for decision-making purposes

• Proficient in using various MIS tools and software such as Excel, SQL, and Tableau

• Strong communication skills to effectively collaborate with cross-functional teams

• Proven track record of improving operational efficiency through data-
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Q1. What is lifecycle hook of Angular
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Lifecycle hooks in Angular are methods that allow you to tap into the lifecycle of a component or directive.
• Lifecycle hooks include ngOnInit, ngOnChanges, ngDoCheck, ngOnDestroy, etc.

• ngOnInit is used to initialize data in a component after Angular has initialized the component.

• ngOnChanges is called when the input properties of a component change.

• ngDoCheck is used for detecting and acting on changes that Angular doesn't...read more
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2 dsa questions and 1 sql question in hackerearth.

Q1. Asked to check pallindrome or noit
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Q2. Design a deck of card and tell who is the higher bidder
Ans. 
Design a deck of cards and determine the higher bidder
• Design a deck of 52 cards with 4 suits (hearts, diamonds, clubs, spades) and 13 ranks (2-10, J, Q, K, A)

• Assign a value to each rank (e.g. 2 = 2, 3 = 3, ..., J = 11, Q = 12, K = 13, A = 14)

• Determine the higher bidder based on the rules of the game being played (e.g. highest card wins, poker hand rankings, etc.)
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Medium to hard question

Q1. Core java and dsa algorithm
Ans. 
Core Java is a fundamental programming language used for developing software applications. DSA algorithms are essential for efficient problem-solving.
• Core Java is used for developing software applications and is based on the Java programming language.

• DSA algorithms are data structures and algorithms used for efficient problem-solving.

• Examples of DSA algorithms include sorting algorithms like Bubble Sort and searching a
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Q1. Core java and dsa problems
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Q1. Dsa problems and system design
Ans. 
DSA problems involve solving algorithmic challenges, while system design involves designing scalable and efficient software systems.
• Practice solving DSA problems on platforms like LeetCode, HackerRank, or CodeSignal.

• Study common data structures and algorithms like arrays, linked lists, trees, sorting algorithms, and searching algorithms.

• For system design, focus on scalability, reliability, performance, and maintainabil...read more
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Questions related to HashMap and it's internal working and medium level difficulty DSA questions

Q1. Spark Scala Questions
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Q2. SQL window function question
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Q1. Advanced Spark Scala Question
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Q2. SQL + Python Question
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Q1. Python Questions with an optimized solution
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Q2. More to the basics of DSA
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