Birlasoft Interview Questions, Process, and Tips

Q1. Why String is immutable
Ans. 
String is immutable in Java to ensure thread safety, security, and optimization.
• Immutable strings are thread-safe as they cannot be modified concurrently by multiple threads.

• Immutable strings prevent security vulnerabilities like SQL injection attacks.

• Immutable strings allow for string interning, reducing memory usage and improving performance.
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Q2. Working of Hashmap
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HashMap is a data structure in Java that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap uses hashing to store and retrieve key-value pairs efficiently.

• Keys in a HashMap must be unique, but values can be duplicated.

• HashMap allows for null keys and null values.

• Example: HashMap map = new HashMap<>(); map.put("apple", 5); int value = map.get("apple");
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Q1. Expected package
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Q2. Expected work location
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Q1. Working of Hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap uses hashing to store and retrieve key-value pairs.

• Keys must be unique but values can be duplicated.

• HashMap allows for null keys and null values.

• Example: HashMap map = new HashMap<>(); map.put("key1", 1); int value = map.get("key1");
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Q2. Why String is immutable
Ans. 
String is immutable in Java to ensure thread safety, security, and optimization.
• Immutable strings are thread-safe as they cannot be modified concurrently by multiple threads.

• Immutable strings prevent security vulnerabilities like SQL injection attacks.

• Immutable strings allow for string interning, reducing memory usage and improving performance.
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Q1. Expected Salary
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Q2. Expected location
Ans. 
The expected location refers to where the candidate is willing to work or relocate for the job.
• Be honest about your preferred location and willingness to relocate if necessary.

• Consider mentioning specific cities or regions you are interested in.

• Highlight any factors that may influence your decision, such as family or personal preferences.
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Q1. Exposure with program management
Ans. 
I have extensive exposure with program management in previous roles.
• Led cross-functional teams to successfully deliver projects on time and within budget

• Developed and implemented project plans, timelines, and milestones

• Utilized project management tools such as Jira and Trello to track progress and communicate with stakeholders
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Q2. Exposure with IT INFRAP
Ans. 
Exposure with IT INFRAP refers to experience with IT infrastructure such as servers, networks, and storage systems.
• Experience with setting up and maintaining servers

• Knowledge of networking protocols and configurations

• Familiarity with storage systems like SAN and NAS

• Understanding of virtualization technologies like VMware or Hyper-V
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Q1. Basic questions regarding cloud
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Q2. Which services are used in the cloud
Ans. 
Various services like compute, storage, networking, databases, analytics, AI/ML, IoT, and more are used in the cloud.
• Compute services (e.g. AWS EC2, Azure Virtual Machines)

• Storage services (e.g. AWS S3, Google Cloud Storage)

• Networking services (e.g. AWS VPC, Azure Virtual Network)

• Database services (e.g. AWS RDS, Azure SQL Database)

• Analytics services (e.g. AWS Redshift, Google BigQuery)

• AI/ML services (e.g. AWS SageMaker...read more
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Q3. Describe the services
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Q4. Validate the actually, does he/she worked on that technologies
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Cloud Automation Security Terraform

Q1. Salary discussion
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