IBM Senior Technical Service Specialist Interview Questions and Answers

Any topic we can choose and just speak in front of the fellow candidates

Q1. Difference between ram and rom
Ans. 
RAM is volatile memory used for temporary storage, while ROM is non-volatile memory used for permanent storage.
• RAM stands for Random Access Memory, used for temporary storage of data and program instructions

• ROM stands for Read-Only Memory, used for permanent storage of data and program instructions

• RAM is volatile, meaning data is lost when power is turned off

• ROM is non-volatile, meaning data is retained even when power
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Q2. What do you know about cloud computing
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Cloud computing is the delivery of computing services over the internet, including storage, servers, databases, networking, software, and analytics.
• Cloud computing allows users to access and use resources on-demand without the need for physical infrastructure.

• It offers scalability, flexibility, cost-effectiveness, and increased efficiency.

• Examples of cloud computing services include Amazon Web Services (AWS), Microsoft
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Q3. What is network
Ans. 
A network is a collection of computers, servers, mainframes, network devices, and other devices connected to one another to share data and resources.
• Networks can be wired or wireless

• They can be local (LAN), wide (WAN), or global (Internet)

• Networks use protocols like TCP/IP to communicate

• Examples include Ethernet, Wi-Fi, and cellular networks
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Q4. What are mentioned in job description and what do you understand about the role mentioned in JD
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Q5. What is IP and how IP address is represented
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IP stands for Internet Protocol. An IP address is a unique numerical label assigned to each device connected to a computer network.
• IP stands for Internet Protocol

• IP address is a unique numerical label assigned to devices on a network

• IP addresses are represented in decimal format, such as 192.168.1.1

• There are two versions of IP addresses - IPv4 and IPv6
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Q1. KNOW ALL aboyt linux and database
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Any topic we can choose in internet

Q1. What is ip address
Ans. 
An IP address is a unique numerical label assigned to each device connected to a computer network.
• IP address stands for Internet Protocol address

• It is used to identify and locate devices on a network

• There are two types of IP addresses - IPv4 and IPv6

• Example of IPv4 address: 192.168.1.1

• Example of IPv6 address: 2001:0db8:85a3:0000:0000:8a2e:0370:7334
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Q2. What are the layers of tcp
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TCP has four layers: Application, Transport, Internet, and Network Interface.
• Application layer: Responsible for interacting with the user and providing network services.

• Transport layer: Manages end-to-end communication and ensures data delivery.

• Internet layer: Handles routing of data packets between networks.

• Network Interface layer: Deals with the physical connection to the network.
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Q1. Sorting array based on streams in java8, concurrent api changes in java8, optional class, functional interface. Lamba. Comparable vs comparator
Ans. 
Answering questions on Java 8 features such as streams, concurrent API, optional class, functional interface, lambda, and comparable vs comparator.
• Java 8 streams can be used to sort arrays based on specific criteria

• Concurrent API in Java 8 allows for parallel processing of data

• Optional class is used to handle null values in a more efficient way

• Functional interfaces are interfaces with only one abstract method, used for...read more
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Q1. Scenarios based solutions to problems and java8, exception, immutable class and spring boot annotations
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Q1. About atos. Why atos and previous projects i worked on.
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Q1. Mostly on VMWare vRA/vRO and devOps
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Q1. Mostly about myself and Team management skills
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Q1. Expectations and Work commitments
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Q1. What and why IOC Container in spring
Ans. 
IOC Container is a core feature of Spring Framework that manages the dependencies between objects.
• IOC stands for Inversion of Control

• It is used to achieve loose coupling between objects

• It allows objects to be created and wired together by an external framework

• It reduces the amount of code needed for configuration and maintenance

• Examples of IOC Containers in Spring are ApplicationContext and BeanFactory
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Q2. Why we use @Value in spring boot
Ans. 
We use @Value in Spring Boot to inject values from properties files or environment variables.
• Allows for external configuration of application properties

• Values can be injected from properties files or environment variables

• Can be used to inject values into fields, constructors, or methods

• Example: @Value("${my.property}") private String myProperty;
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Q3. Difference between SQL and Non-SQL database
Ans. 
SQL databases are relational and use structured data, while NoSQL databases are non-relational and use unstructured data.
• SQL databases use tables with predefined schema, while NoSQL databases use documents, key-value pairs, or graphs.

• SQL databases are better for complex queries and data analysis, while NoSQL databases are better for scalability and flexibility.

• Examples of SQL databases include MySQL, Oracle, and Postgr...read more
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Q4. Give real time scenario where have you used abstract class and interface
Ans. 
Abstract classes and interfaces are used to achieve abstraction and provide a blueprint for classes to implement.
• Used abstract class to create a base class for different types of vehicles, with common properties and methods.

• Used interface to define a contract for different payment methods, with each method implementing its own logic.

• Abstract classes are used when we want to provide a default implementation for some met...read more
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Q5. How did you handle authentication and authorization in project
Ans. 
Authentication and authorization were handled using a combination of technologies and protocols.
• Used OAuth 2.0 for authentication

• Implemented role-based access control for authorization

• Stored user credentials securely using bcrypt hashing algorithm

• Used JSON Web Tokens (JWT) for session management

• Implemented two-factor authentication for sensitive operations
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Q6. How will you encrypt customer information including SSN and others
Ans. 
Customer information will be encrypted using industry-standard encryption algorithms and stored securely.
• Use industry-standard encryption algorithms such as AES or RSA

• Ensure that encryption keys are securely stored and managed

• Implement secure storage mechanisms such as hashing and salting

• Regularly review and update encryption protocols to ensure they remain secure
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Q7. Why Serialization used
Ans. 
Serialization is used to convert complex data structures into a format that can be easily transmitted or stored.
• Serialization allows data to be sent over a network or saved to a file.

• It enables objects to be stored in a database or memory.

• Serialization is used in web services, messaging systems, and distributed computing.

• Examples include JSON, XML, and binary formats like Protocol Buffers and Apache Avro.
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Q8. Do you have any experience with Jenkins and Cloud Deployement
Ans. 
Yes, I have experience with Jenkins and Cloud Deployment.
• I have used Jenkins for continuous integration and continuous deployment.

• I have experience with setting up Jenkins pipelines for automated deployment.

• I have worked with cloud platforms like AWS and Azure for deploying applications.

• I have used tools like Ansible and Terraform for infrastructure automation.

• I have experience with containerization using Docker and Ku...read more
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Q9. Have you used Logging mechanism
Ans. 
Yes, logging is an essential part of software development.
• Logging helps in debugging and troubleshooting issues.

• It provides a record of events and actions taken by the system.

• It helps in monitoring system performance and identifying bottlenecks.

• Examples of logging mechanisms include log4j, syslog, and ELK stack.
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