30+ Sykes Business Services Of India Interview Questions and Answers

Router and filter transformations are used in Informatica for data filtering, but they have different functionalities.

• Router transformation is used to route data based on specified conditions to multiple output groups.

• Filter transformation is used to filter rows based on specified conditions and pass only the matching rows to the output.

• Router transformation can have multiple output groups, each with its own condition.

• Filter transformation has a single output group.

• Router tra...read more

Duplicates in mappings can be handled using various techniques in Informatica.

• Use the Sorter transformation to sort the data and then use the Aggregator transformation to eliminate duplicates.

• Use the Expression transformation with the DISTINCT keyword to remove duplicates.

• Use the Rank transformation to rank the data and then filter out the duplicates based on the rank.

• Use the Lookup transformation to check for duplicates in a reference table and filter them out.

• Use the Update...read more

Lookups in Informatica are used to retrieve data from a reference table based on a matching condition.

• Lookups are used to perform data transformations and enrich the data in a mapping.

• There are three types of lookups in Informatica: Connected, Unconnected, and Static.

• Connected lookup returns multiple rows and can be used in any transformation.

• Unconnected lookup returns a single value and is used in expressions or transformations.

• Static lookup is used to retrieve a single row ...read more

The phases of site-to-site VPN are the steps involved in establishing and maintaining a secure connection between two networks.

• Phase 1: Authentication and key exchange

• Phase 2: Data encryption and tunnel establishment

• Phase 3: Traffic protection and monitoring

• Each phase has its own set of protocols and processes

• For example, in Phase 1, the VPN peers authenticate each other using methods like pre-shared keys or digital certificates

To select the last 10 lines from a file in Informatica mapping, use the Source Qualifier transformation with a SQL override.

• Add a Source Qualifier transformation to the mapping.

• In the Source Qualifier transformation, specify the file as the source and set the appropriate file properties.

• Write a SQL override in the Source Qualifier transformation to select the last 10 lines from the file.

• Use the ROWNUM pseudocolumn or the ROW_NUMBER() function to order the rows in descending o...read more

Implemented CI/CD integration through Jenkins using pipeline as code approach

• Created a Jenkins pipeline job and defined stages for build, test, and deploy

• Integrated source code management tool like Git with Jenkins

• Used Jenkins plugins like Maven, Docker, and Kubernetes for building, packaging, and deploying the application

• Configured Jenkins to trigger the pipeline on every code commit or merge to the main branch

• Enabled automated testing and code quality checks in the pipeline...read more

The Python code to check if a string starts with 'a' and has 4-8 'd' after that.

• Use the startswith() method to check if the string starts with 'a'.

• Use the count() method to count the occurrences of 'd' in the string.

• Check if the count of 'd' is between 4 and 8 (inclusive).

To find disk usage of a specific directory in Unix, use the 'du' command.

• Open the terminal and navigate to the desired directory

• Run the 'du' command followed by the directory path

• The command will display the disk usage in bytes for each file and subdirectory within the specified directory

• To get the disk usage in human-readable format, use the '-h' option with 'du'

• To sort the output by disk usage, use the '-s' option with 'du'

Cloud computing offers scalability, cost-effectiveness, flexibility, and improved security compared to on-premise datacenters.

• Scalability: Cloud allows easy scaling up or down of resources based on demand.

• Cost-effectiveness: Cloud eliminates the need for upfront hardware and infrastructure investments.

• Flexibility: Cloud enables easy access to data and applications from anywhere, anytime.

• Improved security: Cloud providers offer robust security measures and data backup options....read more

Design an e-commerce app with type ahead search. Provide end to end diagram and scaling.

• Design a user-friendly interface with search bar and type ahead feature

• Create a database schema to store product information

• Implement a search algorithm to retrieve relevant products based on user input

• Use caching and indexing to improve search performance

• Scale the system by adding load balancers, increasing server capacity, and optimizing database queries

I will follow a customer-centric approach and ensure timely and accurate resolution of their queries.

• Listen actively to understand their concerns

• Empathize with their situation

• Provide clear and concise answers

• Offer solutions that meet their needs

• Follow up to ensure their satisfaction

OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• OOP focuses on creating objects that interact with each other to solve complex problems.

• Fundamental concepts include classes, objects, inheritance, encapsulation, and polymorphism.

• Classes are blueprints for creating objects, while objects are instances of classes.

• Inheritance allows classes to inherit attributes and methods from other c...read more

An array is a data structure that stores a collection of elements of the same type. There are different types of arrays such as one-dimensional, multi-dimensional, and associative arrays.

• One-dimensional array: Stores elements in a single row or column.

• Multi-dimensional array: Stores elements in multiple rows and columns.

• Associative array: Uses key-value pairs to store elements.

• Example: ['apple', 'banana', 'orange']

I have extensive experience in performance optimization in SQL.

• Identifying and optimizing slow queries

• Creating and maintaining appropriate indexes

• Using query execution plans to identify bottlenecks

• Optimizing database schema and table design

• Using appropriate data types and constraints

• Caching and data caching techniques

• Partitioning large tables

• Optimizing query parameters and joins

• Using stored procedures and views for performance gains

Authentication and access rights controls are enforced to ensure only authorized users can access sensitive information.

• Authentication verifies the identity of a user before granting access.

• Access rights controls limit the actions a user can perform based on their role or permissions.

• Enforcement can be done through various methods such as passwords, biometrics, and multi-factor authentication.

• Regular audits and reviews of access rights can help identify and prevent unauthoriz...read more

Push down optimization is a technique used in Informatica to improve performance by pushing data transformation operations to the source or target database.

• Push down optimization reduces the amount of data transferred between the source and target systems.

• It allows the database engine to perform transformations, aggregations, and filtering, leveraging its processing power.

• By pushing down operations, Informatica minimizes network latency and improves overall performance.

• Exampl...read more

In a left join, all the rows from the left table are included in the result set, along with matching rows from the right table.

• Left join returns all rows from the left table and the matching rows from the right table

• If there is no match, NULL values are returned for the columns of the right table

• Left join is used to retrieve data from multiple tables based on a related column

To pull large amount of data in Spring Data JPA, use pagination, lazy loading, and query optimization techniques.

• Use pagination to limit the amount of data retrieved in each query

• Implement lazy loading to fetch data only when needed

• Optimize queries by using indexes, avoiding N+1 query problem, and fetching only necessary columns

Yes, I am able to do rotational shifts as required for the job.

• I am flexible with my work schedule and can adapt to different shifts

• I have previous experience working in rotational shifts

• I understand the importance of maintaining network operations 24/7, which may require working different shifts

Garbage collection is an automatic process of freeing up memory by removing unused objects.

• Java uses a mark-and-sweep algorithm for garbage collection

• Objects that are no longer referenced are marked for deletion

• The garbage collector runs periodically to remove the marked objects

• Finalize() method can be used to perform cleanup operations before an object is deleted

I would listen to their concerns, empathize with their situation, apologize for any inconvenience caused, and offer a solution to their problem.

• Remain calm and professional

• Listen actively to the customer's complaint

• Empathize with their situation and apologize for any inconvenience caused

• Offer a solution to their problem, and if necessary, escalate the issue to a supervisor

• Follow up with the customer to ensure their issue has been resolved

Azure hosted AKS is a managed Kubernetes service that simplifies deployment and management of containerized applications.

• AKS stands for Azure Kubernetes Service

• AKS is a fully managed Kubernetes container orchestration service

• AKS automates the deployment, scaling, and management of containerized applications

• AKS integrates with other Azure services such as Azure Active Directory, Azure Monitor, and Azure Container Registry

• AKS supports both Linux and Windows containers

Implementing cloud security controls involves identifying risks, selecting appropriate controls, and monitoring their effectiveness.

• Conduct a risk assessment to identify potential threats and vulnerabilities

• Select appropriate security controls based on the identified risks

• Implement and configure the selected controls

• Regularly monitor and assess the effectiveness of the controls

• Examples of cloud security controls include encryption, access controls, and intrusion detection sys...read more

Hypothesis testing is a statistical method to make inferences about a population based on sample data.

• Hypothesis testing involves formulating a null hypothesis and an alternative hypothesis.

• The p-value is the probability of obtaining a test statistic as extreme as the one observed, assuming the null hypothesis is true.

• Machine learning algorithms are computational models that learn patterns and make predictions from data.

• Python is a popular programming language for data analys...read more

Display duplicate lines from a file in Unix.

• Use the 'sort' command to sort the lines in the file.

• Use the 'uniq' command with the '-d' option to display only the duplicate lines.

• Redirect the output to a new file or display it on the console.

Display the 10th line from a file in Unix.

• Use the 'head' command to display the first 10 lines of the file.

• Then use the 'tail' command to display the last line from the first 10 lines.

• Combine both commands using a pipe ('|') to display the 10th line directly.

My expected CTC is negotiable based on the job responsibilities, company size, and location.

• My expected CTC is based on my experience, skills, and industry standards.

• I am open to discussing the compensation package during the interview process.

• I am looking for a competitive salary that aligns with my qualifications and the market rate.

Using Unix command 'grep' to find a word in a set of files

• Use 'grep' command followed by the word you want to search for and the file(s) you want to search in

• Add the '-r' flag to search recursively in all files in a directory

• Use '-i' flag for case-insensitive search

• Example: grep 'hello' file.txt

• Example: grep -r 'error' /path/to/directory

• Example: grep -i 'apple' file1.txt file2.txt

Static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.

• Static variables are shared among all instances of a class.

• Static methods can be called without creating an object of the class.

• Static keyword can be used to initialize a variable only once.

• Example: public static int count = 0;

AI stands for artificial intelligence, which is the simulation of human intelligence processes by machines.

• AI involves the development of algorithms that can perform tasks typically requiring human intelligence.

• Examples of AI applications include virtual assistants like Siri, self-driving cars, and recommendation systems like Netflix.

• Machine learning is a subset of AI that focuses on the development of algorithms that allow computers to learn from and make predictions or deci...read more

NAT stands for Network Address Translation. It is a technique used to map a public IP address to a private IP address.

• NAT is used to conserve public IP addresses.

• It allows multiple devices to share a single public IP address.

• NAT can be implemented using hardware or software.

• There are three types of NAT: Static NAT, Dynamic NAT, and Port Address Translation (PAT).

BGP stands for Border Gateway Protocol, a routing protocol used to exchange routing information between different networks.

• BGP is used to connect different autonomous systems (AS) on the internet.

• It is a path-vector protocol that selects the best path for data to travel based on various attributes.

• BGP is used by internet service providers (ISPs) to exchange routing information with each other.

• It is a complex protocol that requires careful configuration to ensure proper routin...read more

Kubernetes is a container orchestration platform that manages and automates the deployment, scaling, and management of containerized applications.

• Kubernetes uses a master-slave architecture with a control plane and worker nodes.

• The control plane manages the overall state of the cluster and schedules workloads to the worker nodes.

• Worker nodes run the containers and communicate with the control plane to receive instructions.

• Kubernetes uses declarative configuration files to def...read more

Streams process elements sequentially, while parallel streams process elements concurrently.

• Streams process elements one by one in a sequential manner.

• Parallel streams process elements concurrently, potentially utilizing multiple threads for faster processing.

• Streams are suitable for smaller datasets or when order matters.

• Parallel streams are more efficient for larger datasets or when order is not important.

• Example: Stream processing a list of numbers vs. parallel stream proc...read more

Networking is the practice of connecting devices together to share resources and communicate with each other.

• Networking involves the use of protocols and technologies such as TCP/IP, DNS, DHCP, and VLANs.

• Networks can be wired or wireless, and can span across local or wide areas.

• Networking also includes security measures such as firewalls, VPNs, and encryption.

• Examples of network devices include routers, switches, hubs, and access points.

Cloud project implementation challenges include security concerns, integration issues, and lack of expertise.

• Security concerns related to data privacy and compliance regulations

• Integration issues with existing systems and applications

• Lack of expertise in cloud technologies and best practices

• Cost management and budget constraints

• Data migration and transfer challenges

• Vendor lock-in and interoperability issues

CLR stands for Common Language Runtime, a virtual machine component of the .NET framework responsible for managing code execution.

• CLR provides services such as memory management, exception handling, and security.

• It compiles code into Intermediate Language (IL) and then translates it into machine code at runtime.

• CLR allows for language interoperability within the .NET framework, enabling different languages to work together seamlessly.

Singleton class ensures only one instance of a class is created and provides a global point of access to it.

• Create a private static instance of the class

• Provide a private constructor to prevent instantiation

• Create a public static method to access the instance