Infosys Interview Questions, Process, and Tips

To create an IPsec tunnel, configure the necessary parameters on both ends of the connection.

• Configure the IPsec parameters such as encryption algorithms, authentication methods, and key exchange protocols on both the source and destination devices.

• Establish a secure communication channel by setting up the IPsec tunnel between the two endpoints.

• Ensure that the IPsec tunnel is properly configured and tested for secure d...read more

To troubleshoot an IPsec tunnel, check configurations, verify connectivity, monitor logs, and use packet capture tools.

• Check the IPsec configuration on both ends to ensure they match

• Verify that the tunnel endpoints can reach each other

• Monitor logs on both devices for any error messages related to the tunnel

• Use packet capture tools like Wireshark to analyze traffic going through the tunnel

SSL VPN allows remote users to securely access the network from any location.

• SSL VPN uses encryption to secure the connection between the remote user and the network.

• It authenticates users before granting access to resources.

• SSL VPN can be set up using a web browser or a client application.

• It provides a secure way for remote employees to access company resources.

• SSL VPN can be configured to restrict access based on use

Configuring IPsec tunnel for 3 different locations and explaining traffic flow

• Configure IPsec tunnel on routers/firewalls at each location

• Set up IPsec policies for encryption and authentication

• Define IPsec tunnel endpoints and establish secure communication

• Ensure proper routing between locations for traffic flow

• Monitor and troubleshoot the IPsec tunnel for any issues

To upgrade to Palo Alto firewall and Fortigate, follow these steps: plan the upgrade, backup configurations, test the upgrade in a lab environment, schedule downtime, perform the upgrade, test functionality post-upgrade.

• Plan the upgrade by determining the current firewall configurations and requirements for the new firewalls.

• Backup configurations of the existing firewalls to ensure data safety in case of any issues dur...read more

To troubleshoot both locations IPsec tunnel being down, check configurations, network connectivity, and security policies.

• Check the IPsec configurations on both ends to ensure they match

• Verify network connectivity between the two locations

• Check firewall and security policies to ensure they are not blocking the IPsec traffic

• Review logs on both ends for any error messages or indications of the issue

• Restart the IPsec serv

A functional predicate is a function that returns a boolean value based on input parameters.

• Functional predicates are commonly used in programming to filter or sort data based on specific criteria.

• They are often used in higher-order functions like filter, map, and reduce.

• For example, a functional predicate could be used to check if a number is even or odd.

• Another example could be a predicate that checks if a string con

Implementing logging functionality is optional in code

• Implementing logging can help in debugging and monitoring the application

• Use logging frameworks like Log4j or SLF4J to easily add logging to code

• Example: Adding log statements before and after critical operations

Delete, drop, and truncate are SQL commands used to remove data from a table. Truncate can't be rollbacked.

• DELETE command is used to remove specific rows from a table

• DROP command is used to remove an entire table from the database

• TRUNCATE command is used to remove all rows from a table

• DELETE can be rollbacked using a transaction, while TRUNCATE cannot be rollbacked

To print something on browser using Spring Boot, you can create a controller method that returns a view or a response entity.

• Create a controller class with a method that returns a view or a response entity

• Use Thymeleaf or other template engine to render HTML views

• Return a response entity with the content type set to text/html for plain text output

Agile ceremonies are regular meetings or events held within an agile framework to facilitate communication, collaboration, and alignment among team members.

• Sprint Planning: Meeting at the start of a sprint to plan the work to be done.

• Daily Stand-up: Short daily meeting for team members to discuss progress and plan for the day.

• Sprint Review: Meeting at the end of a sprint to review and demonstrate the completed work.

• Spr...read more

Yes, I have experience with frontend technologies such as HTML, CSS, and JavaScript, as well as cloud technologies like AWS and Azure.

• Proficient in HTML, CSS, and JavaScript for frontend development

• Experience with cloud technologies such as AWS and Azure

• Familiarity with frontend frameworks like React and Angular

• Knowledge of cloud services like EC2, S3, and Azure Functions

Memory leaks occur when a program allocates memory but does not release it, leading to inefficient memory usage.

• Use tools like profilers to identify memory leaks in Java applications.

• Avoid creating unnecessary objects and ensure proper garbage collection.

• Avoid static references to objects that can prevent them from being garbage collected.

• Close resources like files, database connections, and streams after use to preven

Comparable is an interface used for natural ordering, while Comparator is an interface used for custom ordering.

• Comparable is implemented by the class itself to define the natural ordering of objects.

• Comparator is implemented by a separate class to define custom ordering of objects.

• Example: String class implements Comparable interface for natural ordering, while Collections class uses Comparator for custom sorting.

The company has chosen not to utilize XYZ technology due to budget constraints and compatibility issues.

• Budget constraints may have limited the company's ability to invest in new technologies.

• Compatibility issues with existing systems may have prevented the adoption of XYZ technology.

• The company may have determined that the benefits of XYZ technology do not outweigh the costs of implementation.

• There may be alternative ...read more