100+ BT Group Interview Questions and Answers

Find the longest increasing subsequence in an array of integers.

• Use dynamic programming to keep track of the longest increasing subsequence ending at each index.

• Iterate through the array and update the longest increasing subsequence for each index.

• Return the maximum length of the longest increasing subsequence found.

Provision is a liability that is uncertain in timing or amount, while a reserve is a portion of profits set aside for specific purposes.

• Provision is a liability that is recognized based on estimates, such as bad debt provision.

• Reserve is a part of profits that is retained for specific purposes, like a contingency reserve.

• Provisions are recorded on the balance sheet, while reserves are shown in the equity section.

• Provisions are usually temporary in nature, while reserves are m...read more

Exposure to directory services is essential for managing user accounts and permissions in a network environment.

• Experience with LDAP (Lightweight Directory Access Protocol)

• Knowledge of Active Directory for Windows environments

• Understanding of directory service concepts like users, groups, and permissions

• Ability to troubleshoot directory service issues

• Experience with directory service integration in applications

Spring AOP (Aspect-Oriented Programming) is a framework that provides cross-cutting concerns in a modular way.

• Spring AOP enables separation of concerns by allowing the definition of aspects (cross-cutting concerns) separate from the main application logic.

• It allows developers to apply aspects to multiple classes without modifying the actual code of those classes.

• Examples of cross-cutting concerns that can be addressed using Spring AOP include logging, security, transaction ma...read more

IAM stands for Identity and Access Management, involves managing user identities and their access to resources.

• IAM involves managing user identities, roles, and permissions within a system.

• It helps ensure that only authorized users have access to specific resources.

• IAM solutions often include features like single sign-on, multi-factor authentication, and role-based access control.

• Examples of IAM tools include AWS IAM, Azure Active Directory, and Okta.

• Experience with implement...read more

Changes type refers to the ability to adapt to new situations and environments.

• Adaptability to new roles and responsibilities

• Flexibility in handling unexpected challenges

• Openness to learning new skills and technologies