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Hash tables are data structures that store key-value pairs for efficient retrieval.
Hash tables use a hash function to map keys to indexes in an array.
They have constant time complexity for insertion, deletion, and lookup operations.
Collisions can occur when multiple keys hash to the same index, which can be resolved using techniques like chaining or open addressing.
I applied via Walk-in and was interviewed in Nov 2023. There was 1 interview round.
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I applied via LinkedIn and was interviewed in Nov 2022. There were 4 interview rounds.
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 includ...
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...
I applied via Company Website and was interviewed in Oct 2022. There were 3 interview rounds.
The discussion is about the benefits and drawbacks of artificial intelligence and UPI payments.
I was interviewed before Dec 2022.
I applied via LinkedIn and was interviewed before Apr 2023. There were 3 interview rounds.
Java Collections - Hash map and Hash table.
Stakeholder management and escalation/conflict management.
The duration of AT&T interview process can vary, but typically it takes about less than 2 weeks to complete.
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