Arista Networks Interview Questions and Answers

Snowflake offers unique architecture with separation of storage and compute, automatic scaling, and support for diverse workloads.

• Snowflake's architecture separates storage and compute, allowing for independent scaling and cost optimization.

• Snowflake automatically handles infrastructure management, reducing the need for manual tuning and maintenance.

• Snowflake supports diverse workloads, including data warehousing, data lakes, and real-time analytics.

• Snowflake's unique multi-c...read more

Snowflake offers multiple layers of security including network security, data encryption, and access control.

• Network security: Snowflake uses Virtual Private Cloud (VPC) peering, IP whitelisting, and multi-factor authentication to secure network communication.

• Data encryption: Snowflake encrypts data at rest and in transit using industry-standard encryption algorithms.

• Access control: Snowflake provides role-based access control, object-level permissions, and auditing capabilit...read more

Snowflake is a cloud-based data warehousing platform with unique features like separation of storage and compute, automatic scaling, and data sharing capabilities.

• Snowflake uses a unique architecture with separate layers for storage, compute, and services, allowing for independent scaling of each component.

• It uses virtual warehouses to separate compute resources, enabling users to scale up or down based on workload requirements.

• Snowflake's data sharing feature allows users to...read more

Time Travel in Snowflake allows users to query historical data as it existed at a specific point in time.

• Time Travel in Snowflake enables users to access and query data as it existed at a specific point in the past.

• It helps in auditing, compliance, and debugging by allowing users to track changes and view historical data.

• Users can specify a timestamp or a statement ID to retrieve data from a specific point in time.

• Time Travel is useful for comparing data at different points i...read more

To set data retention time as 0 in Snowflake, you can use the ALTER TABLE command with the SET option.

• Use ALTER TABLE command with SET option to modify the data retention time to 0.

• Syntax: ALTER TABLE table_name SET DATA_RETENTION_TIME = 0;

• Example: ALTER TABLE sales SET DATA_RETENTION_TIME = 0;

Connectors in Snowflake are used to integrate with various data sources and tools for seamless data loading and querying.

• Snowflake JDBC connector for connecting to Snowflake using Java applications

• Snowflake ODBC connector for connecting to Snowflake using ODBC-compliant applications

• Snowflake Python connector for connecting to Snowflake using Python scripts

• Snowflake Spark connector for integrating Snowflake with Apache Spark for data processing

• Snowflake Kafka connector for str...read more

Migration in Snowflake involves moving data and objects from one environment to another using various methods.

• Use Snowflake's built-in tools like SnowSQL, Snowpipe, and Snowflake Data Migration Service for seamless migration

• Consider factors like data volume, complexity, and downtime requirements when planning migration

• Test the migration process thoroughly to ensure data integrity and consistency

• Monitor the migration progress and performance to identify any issues and optimize...read more

Stages are logical groupings of tasks in a data pipeline, while stored procedures are precompiled SQL code for repeated use.

• Stages are used to organize tasks in a data pipeline, such as extraction, transformation, and loading.

• Stored procedures are precompiled SQL code that can be reused multiple times for efficiency.

• Stages help in managing and monitoring the flow of data through different processing steps.

• Stored procedures can improve performance by reducing the need to send ...read more