Which of the following are types of data centre power supply units (PSUs)?

The correct answer highlights types of data centre power supply units, specifically identifying modular power supplies and uninterruptible power supplies (UPS).

Modular power supplies are designed to be flexible and scalable, allowing data centres to adapt their power supply configurations based on specific requirements. This modularity means components can be added or replaced easily, enhancing efficiency and redundancy. Such a feature is crucial in environments where uptime and reliability are paramount.

Uninterruptible power supplies are crucial for any data centre, providing immediate backup power in case of outages or power fluctuations. They ensure that critical systems remain operational and protect against data loss, hardware damage, and service interruptions by storing energy that can be swiftly utilized when needed.

Other options do not primarily represent standard power supply units used specifically within data centres. Solar power supplies and battery chargers, for instance, are typically not part of core data centre infrastructure, even though they can be used for powering specific devices or adding renewable energy sources. Standard wall outlets and generators may serve a general purpose but do not directly categorize as power supply units for data centre applications. Lastly, portable chargers and power banks are consumer products and do not meet data centre operational standards or scale.