The Arista 7500E series is a modular switch platform designed for large-scale cloud and data center environments. It meets all the specified criteria: it is built on a 100% efficient, non-blocking, cell-based fabric architecture. A core feature of its design is Virtual Output Queuing (VOQ) to eliminate head-of-line blocking and ensure lossless performance under congestion. The 7500 platform, which includes the 7500E chassis and compatible line cards (such as the 7500R series), supports line cards that meet and exceed the 3.84 Tbps per-slot capacity requirement, making it the only suitable choice among the options for such a high-performance, large-scale deployment.

A. 7010T: This is a fixed-configuration 1RU switch. It is not a modular chassis and does not have a cell-based fabric or the concept of per-slot capacity.

C. 7300: While the 7300 series is a modular chassis with VOQ, its highest-performing line cards typically offer capacity just below the specified 3.84 Tbps per slot.

D. 7150: This is a fixed-configuration 1RU switch optimized for ultra-low latency. It is not a modular chassis and lacks the specified fabric architecture and scale.

1. Arista 7500E Series Data Sheet: In the "Product Overview," the 7500E is described as a "modular chassis" for "high density data centers." The "Arista EOS" section on page 2 explicitly mentions the "Virtual Output Queue (VOQ) architecture" that "eliminates head-of-line (HOL) blocking."

2. Arista 7500R Series Data Sheet: This document details line cards compatible with the 7500E chassis. The "Product Overview" on page 1 highlights the VOQ architecture. The line card table on page 2 lists modules like the 7500R2-36CQ, which provides 3.6 Tbps of forwarding, demonstrating the platform's ability to meet the high-capacity requirement.

3. Arista 7300X3 and 7320X Series Data Sheet: The line card specifications table on page 2 shows the highest capacity line card, the 7320X-32C, offering "6.4Tbps" of full-duplex throughput, which corresponds to 3.2 Tbps in one direction, falling short of the 3.84 Tbps requirement.

4. Arista Networks, EOS Central - VOQ and Virtual Output Queues: This official documentation explains, "Arista’s 7500, 7300 and 7280R platforms are all VOQ systems... In a VOQ system, there is no head of line blocking." This confirms that both 7500 and 7300 series use VOQ, making the performance per slot the key differentiator in the question.