Which of the following is true about the Cisco Catalyst 3750 Series switches?

The Cisco Catalyst 3750 Series switches are well-known for their stackable architecture, allowing multiple switches to be connected and managed as a single unit. This stackable design enhances flexibility and scalability, making it easier to expand a network without complicating management processes.

The correct statement emphasizes that these switches can be stacked but do not accommodate line card modules like modular switches, which are typically larger and offer more extensive options for expanding capabilities. The design facilitates high-density port configurations while maintaining a streamlined form factor.

Although options suggesting modular capabilities, layer 2-only operation, or limited high-availability features might present some aspects of the Catalyst 3750's functionality, they do not accurately represent the primary characteristic of stackability. This focus on how switch stacking simplifies networking tasks is what makes this option particularly significant in understanding the Catalyst 3750 Series.