What types of pairs are available for 210 blocks?

The 210 block is a type of telecommunications block commonly used in networking and telephony systems. It is designed to accommodate various pair configurations that correspond to different wiring capacities suited for specific applications. The options for pairs that can be terminated on 210 blocks typically include 64, 128, and 192 pairs.

This means the correct answer encompasses the pair types that a 210 block primarily supports within typical industry standards. The configuration reflects the common deployment in both commercial and residential applications, allowing for efficient connection management and organization of telecommunications lines.

Other options do not align with the standard pair capacities that 210 blocks are designed to handle. For example, pairs like 32 or 50 are not typical configurations associated with this type of block, as they either do not match the capacity or are related to different types of telecommunication blocks. Thus, understanding the design and purpose of the 210 block clarifies why the identified pair configurations are correct.