Which of the following is NOT a type of COMSEC equipment?

The correct choice identifies the wireless router as not being a type of COMSEC equipment. COMSEC, or Communications Security, encompasses a variety of tools and practices designed to protect sensitive communication from unauthorized access or interception.

COMSEC equipment typically includes devices specifically designed for secure communications, such as cryptographic devices and systems that encrypt or decrypt information. Crypto-ancillary devices support cryptographic operations, while crypto-production refers to equipment used to generate cryptographic keys. The term 'crypto' itself usually refers to all aspects of cryptography, including the devices as a whole.

In contrast, a wireless router primarily serves as a networking device to connect different devices to a local area network (LAN) and facilitate access to the internet. While it may have security measures, such as encryption protocols, its main function is not specifically focused on cryptographic security. Therefore, it does not fit within the category of COMSEC equipment, which is dedicated solely to protecting communications through encrypted methods and related technologies.