SNMP packets are transmitted by UDP.

The Simple Network Management Protocol (SNMP) is an application layer protocol that primarily uses the User Datagram Protocol (UDP) as its transport layer protocol. SNMP messages (like GetRequest, GetResponse, SetRequest) are typically sent over UDP port 161, and SNMP trap messages are sent to UDP port 162. UDP is used because it is connectionless and lightweight, which is suitable for network management queries that prioritize speed over guaranteed delivery.

The statement "False" is incorrect because the standard and most widespread implementation of SNMP, as defined in its core RFCs, specifies UDP as the transport protocol. While transport over TCP is possible, UDP is the default and dominant method.

1. Huawei HCIA-Datacom V1.0 Training Material. (2020). Section 8.1.1 Network Management and O&M - SNMP. "SNMP uses UDP to transmit messages. The NMS communicates with the agent through port 161. The agent sends traps to the NMS through port 162."

2. Case, J., Fedor, M., Schoffstall, M., & Davin, J. (1990). RFC 1157: A Simple Network Management Protocol (SNMP). IETF. Section 4, "Protocol Specification". "An SNMP message is transported via the User Datagram Protocol."