SNMP v2c is chosen over other versions primarily for its community string-based security, which, despite being less secure than SNMP v3, offers a simpler configuration process with improved performance over SNMP v1. SNMP v1, while the earliest version, offers lower performance and lacks important bulk retrieval options. SNMP v3 provides stronger security through encryption and authentication methods, but can be complex to configure and manage, leading to its less frequent selection in environments where sophisticated security layers are not a primary requirement.
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