Looking for reliable answers? Westonci.ca is the ultimate Q&A platform where experts share their knowledge on various topics. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.

Which of these is an SNMP enumeration countermeasure?
a. Use standard network admin contacts for DNS registrations
b. Disable the open relay feature
c. Block access to TCP/UDP port 161
d. Ignore emails to unknown recipients by configuring SMTP servers