Eccouncil ICS-SCADA Exam - Topic 7 Question 45 Discussion

Actual exam question for Eccouncil's ICS-SCADA exam

Question #: 45
Topic #: 7

A Virtual Private Network (VPN) requires how many Security Associations?

Show Suggested Answer

Suggested Answer: D

A Virtual Private Network (VPN) typically requires two Security Associations (SAs) for a secure communication session. One SA is used for inbound traffic, and the other for outbound traffic.

In the context of IPsec, which is often used to secure VPN connections, these two SAs facilitate the bidirectional secure exchange of packets in a VPN tunnel.

Each SA uniquely defines how traffic should be securely processed, including the encryption and authentication mechanisms. This ensures that data sent in one direction is handled independently from data sent in the opposite direction, maintaining the integrity and confidentiality of both communication streams.

Reference

'Understanding IPSec VPNs,' by Cisco Systems.

'IPsec Security Associations,' RFC 4301, Security Architecture for the Internet Protocol.

by Evangelina at Jun 19, 2026, 08:34 AM

Limited Time Offer

25%

Off

Get Premium ICS-SCADA Questions as Interactive Web-Based Practice Test or PDF