101 · Question #323
Match each persistence method with the correct statement describing it:
The correct answer is B. Source address persistence. Source address persistence routes all connections from a given client IP to the same pool member, relying solely on the network-layer source address with no application-layer inspection.
Question
Match each persistence method with the correct statement describing it:
Options
- ACookie persistence
- BSource address persistence
- CSSL persistence
- DUniversal persistence
How the community answered
(51 responses)- A6% (3)
- B90% (46)
- C2% (1)
- D2% (1)
Why each option
Source address persistence routes all connections from a given client IP to the same pool member, relying solely on the network-layer source address with no application-layer inspection.
Cookie persistence inserts or reads an HTTP Set-Cookie header to identify client sessions, which requires HTTP-layer inspection and does not function for non-HTTP protocols or when clients block cookies.
Source address persistence uses the client's source IP address as the session key, requiring only IP header inspection to maintain stickiness - it is the simplest persistence type, has no dependency on cookies or SSL state, and is often used when clients cannot accept cookies or when the application is non-HTTP.
SSL persistence extracts the SSL/TLS session ID from the handshake to maintain affinity, requiring the BIG-IP to inspect the TLS layer rather than simply reading the IP header.
Universal persistence relies on a user-written iRule to define a custom data element as the persistence key, requiring scripted logic and is not a built-in automatic mechanism.
Concept tested: F5 LTM session persistence methods comparison
Source: https://techdocs.f5.com/en-us/bigip-15-1-0/big-ip-local-traffic-management-profiles-reference/persistence-profiles.html
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