101 Question #4: Real Exam Question with Answer & Explanation

Question

Options

• Ato define an address that grants administrative access to either system at any time
• Bto define an address that allows either system to initiate communication at any time
• Cto define an address that allows network devices to route traffic via a single IP address
• Dto define an address that gives network devices greater flexibility in choosing a path to forward

Explanation

Floating self-IP addresses on F5 BIG-IP are shared addresses in a high availability pair that migrate to the active unit during failover, giving upstream network devices a single stable IP address for routing traffic.

Common mistakes.

• A. Floating self-IPs are not used for administrative access; administrative access is provided by non-floating self-IPs or the dedicated management interface, each statically bound to a specific unit.
• B. Floating self-IPs do not allow both systems to initiate communication simultaneously; they are exclusively owned by the active unit and are unavailable on the standby unit until failover occurs.
• D. Floating self-IPs provide a single consistent address for routing, not greater path flexibility; path selection flexibility is a routing protocol concern, not a function of floating self-IPs.

Concept tested. F5 BIG-IP floating self-IP purpose in high availability

Reference. https://techdocs.f5.com/en-us/bigip-15-1-0/big-ip-tmos-routing-administration/self-ip-addresses.html

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