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101 · Question #118

What is the advantage of specifying three load balancing methods when load balancing within pools?

The correct answer is C. Specifying three methods allows the GTM System alternate methods if insufficient data is. F5 GTM supports a preferred, alternate, and fallback load balancing method per pool to handle scenarios where the primary method lacks sufficient data. Specifying all three ensures graceful degradation.

Section 3: Load Balancing and High Availability Basics

Question

What is the advantage of specifying three load balancing methods when load balancing within pools?

Options

  • ASpecifying three methods allows the GTM System to use all three methods simultaneously.
  • BSpecifying three methods allows the GTM System to choose the optimal method for each name
  • CSpecifying three methods allows the GTM System alternate methods if insufficient data is
  • DSpecifying three methods allows the GTM System to rotate between the three methods so that no

How the community answered

(54 responses)
  • A
    9% (5)
  • B
    17% (9)
  • C
    70% (38)
  • D
    4% (2)

Why each option

F5 GTM supports a preferred, alternate, and fallback load balancing method per pool to handle scenarios where the primary method lacks sufficient data. Specifying all three ensures graceful degradation.

ASpecifying three methods allows the GTM System to use all three methods simultaneously.

GTM does not apply all three methods simultaneously - it uses them in a strict preferred, alternate, fallback priority order.

BSpecifying three methods allows the GTM System to choose the optimal method for each name

GTM does not dynamically choose the optimal method per resolution based on conditions - it follows the configured priority order.

CSpecifying three methods allows the GTM System alternate methods if insufficient data isCorrect

When the GTM system's preferred load balancing method (e.g., Round Trip Time) cannot be applied due to insufficient probe data or metrics, it falls back to the alternate method. If the alternate method also cannot be applied, the fallback method is used, ensuring a resolution is always returned under varying data availability conditions.

DSpecifying three methods allows the GTM System to rotate between the three methods so that no

GTM does not rotate between the three methods in round-robin fashion - rotation is not the purpose of specifying multiple methods.

Concept tested: F5 GTM pool load balancing method fallback hierarchy

Source: https://techdocs.f5.com/en-us/bigip-14-1-0/big-ip-dns-implementations/configuring-gtm-pool-load-balancing.html

Topics

#GTM load balancing#alternate methods#fallback#pool load balancing

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