Which of the following can be accomplished using iRules?

Tracking traffic is a valid iRules capability but is only one of several, so selecting A alone ignores the other correct options.

Deep packet inspection is achievable with iRules but represents only one capability, making B an incomplete answer.

Dropping traffic via the 'drop' command is valid but is only one of the listed capabilities, so C alone is insufficient.

iRules are an event-driven scripting language (based on Tcl) embedded in BIG-IP that can trigger on dozens of protocol events across layers 4-7. They can inspect payload content for deep packet inspection, increment and track connection counters for inbound and outbound traffic, issue a 'drop' command to silently discard packets, and use 'redirect' or 'virtual' commands to forward traffic elsewhere - all within a single policy framework.

Intercepting and redirecting traffic is a valid iRules use case but covers only one of the listed capabilities, making E an incomplete answer.