What type of alert rule is configured based on network conditions such as TCP protocol behavior and congestion?

Question

Options

• AProtocol alert
• BPerformance alert
• CSecurity alert
• DThreshold alert

• B
  4% (1)
• C
  4% (1)
• D
  93% (25)

Explanation

Threshold alert rules fire when a monitored metric crosses a defined value, making them the correct fit for network conditions like TCP congestion or protocol behavior - for example, triggering when packet retransmission rates exceed 5% or when bandwidth utilization surpasses a set limit.

Option A (Protocol alert) is not a standard alert category in most monitoring frameworks; protocol-level observation is the source of data, not the alert type itself. Option B (Performance alert) is tempting but is a broader category tied to application or system performance metrics, not specifically to network-layer conditions. Option C (Security alert) is reserved for events like intrusion attempts or policy violations - congestion is an operational condition, not a security threat.

Memory tip: Think of "threshold" as a trigger line - whenever a TCP or network metric crosses that line (up or down), the alert fires. If the alert has a number attached to it (e.g., "alert when RTT > 200ms"), it's almost always a threshold alert.

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