A network engineer is configuring Flexible Netflow and enters these commands: Sampler Netflow1 Mode random one-out-of 100 Interface fastethernet 1/0 Flow-sampler netflow1 Which are two results of impl

Question

Options

• ACPU and memory utilization are reduced.
• BOnly the flows of top 100 talkers are exported
• CThe data export flow is more secure.
• DThe number of packets to be analyzed are reduced
• EThe accuracy of the data to be analyzed is improved

• A
  72% (34)
• B
  17% (8)
• C
  6% (3)
• E
  4% (2)

Explanation

Flexible NetFlow Sampling Explanation

Configuring a sampler with "random one-out-of 100" means only 1 packet in every 100 is analyzed, which directly reduces the number of packets processed (D) and consequently lowers CPU and memory utilization (A) - the router spends far less resources capturing and exporting flow data compared to traditional NetFlow, which captures every packet.

Why the distractors are wrong:

• B is incorrect because "one-out-of-100" refers to a packet sampling ratio, not filtering by top talkers - it randomly samples traffic, not selectively by volume
• C is incorrect because sampling has no impact on the security or encryption of the exported data stream
• E is incorrect - in fact, sampling reduces accuracy since you're only analyzing a subset of traffic; traditional NetFlow is more accurate because it captures all flows

Memory Tip: Think of sampling like a quality control inspector on an assembly line - instead of checking every product (traditional NetFlow), they check 1 in every 100 (sampled NetFlow). This saves time and energy (CPU/memory ↓) and reduces the workload (packets analyzed ↓), but you might miss some defects (accuracy ↓). If a distractor claims sampling improves accuracy or security, it's a trap!

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