350-501 Question #519: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. Which two features characterize remotely triggered black hole filtering? (Choose two.)

Options

• AIt requires running OSPF.
• BIt is a technique that incorporates a set of well-coordinated configurations.
• CIt requires running EIGRP.
• DIt is a specific Cisco IOS Software feature.
• EIt provides a method for quickly dropping undesirable traffic at the edge of the network.

Explanation

Remotely Triggered Black Hole (RTBH) Filtering: RTBH is a security mechanism used to mitigate DDoS (Distributed Denial of Service) attacks. It redirects undesired traffic (e.g., malicious traffic) to a "black hole" where it is discarded, effectively protecting the target. Key Characteristics: RTBH filtering relies on a set of coordinated configurations across the network, involving routing protocols and filtering mechanisms. RTBH provides a fast and efficient way to drop unwanted traffic at the network edge, reducing the load on internal network devices and ensuring service availability. Routing Protocols: RTBH can be implemented with routing protocols like BGP to propagate black hole routes to It does not specifically require OSPF or EIGRP. Vendor Independence: While Cisco devices can implement RTBH, it is not a Cisco-specific feature. It can be deployed on any network that supports the necessary routing protocols. RTBH is a powerful and efficient tool for mitigating attacks by coordinating routing and filtering configurations to drop malicious traffic at the network edge.

No community discussion yet for this question.