352-001 Question #224: Real Exam Question with Answer & Explanation

Question

Options

• Athe ability of a fault management tool to generate alerts for only an upstream device failure and to
• Bthe ability of devices to exclusively send summary routes and suppress the sending of complete
• Cthe ability of a router to suppress downstream route fluctuations to avoid introducing instability into
• Dthe ability of a network management station to perform root cause analysis on a network fault and
• Ethe ability of an element manager to restrict forwarding to critical performance alarms northbound to

Explanation

Downstream suppression is a fault management capability that suppresses alerts for devices that are unreachable only because an upstream device has failed, reducing alert storms.

Common mistakes.

• B. This describes route summarization, which is a routing optimization technique for reducing routing table size, not a fault management concept.
• C. This describes route dampening or flap dampening, a BGP/IGP mechanism to suppress unstable routes, not a fault alert suppression feature.
• D. This describes root cause analysis itself - the analytical process performed by a network management station - which is related to but distinct from downstream suppression, which is specifically about alert suppression.
• E. This describes northbound alarm filtering or forwarding to an OSS/BSS - a data reduction technique for escalation - not downstream suppression triggered by upstream device failures.

Concept tested. Fault management downstream alert suppression

Reference. https://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/3-8/user/guide/bk_CiscoPrimeInfrastructure_3_8_UserGuide/bk_CiscoPrimeInfrastructure_3_8_UserGuide_chapter_0100111.html

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