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Network_Appliance

NS0-157 · Question #399

AutoSupport recently stopped working. No changes were made on the cluster itself. Which three factors outside of the cluster would cause the failure? (Choose three.)

The correct answer is A. changes to DNS B. changes to the firewall E. changes to the proxy server. AutoSupport relies on external network infrastructure to deliver messages; changes to DNS, firewalls, or proxy servers outside the cluster can silently break delivery.

Performance, Troubleshooting, and Security

Question

AutoSupport recently stopped working. No changes were made on the cluster itself. Which three factors outside of the cluster would cause the failure? (Choose three.)

Options

  • Achanges to DNS
  • Bchanges to the firewall
  • Cchanges to the Active Directory service account
  • Dchanges to your NetApp support user ID
  • Echanges to the proxy server

How the community answered

(47 responses)
  • A
    79% (37)
  • C
    15% (7)
  • D
    6% (3)

Why each option

AutoSupport relies on external network infrastructure to deliver messages; changes to DNS, firewalls, or proxy servers outside the cluster can silently break delivery.

Achanges to DNSCorrect

AutoSupport must resolve hostnames such as support.netapp.com via DNS; if external DNS is changed or broken, name resolution fails and messages cannot be delivered.

Bchanges to the firewallCorrect

AutoSupport transmits over HTTP, HTTPS, or SMTP on specific ports; a firewall rule change blocking those ports will prevent all outbound AutoSupport traffic.

Cchanges to the Active Directory service account

Active Directory service accounts govern CIFS/SMB authentication, not AutoSupport message delivery, so changes there have no effect on AutoSupport.

Dchanges to your NetApp support user ID

The NetApp support user ID is a web portal credential for human access and is not used by the cluster to authenticate or transmit AutoSupport messages.

Echanges to the proxy serverCorrect

When a proxy server is configured for AutoSupport, any change to the proxy address, port, or availability breaks the forwarding path for AutoSupport messages.

Concept tested: AutoSupport external delivery dependencies

Source: https://docs.netapp.com/us-en/ontap/system-admin/requirements-autosupport-reference.html

Topics

#AutoSupport#DNS#firewall#proxy server

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