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Oracle

1Z0-997-20 · Question #92

A retail company runs their online shopping platform entirely on Oracle cloud Infrastructure (OCI). This is a 3-tier web application that Includes a Mbps Load Balancer. Virtual Machine Instances for…

The correct answer is B. All the web servers are too busy and not able to answer any request from users. A 503 Service Unavailable Error is an HTTP response status code indicating that a server is temporarily unable to handle the request. This may be due to the server being overloaded or down for maintenance.

Design Highly Available Solutions

Question

A retail company runs their online shopping platform entirely on Oracle cloud Infrastructure (OCI). This is a 3-tier web application that Includes a Mbps Load Balancer. Virtual Machine Instances for web and an Oracle DB Systems Virtual Machine Due to unprecedented growth, they noticed an Increase in the Incoming traffic to their website and all users start getting 503 (Service Unavailable) errors. What is the potential problem in this scenario?

Options

  • AThe Load Balancer health check status Indicates critical situation for half of the backend
  • BAll the web servers are too busy and not able to answer any request from users.
  • CThe Database Is down hence users can not access the web site
  • DThe Traffic Management Policy is not set to load Balancer the traffic to the web servers.
  • EYou did not configure a Service Gateway to allow connection between web servers and load

How the community answered

(49 responses)
  • A
    16% (8)
  • B
    71% (35)
  • C
    4% (2)
  • D
    2% (1)
  • E
    6% (3)

Explanation

A 503 Service Unavailable Error is an HTTP response status code indicating that a server is temporarily unable to handle the request. This may be due to the server being overloaded or down for maintenance.

Topics

#Load Balancer#503 error#backend availability#troubleshooting

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