Refer to the exhibit. This router is being configured to use SDM, but the SDM interface of the router cannot be accessed. What is the cause of the problem?
Refer to the exhibit. This router is being configured to use SDM, but the SDM interface of the router cannot be accessed. What is the cause of the problem?

- The VTY lines are not configured correctly.
- The HTTP timeout policy is not configured correctly.
- The authentication method is not configured correctly.
- The username and password are not configured correctly.
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