in an unstructured interview, you may have to answer open-ended questions that can be asked in any order without any fixed schedule. they are more conversational. almost all interviews, except structured interviews, are of this nature.

pros

• unstructured interviews are flexible, as questions don’t follow an order, rather depend on answers.
• the open-ended questions make candidates talk and explain his understanding of a situation.

cons

• unstructured interviews are time-consuming, as one would require sufficient time to analyze the information before arriving at a conclusion.

• the interviewer must have certain skills like the ability to establish a good rapport and knowing when to probe.