Google Technical Program Manager Network Deployment interview questions

Submitted resume through Google. I received an email 3 days later asking for my availability. Set up phone screening interview for the following week with a recruiter. The recruiter gave me a call on time and was very pleasant to talk to. We talked about my background and she asked several HR type questions. She then asked several technical questions that I was not prepared for. I was expecting a typical program management style interview. She explained that the hiring manager was looking for someone with very specific technical expertise and we agreed that this position would not be a great fit. She recommended another TPM position, however, it was not in the region I live and I declined more information. I was disappointed that the level of expertise expected during the interview did not match what was stated on the job description.