He wouldn't need to know it for the job, but as others have said he probably would know it if he really had the experience on his resume. That's the value for m

He wouldn't need to know it for the job, but as others have said he probably would know it if he really had the experience on his resume. That's the value for me sometimes in questions like that, especially in an initial phone screen, to decipher if you're bullshitting or exaggerating your credentials.