def is_replica_of(a, b):
    """Return True if monitor a is a replica of b.

    Replica means same resolution and position.
    """
    return a['pos_x'] == b['pos_x'] and a['pos_y'] == b['pos_y'] and a['res_x'
        ] == b['res_x'] and a['res_y'] == b['res_y'] and b['enabled']
