Which two formats are used for vector data?

Vector data is a type of data representation in GIS that uses geometric shapes such as points, lines, and polygons to represent spatial features. Shapefiles are a widely recognized and established format for storing vector data. They consist of several files, with the main file having a .shp extension, which contains the geometric data. Other associated files contain attribute data and indexing information, making shapefiles robust and compatible with various GIS software.

In contrast to vector data, raster datasets and TIFF files are associated with raster data, which represents spatial information in a grid of pixels or cells. PDF and alternative formats are not standard vector data formats either. Therefore, recognizing that shapefiles embody the characteristics and structure required for vector data makes them the correct choice in this context.