In addition to an OS map, mapping questions include supplementary sources of information. As well as graphs and tables of data, you can also be presented with photographs and/or sketches. You should be prepared to link these to map evidence and use your knowledge and understanding to interpret all the information provided.
You could be asked to study a cross section on the OS map between two points, usually six figure grid references.
To answer this type of question it is useful to use a pencil to draw the cross section line on your OS map. You can then work out each land use as it appears along the line from A to B.