Exterior surface configuration for a hood of a truck

FIG. 1 is a front perspective view of an exterior surface configuration for a hood of a truck showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof; and,

FIG. 5 is a top view thereof.

The underside of the hood forms no part of the claimed design.

The adjacent hardware shown in broken lines are for illustrative purposes only and form no part of the claimed design.