Identify glycosidic linkage present in maltose.

Maltose is a disaccharide composed of two $\alpha$-D-glucose units.

The glycosidic linkage is formed between the C-1 of one $\alpha$-D-glucose unit and the C-4 of the other $\alpha$-D-glucose unit.

Thus, the glycosidic linkage present in maltose is $\alpha$-1,4.

Answer: $\alpha\text{-1,4}$