a. state three differences between a local area network and a wide Area network.

b. a college intends to introduce an automated registration system. students will carry a card which will be read automatically by an input device every morning so that college administration will know that they are present.

i. name a suitable input device that would be used to read the card.

ii. instead of using the card-based system, the management suggests using biometrics.

describe two ways that the college would benefit from this approach system.