Which are valid components of a WAN? (Select all that apply) a. Leased lines b. Routers c. Satellites d. Switches

The correct answers are:<br /><br />**a. Leased lines** <br />Leased lines are commonly used in WANs to provide dedicated communication links between geographically separated locations.<br /><br />**b. Routers** <br />Routers are essential components of a WAN as they connect different networks and direct data packets between them.<br /><br />**c. Satellites** <br />Satellites are valid components of a WAN, especially for providing connectivity in remote areas where traditional wired connections are not feasible.<br /><br />Switches (d) are typically associated with LANs rather than WANs.