In networking, what role does network bandwidth serve when evaluating communication links?

True or False: Network bandwidth measures the total storage capacity of networked devices.

In what terms is network bandwidth typically expressed when measuring data transmission?

A network administrator is evaluating whether a company's communication link can support a new data-intensive application. Explain how the administrator should use network bandwidth to assess the link's capability. In your response, describe the two key variables the administrator must measure and explain what this metric reveals about the communication link.