Which of the following items can typically be stored in an Exchange mailbox?

The correct answer identifies that an Exchange mailbox can store a variety of items essential for personal and professional communication and organization. Specifically, it includes emails, calendar events, contacts, tasks, and notes.

Exchange mailboxes are designed to manage a wide range of personal information management (PIM) elements beyond just emails. Calendar events enable users to schedule and manage appointments and meetings efficiently. Contacts help maintain a list of individuals and organizations necessary for ongoing communications. Tasks allow users to create, manage, and prioritize their to-do lists, while notes can be used for quick reminders or important points.

The other options are limited in scope. The first suggests only emails and instant messages, overlooking the diverse functionalities of an Exchange mailbox. The third option incorrectly implies physical documents can be stored, while Exchange is primarily digital. The last option restricts it to emails and website links, again failing to encompass the broader range of personal information management capabilities that Exchange mailboxes are designed to support. Thus, choice B comprehensively captures the full spectrum of items that can be stored in an Exchange mailbox.