Go here to the original Microsoft Description of this exam.

Here is a short abstract of what you schould now for this exam taken from the above mentioned site-

Install and configure servers (15–20%)

• Install servers
• Configure Servers, Server Core
• Configure local storage

Configure server roles and features (15–20%)

• Configure file and share access
• Configure print and document services (Easy print driver!)
• Configure servers for remote management (WinRM, server management)

Configure Hyper-V (15–20%)

• Create and configure virtual machine settings
• Create and configure virtual machine storage
• Create and configure virtual networks

Deploy and configure core network services (15–20%)

• Configure IPv4 and IPv6 addressing (DHCP)
• Deploy and configure DNS service

Install and administer Active Directory (15–20%)

• Install domain controllers
• Create and manage Active Directory users and computers
• Create and manage Active Directory groups and organizational units (OUs)

Create and manage Group Policy (15–20%)

• Create Group Policy objects (GPOs)
• Configure security policies
• Configure application restriction policies
• Configure rules for multiple profiles using Group Policy

Wondering which questions may come?

There are a lot of example questions in the official training books. Normally
they have not much to do with the question that have to be answered in reality.
So
remember, only real knowledege will help you in work.

Preparatation

A good posibility are the microsoft books.

Here the newer: