This item contains several questions that you must answer. You can view these questions byclicking on the Questions button to the left. Changing questions can be accomplished by clickingthe numbers to the left of each question. In order to complete the questions， you will need to referto the SDM and the topology， neither of which is currently visible. To gain access to either the topology or the SDK click on the button to left side of the screen that Cisco 642-832： Practice Exam corresponds to the section you wish to access. When you have finished viewing the topology theSDK you can return to your questions by clicking on the Questions button to the left. Which peer authentication method and which IPSEC mode is used to connect to the branchlocations？（）

• A、Digital Certificate
• B、Pre-Shared Key
• C、Transport Mode
• D、Tunnel Mode
• E、GRE/IPSEC Transport Mode
• F、GRE/IPSEC Tunnel Mode