单项选择题
A. Utilize Layer 3 switching.
B. Utilize software accelerated services.
C. Aggregate end users and support a feature-rich environment.
D. Perform packet manipulation and filtering at the core layer.
E. Use redundant point-to-point Layer 2 interconnections when there is a link or node failure.
单项选择题 In a base e-Commerce module design, which routing statement is correct?（）
单项选择题 Lafeyette Productions is looking for a new ISP that has improved availability, load balancing, and catastrophe protection. Which type of ISP connectivity solution would be best?（）
多项选择题 Flex Links are a pair of a Layer 2 interfaces (switchports or port channels), where one interface is configured to act as a backup to the other. Which two statements are correct regarding Flex Links?（）