单项选择题 Which of the following interfaces is used to connect analog devices to the Internet?（）

多项选择题 Which of the following are common VPN transports? (Select TWO)（）

单项选择题 A user reports sporadic connectivity with their wireless connection. A technician determines the wireless speed reported by the laptop to be 1Mbps. Which of the following is the MOST likely cause of this issue?（）