Employees in an enterprise often need to connect to the enterprise's intranet for remote access when going on business.
Which of the following technologies can meet this demand? (Choose two.)

If a fault cannot be rectified in a short time on a complex network but the customer needs to restore network availability immediately, which of the following actions is recommended?

Which of the following aspects should be considered for migration risk assessment?

Which of the following are possible causes for an MSTP failure in a LAN? (Multiple Choice)

On a Layer 2 switching network devices forward data based on MAC addresses. Therefore, data filtering can be performed based on MAC addresses, and a firewall in transparent cannot filter out Layer 3 information in data packets.