XZ company requires to build its network based on the modular enterprise network architecture. XZ has one R&D base in Shenzhen and Xi'an each; one office building in Beijing and Shanghai each; offices with more than 50 people in 23 capital cities; small offices with no more than 8 people in 200 small and medium-sized cities; There are usually more than 200 market and technical personnel on business trips at any given time. Due to environmental and cost issues, some offices cannot access the headquarters through dedicated lines or packet-switched wide area network connections. According to these circumstances, the network module XZ company should have is ________.

In H3C equipment, the default priority value of OSPF internal routing is ________.

After executing the displaospf peer command on the MSR router RTA, the router output is as follows:

It can be judged from the above output that ________.

The BGP protocol withdraws unreachable routes through which of the following messages?

As shown in the figure, RTA is the border router of OSPF routing and BGP routing domain. If a BGP route with a MED value of 100 is imported into OSPF on RTA, then by default, RTB learns the COST value of the route ______.