A network engineer needs to write a device upgrade guide. Which of the following should be included in the guide? (Multiple choice)

On a broadcast network, routers (including non-DIS routers) of the same level on a network segment can establish neighbor relationships. In the implementation of BFD for IS-IS, however, BFD sessions are established only between a DIS and non-DIS routers, not between non-DIS routers.

On the network shown in the figure, EBGP peer relationships are established between neighboring routers through directly connected interfaces. The router ID of each router is
10.0.X.X, and the AS number is 6500X, where X is the number of the router. Both R1 and R4 have static routes to 192.168.1.0/24, which are imported to BGP through the import-route command. R3 is configured with the peer y.y.y.y as-path-filter 1 import command for all peers.

Which of the following sets of commands enables R3 to select the route with the longest AS_Path to 192.168.1.0/24?

In the OSPF network shown in the figure, area 1 is an NSSA area, area 2 is a common area, and R4 imports the external route 10.0.4.4/32. The Router ID of each device is 10.0.XX, where X is the device number.

The "asbr-summary 10.0.4.0 255.255.255.0" command is configured in the OSPF processes of R1 and R3. Which of the following routers have a route entry for 10.0.4.0/24 in their routing tables? (Multiple choice)

The business routes of an enterprise are transmitted in the network, and part of the configuration of PE1 and PE2 is shown in the figure. At this time, CE1 adds a new business network segment and announces it to Area 1 of OSPF 10.

In this scenario, which type of LSA will CE2 receive, which will contain the service network segment newly announced by CE1?