For the understanding of packet switching, the correct one of the following statements is ______. (Multiple choice)

Regarding the compressed expression of the IPv6 address 2001:0410:0000:0001:0000:0001:0000:45FF, which of the following is correct? (multiple choice)

The role of FTP data connection includes ______. (Multiple choice)

The two WAN interfaces S1/0 and S1/1 of the router MSR-1 are connected to the routers MSR-2 and MSR-3 respectively.
At the same time, the Ethernet port of MSR-1 is connected to MSR-4. All four routers have run the RIP protocol and completed routing learning correctly. All routers have started all the features of RIP to prevent loops. At this time, it is found that the MSR If the network 192.168.0.0 on -2 fails, then ______. (Multiple choice)

I saw the following debugging information on an MSR router:
*Jan 23 09:17:36:720 2009 H3C RM/6/RMDEBUG:Source Address: 192.168.1.1
*Jan 23 09:17:36:770 2009 H3C RM/6/RMDEBUG:Destination Address: 224.0.0.5
*Jan 23 09:17:36:871 2009 H3C RM/6/RMDEBUG:Ver# 2, Type: 1, Length: 48.
*Jan 23 09:17:36:972 2009 H3C RM/6/RMDEBUG:Router: 192.168.1.1, Area: 0.0.0.0, Checksum: 62961.
*Jan 23 09:17:37:72 2009 H3C RM/6/RMDEBUG:AuType: 00, Key(ascii): 0 0 0 0 0 0 0 0.
*Jan 23 09:17:37:173 2009 H3C RM/6/RMDEBUG:Net Mask: 255.255.255.0, Hello Int: 10, Option: _E_.
Then according to the above information, you can know ______.