Two empty-configured MSR routers are directly connected back-to-back through their respective WAN Serial1/0 interfaces, and their interconnection network segment is 192.0.0.0/24.
At the same time, the two routers are connected to their respective LAN segment users through their respective GigabitEthernet0/0:
HostA----GE0/0--MSR-1--S1/0---------S1/0--MSR-2--GE0/0----HostB
Configure RIPv1 on the two routers, and now both routers have learned the RIP route of the opposite LAN segment. So which of the following statements are correct?

• A.If the LAN segment of one of the routers is 10.0.0.0/24, then the routing table of the other router will learn the route of 10.0.0.0/8
• B.CHAP authentication can be configured on the WAN interface of the two routers to enhance network security
• C.The way to exchange RIP packets between the two routers is multicast
• D.RIP packets between two routers are transmitted based on TCP

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The correct sequence of the steps in the startup process of detecting the router system is _________. (Fill in the code of each step one by one, there can be no spaces in between, such as: ABCD)

• A.Unzip the application
• B.Application loading
• C.Start bootrom
• D.Memory

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SPX belongs to the ______ of the OSI reference model.

• A.Network layer
• B.Session layer
• C.Transport layer
• D.Presentation layer

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In subnet division, which part of the natural classification IP address is occupied by the subnet number?

• A.Subnet number part
• B.host number part
• C.Network number part
• D.None of the above is correct

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The customer's network connection looks like:
HostA----GE0/0--MSR-1--S1/0-----WAN-----S1/0--MSR-2--GE0/0----HostB
The two MSR routers are interconnected through the WAN, and the physical connection is now normal. The address of interface S1/0 of MSR-1 is 3.3.3.1/30, and the address of interface S1/0 of MSR-2 is 3.3.3.2/30. Now the following three static routes are configured on MSR-1:
ip route-static 192.168.1.0 255.255.255.0 3.3.3.2
ip route-static 192.168.2.0 255.255.255.0 3.3.3.2
ip route-static 192.168.0.0 255.255.255.0 3.3.3.2
The 192.168.0.0/22 ​​subnet is the local area network segment where the host HostB is located.
So which of the following descriptions are correct? (multiple choice)

• A.Only the first route will be written into the routing table of MSR-1
• B.Only the third route will be written into the routing table of MSR-1
• C.All three routes will be written into the routing table of MSR-1
• D.These three routes can be replaced by one route ip route-static 192.168.0.0 255.255.252.0 3.3.3.2

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