The two MSR routers are connected as shown in the figure.

OSPF is currently running between the two routers. Now that you need to configure an ACL on RTA to prevent the establishment of OSPF neighbor relationship between RTA and RTB, which of the following ACLs is feasible to apply in the outbound direction of the GE0/0 interface of RTA?

• A.acl number 3000 rule 0 deny ip destination 224.0.0.5 0 rule 5 permit ip
• B.acl number 3000 rule 0 deny ip destination 224.0.0.5 0 eq 89 rule 5 permit ip
• C.acl number 3000 rule 0 deny ospf rule 5 permit ip
• D.acl number 3000 rule 0 deny udp destination-port eq 89 rule 5 permit ip

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UDP belongs to the ______ of the OSI reference model.

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

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When using the ping command on the MSR router, you can use the ______ parameter to set the length of the sent ICMP packet. size

• A.-b
• B.-c
• C.-n
• D.-s

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After opening the console to monitor system information, use the ______ command to turn on the screen output of debugging information.

• A.terminal screen
• B.terminal information
• C.terminal debugging
• D.terminal monitor

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In the display of the display interface command, which of the following LCP and NCP status indicates that the PPP link has been established?

• A.LCP Opened, IPCP Opened
• B.LCP Initial, IPCP Closed
• C.LCP Closed, IPCP Closed
• D.LCP Closed, IPCP Opened

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