Which statements are true regarding ICMP packets?
They acknowledge receipt of a TCP segment.
They guarantee datagram delivery.
They can provide hosts with information about network problems.
They are encapsulated within IP datagrams.

• A.2, 3 and 4
• B.2 and 3
• C.1 only
• D.3 and 4

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PPPoE server only works within one Ethernet broadcast domain that it is connected to. If there is a router between server and end-user host, it will not be able to create PPPoE tunnel to that PPPoE server.

• A.False
• B.True

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How many usable IP addresses are there in a 23-bit (255.255.254.0) subnet?

• A.510
• B.254
• C.512
• D.508

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When backing up your router by using the 'Export' command, the following happens:

• A.You are requested to give the export file a name
• B.Winbox usernames and passwords are backed up
• C.The Export file can be edited with a standard text editor after its creation

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What command will display the line, protocol, DLCI, and LMI information of an interface?

• A.sh pvc
• B.show frame-relay pvc
• C.show interface
• D.show run

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