49.WhichstatementsaretrueregardingICMPpackets?
A.ICMPguarantees,datagramdelivery
B.ICMPisencapsulatedwithinUDPdatagram
C.ICMPisunencapsulatedwithinIPdatagram
D.ICMPcanprovidehostswithinformationaboutnetworkproblems
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C.ICMP is unencapsulated within IP datagram
D.ICMP can provide hosts with information about network problems