●One of the main resposibilities of ICMP is to report（）.Although technology has produced increasingly reliable transmission media, errors still exist and must be handled．IP is an （） protocol．This means that error checking and error control are not a concern of IP．ICMP was designed，in part，to compensate for this shortcoming．Howerver, ICMP does not（） errors，it simply reports them．Error correction is left to the higher-level potocols．Error messages are always sent to the original （） because the only information available in the datagram about the route is the source and destination IP addresses．ICMP uses the source IP address to send the error massage to the source of the （） .

One of the main resposibilities of ICMP is to report（）.

题库:计算机网络管理员 类型:最佳选择题 时间:2017-07-03 13:45:30 免费下载:《单项选择》Word试卷

●One of the main resposibilities of ICMP is to report（）.Although technology has produced increasingly reliable transmission media, errors still exist and must be handled．IP is an （） protocol．This means that error checking and error control are not a concern of IP．ICMP was designed，in part，to compensate for this shortcoming．Howerver, ICMP does not（） errors，it simply reports them．Error correction is left to the higher-level potocols．Error messages are always sent to the original （） because the only information available in the datagram about the route is the source and destination IP addresses．ICMP uses the source IP address to send the error massage to the source of the （） .

One of the main resposibilities of ICMP is to report（）.
A.numbers
B.functions
C.strings
D.errors

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