题目内容

Windows系统中内置了一些用户组，其中，对计算机拥有不受限制的完全访问权的用户组是（1）；权限最低的用户组是（2）。空白（1）处应选择（）

Administrators
B. PowerUsers
C. Users
D. Guests

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在Windows操作系统中，某主机运行（1）命令后显示的信息如下图所示，则该网卡IP地址为（2），默认网关为（3）。空白（2）处应选择（）

A. 119.245.67.209
B. 119.245.67.254
C. 127.0.0.1
D. 240.0.0.0

DHCP客户端在首次启动时会向网络发出一个Dhcpdiscover包来请求IP地址，其目的IP地址为（）。

A. 192.168.0.1
B. 0.0.0.0
C. 255.255.255.0
D. 255.255.255.255

列接入网技术中，通过电话线接入的是（）。

A. HFC
B. ADSL
C. FTTx
D. Wi-Fi

One ofthe main resposibilities of ICMP is to report(1).Although technology has produced increasingly relaible transmission media, errors still exist and must be handled. IP is an (2) 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 (3) errors, it simply report them. Error correction is left to the higher-level potocols. Error messages are always sent to the original (4) because the only information available in the datagram about the route is the source and destination IP addresses. ICMP use the source IP address to sent the error massage to the source of the (5). 空白（1）处应选择（）

A. numbers
B. functions
C. strings
D. errors