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【单选题】
请参见图示。管理员注意到从 ISP 处进入网络的流量大幅增加。管理员清除了计数器。几分钟之后,管理员又检查 access-list 表。从图中的输出可得出什么结论?A.
少量 HTTP 流量表明 web 服务器未正确配置。
B.
较高的 POP3 流量（与 SMTP 流量相比）表明企业中 POP3 电子邮件客户端的数量比 SMTP 客户端数量多。
C.
大量 ICMP 流量在接口处被拒绝，这是受到 DoS 攻击的迹象。
D.
较高的电子邮件流量（与 web 流量相比）表明攻击目标主要是电子邮件服务器。
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【简答题】Plato was a superb writer, and his works are part of the world’s great literature. Most of his existing work is ____ dialogs and letter.
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【单选题】Plato was a superb writer, and his works are part of the world ’ s great literature. Most of his existing work is _____ dialogs and letters.
A.
in succession of
B.
in favor of
C.
in the form of
D.
in the company of
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【简答题】Plato was a superb writer, and his works are part of the world’s great literature. Most of his existing work is dialogs and letters.
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