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第71题:
Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (1 ) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (2) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim's address book, previous emails, web pages (3) .
As administrators seek to block dangerous email attachments through the recognition of well-known (4) , virus wr
当客户端收到多个DHCP服务器的响应时,客户端会选择(38)地址作为自己的IP地址。
A.最先到达的
B.最大的
C.最小的
D.租期最长的
IEEE 802.1q协议的作用是 ( ) 。
A、生成树协议
B、以太网流量控制
C、生成VLAN标记
D、基于端口的认证
在Kerberor认证系统中,用户首先向 (1) 申请初始票据,然后从 (2) 获得会话密钥。
(1)A、域名服务器DNS
B、认证服务器AS
C、票据授予服务器TGS
D、认证中心CA
(2)A、域名服务器DNS
B、认证服务器AS
C、票据授予服务器TGS
D、认证中心CA