听力原文:M: Your house looks nice. What did you do to it?
W: I had it painted.
What did the woman do?
A. She built the house.
B. She ordered a painting for the house.
C. She hired someone to paint the house.
D. She hid the house.
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Frame. Relay is simplified form. of(71), similar in principle to(72), in which synchronous, frames of data are routed to different destinations depending on header information.
Packets are routed throught one or more Virtual Circuits known as(73)Most Virtual Circuits are(74), which means that the network provider sets up all DLCI connections at subscription time.(75)are also part of the Frame. Relay specification. They privide a link that only lasts only as long as the session.
A. Datagram Switching
B. Datagram Routing
C. Packet Switchig
D. packet Routing
A.00 01000100 1101(二进制)B.01 00100011 0100(二进制)C.10 1000 1111 1000(二进制)D.11 01
A. 00 01000100 1101(二进制)
B. 01 00100011 0100(二进制)
C. 10 1000 1111 1000(二进制)
D. 11 0100 1110 1000(二进制)
A.大数难以分解因子B.大数容易分解因手C.容易获得公钥D.私钥容易保密
A. 大数难以分解因子
B. 大数容易分解因手
C. 容易获得公钥
D. 私钥容易保密
公钥密码是(39)。常用的公钥加密算法有(40),它可以实现加密和数字签名,它的一个比较知名的应用是(41),这种应用的协商层用公钥方式进行身份认证,记录层涉及到对应用程序提供的信息的分段、压缩、数据认证和加密。
A. 对称密钥技术,有1个密钥
B. 不对称密钥技术,有2个密钥
C. 对称密钥技术,有2个密钥
D. 不对称密钥技术,有1个密钥