《全国计算机软考网管英语试题及答案

全国计算机软考网管英语试题及答案(1)

Heterogeneous network environments consist of computer systems from(1)vendors that run(2)operating systems and communication protocols．An organization that(3)its computer resources is usually(4)the task of integrating its heterogeneous systems．Typically，each deparlment or division has defined its own network needs(5)0S，LAN topology，communication protocols，applications，and other components．　　(1)A．same　　B．similar　　C．different　　D．difference　　(2)A．same　　B．similar　　C．different　　D．difference　　(3)A．consolidates　　B．consists　　C．considerate　　D．consoles　　(4)A．faced on　　B．faced with　　C．faced about　　D．faced up to　　(5)A．in general　　B．in any term　　C．in set terms　　D．in terms of　　答案：(1)C (2)C (3)A (4)B (5)D　　解析：异构网络环境由不同制造商生产的计算机系统组成，这些计算机运行不同的操作系统和通信协议。任何一个想统计计算机资源的组织通常会面临整合异构系统的任务。典型地，每一个部门或分部已经规定了自己的网络需要，根据操作系统、局域网拓扑结构、通信协议、应用程序及其它因素。

There are two types of key technology：private key and public key．Private-key encryption methods are called(1)ciphers，information is encrypted with(2)both the sender and receiver hold privately．Public—key encryption methods are called(3)ciphers，(4)created for each user，encryption key and decryption key are(5)．　　(1)A．synchronous　　B．asynchronous　　C．symmetric　　D．asymmetric　　(2)A．a key　　B．two keys　　C．three keys　　D．four keys　　(3)A．synchronous　　B．asynchronous　　C．symmetric　　D．asymmetric　　(4)A．two related keys are　　B．a key is　　C．two unrelated keys are　　D．three keys are　　(5)A．same　　B．different　　C．difference　　D．some　　答案：(1)C (2)A (3)D (4)A (5)B　　解析：有两种加密技术：私有密钥和公开密钥。私有密钥加密方法被称为对称密钥加密，在发送者和接受者之间的信息共同具有同一个密钥，公开密钥加密方法被称为非对称密钥加密，对于每一个使用者，都建立两个相关的加密与解密密钥，但它们不同。

(1) is a channel’s capacity which directly reflects the data transfer rate of the channel．　　(2)functions in a NetWare network which is used to define addressing schemes．　　(3)is a network layer device that supports multiple LAN interfacesand segments LANs into smaller collision and broadcast domains.　　(4)is the popular LAN developed u