北语网院13春《计算机网络技术》作业3（国外英文资料）.docVIP

北语网院13春《计算机网络技术》作业3（国外英文资料） Problem number: 1: choice question (please choose the following selection Problem number: 1: choice question (please choose the only correct answer in the following choices) : 4 Content: The UDP protocol is a () unconnected protocol. Options: A, not reliable B, reliable C, the network layer D, safety Problem number 2: a single choice (please select the only correct answer in the following choices) : 4 Content: The threat to the computer network, the passive attack is (). Options: A, intercept B, the interrupt C, tampering with D, forge Problem number: 3: a single choice (please select the only correct answer in the following choices) : 4 Content: Generic top-level domain represents (). Options: A, web services B, education institutions C, nonprofit organizations D, companies Title 4: a single choice (please select the only correct answer in the following choices) : 4 Content: The file extension representing the WWW page file is called (). Options: A, JPG B, GIF C, mpeg, D, HTML Title 5: a single choice (please select the only correct answer in the following choices) : 4 Content: Generic top-level domain names dot com (). Options: A, companies B, military departments C, education institutions D, government departments, Problem number 6: a single choice (please select the only correct answer in the following choices) : 4 Content: A generic top-level domain represents (). Options: A, web services B, education institutions C, nonprofit organizations D, companies Questions: 7: one choice (please select the only correct answer in the following choices) : 4 Content: The biggest problem in key management is the key (). Options: A, produce B, distribution, C, injection D, validation, Title: problem number 8: a single choice (please select the only correct answer in the following choices) : 4 Content: A firewall can be divided into two basic types (). Options: A, packet filtering and complex type B, compound and application agent C, packet filter