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问题 多项选择题

经过国家工商行政管理总局核准，企业名称可以不冠以所在地行政区划名称的有（）。

A、历史悠久、字号驰名的企业

B、外商投资企业

C、私营企业

D、合伙企业

答案

参考答案：A, B

单项选择题

___57___ is used to ensure the confidentiality, integrity and authenticity of the two end points in the private network. ___58___, an application-layer protocol, authenticates each peer in an IPSec transaction. IKE negotiates security policy, determining which algorithm may be used to set up the tunnel. It also handles the exchange of session keys used for that one transaction.

Networks that use ___59___ to secure data traffic can automatically authenticate devices by using by using ___60___, which verify the identities of the two users who are sending information back and forth. IPSec can be ideal way to secure data in large networks that require secure connections among many devices.

Users deploying IPSec can ___61___ their network infrastructure without affecting the applications on individual computer. The protocol suite is available as a software-only upgrade to the network infrastructure. This alows security to be implemented without costly changes to each computer. Most important, IPSec allows interoperability among different network devices, PCs and other computing systems.

57（）

A. Certificate

B. Encryption

C. Tunnel

D. Presentation
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单项选择题 A型题

拔伸法操作要求是（）

A.用力要大，动作快速

B.用力要均匀、持久、动作缓和

C.用力要小，动作要慢

D.关节上下的一对拉伸力应一大一小

E.以上都不是
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