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54题: RAID技术中,磁盘容量利用率最低的是()。
A、RAID0
B、RAID1
C、RAID5
D、RAID6
答案解析与讨论:
www.cnitpm.com/st/4182811175.html第
55题: 三层网络设计方案中,()是汇聚层的功能。
A、不同区域的高速数据转发
B、用户认证、计费管理
C、终端用户接入网络
D、实现网络的访问策略控制
答案解析与讨论:
www.cnitpm.com/st/4182926020.html第
56题: 以下关于网络工程需求分析的叙述中,错误的是()。
A、任何网络都不可能是一个能够满足各项功能需求的万能网
B、需求分析要充分考虑用户的业务需求
C、需求的定义越明确和详细,网络建成后用户的满意度越高
D、网络需求分析时可以先不考虑成本因素
答案解析与讨论:
www.cnitpm.com/st/418307401.html第
58题: Network security consists of policies and practices to prevent and monitor (1) access,misuse, modification, or denial of a computer network and network-accessible resources.Network security involves the authorization of access to data in a network, which is controlled by the network(2).Users choose or are assigned an ID and password or other authenticating information that allows them to access to information and programs within their authority.Network security secures the network, as well as protecting and overseeing operations being done. The most common and simple way of protecting a network resource is by assigning it a (3) name and a corresponding password. Network security starts with authentication. Once authenticated,a(4)enforces access policies such as what services are allowed to be accessed by the network users.Though effective to prevent unauthorized access, this component may fail to check potentially harmful content such as computer(5)or Trojans being transmitted over the network.
(1) A、unauthorized
B、harmful
C、dangerous
D、frequent
(2) A、user
B、agent
C、server
D、administrator
(3) A、complex
B、unique
C、catchy
D、long
(4) A、firewall
B、proxy
C、gateway
D、host
(5) A、spams
B、malwares
C、worms
D、programs
答案解析与讨论:
www.cnitpm.com/st/4183220320.html