
【名词&注释】
脆弱性(vulnerability)、字符串(string)、安全漏洞(security vulnerability)、工作方式(working mode)、单元格(unit grid)、邮政编码(post code)、自定义数据类型(self-defined data types)
[单选题]下面网络互联设备中,工作在网络层的设备是()。
A. 交换机
B. 传统交换机
C. 交换机
D. 路由器
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举一反三:
[单选题]在单元格中输入数字字符串100080(邮政编码(post code))时,应输入()
A. 100080
B. 100080
C. 100080
D. 100080
[单选题]Currently the Pentium chip or(71), made by(72), is the most common CPU though there are many other companies that produce processors for personal computers. One example is the CPU made by Motorola which is used in Apple computers. With faster processors the clock speed becomes more important. Compared to some of the first computers which operated at below 30 megahertz((73))the Pentium chips began at 75 megahertz in the late 1990g. As of mid 2003 speeds now exceed 3000 + megahertz or 3 gigahertz(check your local computer store for the latest speed). It depends on the(74)that the chip is housed in, or the(75), as to whether you are able to upgrade to a faster chip. The motherboard contains the circuitry and connections that allow the various component to communicate with each other.
A. processing
B. professional
C. processor
D. producer
[单选题]● 在某次针对数据库的信息安全风险评估中,发现其中对财务核心数据的逻辑访问密码长期不变。基于以上现象,下列说法正确的是__(27)__。(27)
A. 该数据不会对计算机构成威胁,因此没有脆弱性
B. 密码和授权长期不变是安全漏洞,属于该数据的脆弱性
C. 密码和授权长期不变是安全漏洞,属于对该数据的威胁
D. 风险评估针对设施和软件,不针对数据
[单选题]在OSI模型中,Ⅳ层提供的服务是( )与对等层实体交换信息来实现的。
A. 利用N-1层提供的服务以及按Ⅳ层协议
B. 利用Ⅳ层提供的服务以及按N-1协议
C. 利用N+1层提供的服务以及N层协议
D. 利用N层提供的服务以及按N+1协议
[单选题]以下SQL 99语句描述的是(59)。CREATE TYPE Employee(
A. name String,
B. ssn integer);
C. CREATE TYPE Manager
D. UNDER Employee(
E. degree String,
F. dept String);
G. 关联关系
H. 嵌套关系
I. 继承类型
J. 聚集关系
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