RAID级别是指磁盘阵列中硬盘的组合方式,不同级别的RAID为用户提供的磁盘阵列在性能上和安全性的表现上也有不同。以下(33)是目前最高档次的磁盘阵列。
以下关于ICMP协议的说法中,正确的是__________。(2012年下半年试题)
地址码长度为二进制24位时,其寻址范围是(3)。
在IP协议的数据报报头中,与分片和重新组装无关的字段有__________。
能显示IP、ICMP、TCP、UDP统计信息的Windows命令是(42)。
在分布式环境中实现身份认证可以有多种方案,以下选项中最不安全的身份认证方案是(45)。
安全电子邮件协议PGP不支持(40)。
可以把所有使用DHCP协议获取IP地址的主机划分为不同的类别进行管理。下面的选项列出了划分类别的原则,其中合理的是__________。(2009年上半年试题)
分组交换与报文交换在形式上的主要区别在于__________。
M软件公司的软件产品注册商标为M,为确保公司在市场竞争中占据优势,对员工进行了保密约束。此情形下该公司不享有__________。(2012年下半年试题)
在运行IP协议的网络层为其高层用户提供的服务中,当发生错误时,没有机制保证一定可以通知发送方和接收方,这种服务称为(54)。
一个Lan拓扑可以使用令牌传递或CSMA/CD控制媒体访问,其拓扑属于下列的(69),若仅使用像令牌传递这样的确定性媒体控制方法,其拓扑属于下列的(70)。
Although the bulk of industry resources and energies have focused on developing the fastest(71)or slickest(72)more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas of input devices,(73)processing and vitual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the(74)as invisible as possible.(75)represents the next evolutionary step for the interface.
下列关于软件著作权中翻译权的叙述不正确的是:翻译权是指__________的权利。(2011年上半年试题)
计算机系统中的信息资源只能被授予权限的用户修改,这是网络安全的(25)。
Bluetooth is a universal radio interface in the(71)frequency hand that enables portable electronic devices to connect and communicate wirelessly via short-range, ad hoc networks. Each unit can simultaneously communicate with up to(72)other units per piconet. Moreover, each unit can simultaneously(73)to several piconets. Eliminates the need for wires, cables and connectors for and between cordless or mobile phones, modems, headsets, PDAs, Computers, printers, projectors, local area networks, and so on, and paves the way for new and completely different devices and applications. Technology Characteristics(74)symbol rate exploits maximum available(75)bandwidth。
符合V.90建议的Modem数据速率可达__________。
FTP协议是Internet常用的应用层协议,它通过(56)协议提供服务,它是基于Client/Server结构通信的,作为服务器一方的进程,通过监听(57)端口得知有服务请求。在一次会话中,存在(58)个TCP连接。另一个简单的文件传输协议是(59),它的特点是使用UDP协议,且(60)。
使用路由器对局域网进行分段的好处是__________。(2013年上半年试题)
In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.In low-speed network, it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high-speed networks, this approach often works poorly, because in the(71)between sending the notification and notification arriving at the source, thousands of additional(72)may arrive. In ATM network, a major tool for preventing(73)is(74)control. When a host wants a new virtual(75), it must describe the traffic to be offered and the service expected.