为你找到 1917 个题目。
以下关于SRAM(静态随机存储器)和DRAM(动态随机存储器)的说法中,正确的是( )。
A. SRAM的内容是不变的,DRAM的内容是动态变化的
B. DRAM断电时内容会丢失,SRAM的内容断电后仍能保持记忆
C. SRAM的内容是只读的,DRAM的内容是可读可写的
D. SRAM和DRAM都是可读可写的,但DRAM的内容需要定期刷新
电子邮件地址“linxin@mail.ceiaec.org”中的linxin、@和mail.ceiaec.org分别表示用户信箱的( )。
A. 帐号、邮件接收服务器域名和分隔符
B. 帐号、分隔符和邮件接收服务器域名
C. 邮件接收服务器域名、分隔符和帐号
D. 邮件接收服务器域名、帐号和分隔符
在Windows系统中,若要将文件“D:\user\my.doc”设置成只读属性,可以通过修改该文件的( )来实现。将文件设置为只读属性可控制用户对文件的修改,这一级安全管理称之为( )安全管理。
第 1 问
A. 属性
B. 内容
C. 文件名
D. 路径名
第 2 问
A. 用户级
B. 目录级
C. 文件级
D. 系统级
The Internet is based on a connectionless end-to-end packet service, which traditionally provided best-effort means of data ( )using the Transmission Control Protocol/Internet Protocol Suite. Although the ( )design gives the Internet its flexibility and robustness, its packet dynamics also make it prone to congestion problems,especially at ( )that connect networks of widely different bandwidths.The initial QoS function set was for internet hosts.One major problem with expensive wide-area( )links is the excessive overhead due to small Transmission Control Protocol packets created by applications such as telnet and rlogin. The Nagle ( ),which solves this issue,is now supported by all IP host implementations.
第 1 问
A. transformation
B. transportation
C. processing
D. progressing
第 2 问
A. connectionless
B. connection
C. connection-oriented
D. connotation
第 3 问
A. hosts
B. switches
C. routers
D. computers
第 4 问
A. interconnection
B. network
C. internet
D. web
第 5 问
A. technology
B. problem
C. structure
D. algorithm