下列叙述中最确切的是( )。
分时操作系统的主要特点是(18)。
在下列对通用串行总线(USB)接口特点的描述中,不正确的描述是(7)。
The Programming languages are designed to(74)the communication between human and computers.
IPv4地址可划分为{网络号,主机号}两部分。如果用0表示所有比特为0,用-1表示所有比特为1,则以下选项中,地址(27)只能用于内部网络。
一个进程被唤醒,意味着(17)。
为了支持简体中文,XML声明中encoding属性的值应该设置为(56)。
采用telnet 202.110.101.34命令不能访问服务器,原因不可能是(49)。
Both bus and tree topologies are characterized by the use of multipoint (71) .For the bus,all stations attach,through appropriate hardware (72) known as a tap,directly to a linear transmission medium,or bus.Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the (73) .A transmission from any station propagates the length of the medium in both directions and can be received by all other (74) .At each end of the bus is a (75) ,which absorbs any signal,removing it from the bus.
A word processor enables you to create a(66), store it electronically on a disk, display it on a screen, modify it by entering commands and characters from the keyboard, and print it on a printer.
下面哪个对象必须要有lock和unlock方法以确保多个用户无法同时改变某一同性______。
尽管Windows NT操作系统的版本不断变化,但是从它的网络操作与系统应用角度来看,有两个概念是始终不变的,那就是工作组模型与______。
发送方是通过(26)来识别接收方的多个接收者。
(24)是构成我国保护计算机软件著作权的两个基本法律文件。
按照IPv6的地址表示方法,以下地址中属于lPv4地址的是(36)。
Routers perform the decision process that selects what path a packet takes.These(71)layer devices participate in the collection and distribution of network一layer information, andperform Layer 3 switching based on the contents of the network layer(72)of eachpacket.You can connect the routers direct1y by point一to一point(73)or local一area networks, or you can connect them by LAN or WAN switches.These Layer 2 switches unfortunately donot have the capability to hold Layer 3(74)information or to select the path taken by apacket through analysis ofits Layer 3 destination address.Thus, Layer 2 switches cannot beinvolved in the Layer 3 packet(75)decision process.
当前SNMP管理体系结构中的核心是MIB-2。MIB-2是由(63)维护的。
美国甲公司生产的平板计算机在其本国享有“A”注册商标专用权,但未在中国申请注册。我国乙公司生产的平板计算机也使用“A”商标,并享有我国注册商标专用权,但未在美国申请注册。美国甲公司与我国的乙公司生产的平板计算机都在我国市场上销售。此情形下,依据我国商标法(18)商标权。
为了确保国家标准的时效性,需要对标准进行复审,复审后修订的国家标准______。
下图为Web站点的默认网站属性窗口,要指定网站的启动文件,需要在______选项卡中进行配置。
