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- ame. Relay is simplified form. of&n
- bsp;(71) ,similar in prin
- ciple to (72) , in which synchronous, frames of
- data are routed to different destinations depending on header information ．Packets are routed throught one or more Virtual Circuits known as (73) ．Most Virtual Circuits are (74) ,which means that the network provider sets up all DLCI c
- B．Datagram Routing
- C． Packet Switching
- D．packet Routing (72) A． X ．21
- B．X ．25
- C．X ．28
- D．X ．29 (73) A． DLCIs
- an
- be inter
- connecte
- d by different devices．In the physical layer，networks can be connected by (66) or Hubs，which just move the bits from one network to an identical network．One layer up we find bridgas and swiehes,which operate at data link layer．They can acc
- B．relays
- C．connects
- D．modems (67) A．frames
- B．bytes
- C．packages
- D．cells (68) A．special
- A.TCP
- B.UDP
- C.IP
- D.IPX
- A．CMIS &n
- bsp; B．
- CMIP机
- C．CMIP
- D．MIB-2
- AC地址和IP地址绑定在一起的方法是在&n
- bsp;(60) 文件中添加"host主机名{hardware Ethernet xx．xx．xx．xx．xx．xx fixed-address 192．168．0．9}"配置项；创建DH
- CP租用文件的命令是 (61) ；通过运行 (62) 命令可以设置在操作系统启动时自动运行
- DHCP服务。 (58) A．为客户自动进行注册
- B．为客户机自动配置IP地址
- C．使DNS名字自动登录
- D．为WINS提供路由 (59) A．／etc／networks／dhcpd
- B．／usr／sbin／dhcp
- C．／etc／networks／dhcp
- D．／usr／sbin／dhcpd (60) A．／etc／dhcp
- A．地址欺骗 &n
- bsp; B．缓冲区溢出
- C．强力攻击
- D．拒绝服务
- A．Novell Netware &n
- bsp; B．Mi
- crosoft Win
- dows NT Server
- C．IBMLAN Server
- D．Microsoft Windows For Workgroup
- A．管理员 &n
- bsp; B．管理代理
- C．管理信息数据库
- D．代理服务设备
- A．编码 &n
- bsp; B．数据缓冲
- C．数据转换
- D．路由选择
- A．鉴别技术 &n
- bsp; B．防火墙技术
- C．加密策略
- D．回拨技术 (51) A．手写签名
- B．数据完整性机制
- C．数字签名机制
- D．加密机制 (52) A．由客户机和服务器协同完成任务
- B．将应用程序下载到本地执行
- C．在服务器端，每次只能为一个客户服务
- D．许多终端共享主机资源的多用户系统 (53) A．物理层、数据链路层、网络层
