《四川大学计算机网络期末复习重点(朱敏)》.doc

Translation（从中抽出１０个来） OSPF：开放式最短路径优先open shortest path first) CSMA/CD：载波监听多路访问/冲突检测carrier sense multiple access/collision detect) Qos:服务质量Quality of Service) ICMP: Internet控制报文协议Internet Control Message Protocol) BGP: 边界网关协议（Border Gateway Protocol ） 内部网关协议 (interior Gateway Protocols) 外部网关协议（Exterior Gateway Protocol） 波分复用Wavelength Division Multiplexing) DSL:数字用户环路Digital Subscriber Line) CRC: 循环冗余校验（Cyclic Redundancy Check） 动态主机设置协议（Dynamic Host Configuration Protocol WFQ：加权公平排队(Weighted Fair Queuing) 确认字符?(Acknowledge Character） 域名系统 (Domain Name System)? 超文本传输协议(Hypertext Transfer Protocol) 简单邮件传输协议（Simple Mail Transfer Protocol） 用户数据报协议User Datagram Protocol） TCP：传输控制协议Transmission Control Protocol?） RIP：路由信息协议Routing Information Protocol） 局域网Local Area Network） RTT：往返时延(Round-Trip Time) WEB cache：web缓存 P2p：等互联网络技术peer-to-peer) Sockets:套接字 Bandwidth：带宽 Persistent HTTP：持续性连接 Access Network：接入网 Flow Control：流量控制 Congestion Control：拥塞控制 Choice Which application’s NOT using TCP? SMTP B. HTTP C.DNS D. All of them What are the advantages of Distance Vector Routing over Link State Routing? Changes faster, especially when links go down Requires less computation in each router The computed routers are of better quality Requires more information to be exchanged by the routers What are the advantages of copper wire over optic fiber? Higher bandwidth Longer range Cheaper interfaces Harder to eavesdrop on Which protocols do not include checksum header field? IPV4 B. IPV6 C. TCP D.UDP IP4 address: Is 64 bits long Is 128 bits long Is hierarchical, consisting of network part and host part Is unique in the whole world, i.e. no two machines are ever have the same IP address Which of the following services does TCP provide? Guaranteed bandwidth B. Guaranteed delay C. Flow control D. Out of order Ethernet uses the following limitations in order for Collision Detection to work: Maximum frame length is 2000 bytes Maximum frame length is 46 bytes Maximum frame length is