●Ipv6 is (71) for "Internet Protocol Version 6"。Ipv6 is the "next generation" protocol design by the IETF to (72) the current version Inernet Protocol,IP Version 4.Most of today's internet uses Ipv4,which is now nearly twenty years old.Ipv4 has been remarkably resilient in spite of its age,but it is beginging to have problems.Most importantly ,there is a growing (73) of Ipv4 addresses,which are needed by all new machines added to the Internet.Ipv6 fixs a number of problems in Ipv4,shch as the (74) number of available Ipv4 addresses.It also adds many improvements to Ipv4 in areas such as souting and network autoconfiguration.Ipv6 is expected to gradually replace Ipv4 ,with the two coexing for a number of years during a transition (75) .
(71) A.short
B.abbreviate
C.abbreviation
D.initial
(72) A.substitution
B.replace
C.switchover
D.swap
(73) A.scarcity
B.lack
C.deficiency
D.shortage
(74) A.restrict
B.limited
C.imprison
D.confine
(75) A.period
B.days
C.epoch
D.phase
第1题
four choices and write down in the answer sheet.
A (66) is basically an end point of a communication link between two applications.Sockets that extend over a network connect two or more applications running on separate computers at tached to the network.A socket (67) two addresses: (68) .Sockets provide a (69) communication channel between one or more systems.
There are stream and datagram sockets separately using TCP and (70) .
(66) A.program
B.UDP
C.socket
D.TCP
(67) A.is made of
B.composed of
C.is composed of
D.is consisted of
(68) A.Email address and IP address
B.MAC address and port address
C.MAC address and IP address
D.port number and IP address
(69) A.full-duplex
B.half-duplex
C.simplex
D.complex
(70) A.FTP
B.UDP
C.IP
D.HTTP
第2题
●DHCP客户端是使用地址 (65) 来申请一个新的IP地址的。
(65) A.0.0.0.0
B.10.0.0.1
C.127.0.0.1
D.255.255.255.255
第3题
●NetXray的功能是 (64) 。
(64) A.捕获并分析数据包
B.发送数据包
C.网络管理查看功能
D.A、B和C
第4题
页时,浏览器首先向 (60) 请求解析http://www.ccidedu.com.cn的IP地址。获得解析后的IP地址后,浏览器通过 (61) 端口与服务器建立 (62) 连接。随后浏览器发送取文件命令 (63) 。服务器响应并将文件index.htm发送给浏览器,最后释放连接。
(59) A.面向事务的客户
B.面向对象的服务器
C.面向事务的客户服务器
D.面向对象的客户服务器
(60) A.网关
B.DNS
C.ISP
D.Web服务器
(61) A.80
B.23
C.25
D.21
(62) A.TCP
B.IP
C.HTTP
D.UDP
(63) A.GET
B.POST
C.REQUST
D.SET
第5题
●以下属于物理层的设备是 (58) 。
(58) A.网桥
B.网关
C.中继器
D.以太网交换机
第7题
果要终止一个ping会话,正确的操作是 (54) 。以下应用中,对网络带宽性能影响最大的应用上 (55) 。OSPF和RIP都是Internet中的路由协议,与RIP相比,OSPF有许多优点,但 (56) 不是OSPF的优点。
(52) A.ping
B.arp-a
C.tracert
D.telner
(53) A.ping
B.traceroute
C.tracert
D.route print
(54) A.Ctrl+Break
B.Ctrl+Alt+8
C.Ctrl+Alt+Del
D.Ctrl+Shift+Del
(55) A.E-mail客户段软件
B.Internet浏览器软件
C.IP电视组播
D.日历软件
(56) A.没有跳步数的限制
B.更快的收敛性
C.扩大了网络规模
D.更低的路由开销
第8题
●以太网100BASE-TX标准规定的传输介质是 (51) 。
(51) A.3类UTP
B.5类UTP
C.单模光纤
D.多模光纤
第9题
●VLAN tag在OSI参考模型的 (50) 实现。
(50) A.物理层
B.数据链路层
C.网络层
D.应用层
第10题
接入点和有线网络的支持,用无线网卡连接的设备之间可以直接进行通信。IEEE 802.11的物理层规定了三种传输技术,即红外技术、直接序列扩频(DSSS)和跳频扩频(FHSS)技术,后两种扩频技术都工作在 (46) 的ISM频段。IEEE 802.11 MAC层具有多种功能,其中分布式协调功能采用的是 (47) 协议,用于支持突发式通信,而用于支持多媒体应用的是 (48) 功能,在这种工作方式下,接入点逐个询问客户端,被查询到的客户端通过接入点收发数据。最新提出的IEEE802.1la标准可提供的最高数据速率为 (49) 。
(45) A.Roaming
B.Ad Hoc
C.Infrastructure
D.DiffuseIR
(46) A.600 MHz
B.800 MHz
C.2.4 GHz
D.19.2 GHz
(47) A.CSMA/CA
B.CSMA/CB
C.CSMA/CD
D.CSMA/CF
(48) A.BCF
B.DCF
C.PCF
D.QCF
(49) A.1 Mb/s
B.2 Mb/s
C.5.5 Mb/s
D.54 Mb/s
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