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Asynchronous Transfer Mode（ATM)is a（16)that promises to change the fabric of local and wid

Asynchronous Transfer Mode(ATM)is a(16)that promises to change the fabric of local and wide area communications.The key advantage of ATM is the capability to move voice, data, graphics and(17)at speeds of up to 2 gigabits per second.An ATM switch allows you to create a(18)network that is completely independent from the(19)configuration of the network.ATM uses a(20)called cell switching to convert data into fixed length cells of 53 bytes each, so they can be switched very quickly and efficiently.

A．technology

B．video images

C．logical

D．physical

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更多“Asynchronous Transfer Mode（ATM…”相关的问题

第1题

The methods used in Asynchronous Transfer Mode （ATM)are switch technology and（17)is used t

The methods used in Asynchronous Transfer Mode (ATM)are switch technology and(17)is used to describe this mode.

A．cell exchange

B．message exchange

C．information exchange

D．packet exchange

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第2题

ATM（Asynchronous Transfer Mode) technology combines connection oriented mechanism and （72

ATM(Asynchronous Transfer Mode) technology combines connection oriented mechanism and (72) mechanism

A.circuit switching

B.packet switching

C.message switching

D.voice switching

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第3题

The methods used in Asynchronous Transfer Mode（ATM)are switch technology and（72)is used to

The methods used in Asynchronous Transfer Mode(ATM)are switch technology and(72)is used to describe this mode.

A．cell exchange

B．message exchange

C．information exchange

D．packet exchange

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第4题

进行设备配置的user-interface的类型包括（)。A.控制台端口（Console port）B.异步串行端口（Asynchro

进行设备配置的user-interface的类型包括()。

A.控制台端口（Console port）

B.异步串行端口（Asynchronous Serial Port）

C.辅助端口（Auxiliary Port）

D.虚拟端口（Virtualuser terminal interface）

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第5题

is a protocol that a host uses to inform. a router when it joins or leaves an Internet

multicast group.(42)is an error detection code that most data communication networks use. (43)is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.(44)is a transfer mode in which all types of information are organized into fixed form. cells on an asynchronous or non-periodic basis over a range of media.(45)is an identifier of a web page.

A．ICMP

B．SMTP

C．IGMP

D．ARP

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第6题

● （66) is a protocol that a host uses to inform. a router when it joins or leaves anIntern

● (66) is a protocol that a host uses to inform. a router when it joins or leaves anInternet multicast group.

(67) is an error detection code that most data conlmunication networks use.

(68) is an interior gateway protocol that uses a distance vector algorithm to propagaterouting information.

(69) is a transfer mode in which all types of information are organized into fixed form. cells on all asynchronous or nonperiodic basis over a range of mediA．

(70) is an identifier of a web page.

(66) A．ICMP

B．SMTP

C．IGMP

D．ARP

(67) A．4B／5B

B．CRC

C．Manchester Code

D．Huffman Code

(68) A．OSPF

B．RIP

C．RARP

D．BGP

(69) A．ISDN

B．x.25

C．Frame. Relay

D．ATM

(70) A．HTTP

B．URL

C．HTML

D．TAG

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第7题

Astute service providers realize that the continued support of legacy X.25 and asynchronou

s network elements using separate operations networks is cost(71). For example, the maintenance of multiple networks can require additional staff. Often, this staff must be trained on multiple vendor technologies, sometimes requiring parallel groups specializing in each(72)Hence, additional maintenance procedures must be maintained and administrative records are(73). The duplication of transport facilities to carry(74)network traffic is an inefficient use of resources. And, not surprisingly, more technologies installed in a central office mean the necessity for more physical space, and an increase in power connections and power consumption. Migration of these(75)network elements to IP-based DCNs is a logical strategy.

A．prohibitive

B．feasible

C．connective

D．special

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第8题

For each blank, choose the best answer from the four choices and write down on the answer

sheet.

(71) is a channel's capacity which directly reflects the data transfer rate of the channel.

(72) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.

(73) is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.

(74) is a transfer mode in which all types of information are organized into fixed form. cells on an asynchronous or non-periodic basis over a range of media.

Ethernet is the popular LAN developed under the direction of the (75).

A．The delay

B．The volume

C．The noise

D．The bandwidth

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第9题

在第四步中，进入虚拟操作台后，在IOS环境下输入了如下的配置，请解释（1)～（4)处的标有下划线部分配

在第四步中，进入虚拟操作台后，在IOS环境下输入了如下的配置，请解释(1)～(4)处的标有下划线部分配置命令的含义(“◇”后为配置内容，“★”和“//”后为注释内容)

★配置服务器信息

◇hostname Cisco 2509 //服务器名称

◇enable secret****** //特权口令

◇ip domain-manl wxx.edu.cn //设置拨号服务器所属域名

◇ip-name-server 202.112.77.2 //设置拨号服务器DNS

(1)(此处有3条下划线)

◇async-bootp subnet-mask 255.255.255.0

◇async-bootp gateway 202.112.77.254

◇async-bootp dns-server 202.112.77.2

★配置Ethenlei Port (略)

★配置动态分配的地址池

◇ip local pool pool2509 202.112.79.1 202.112.79.8 //定义IP地址池

★配置Asynchronous Interface

//异步口是RAS服务器上连接modem，用于用户拨号的端口

◇interface Group-Async 1 //对第一组异步接口进行配置，对异步口的配置可以按组，也

//可以按单个口

group-range 1 8 //划定1到8号异步口属于第一组

encapsulation pap //加载点到点协议

(2)(此处有2条下划线)

ansync dynamic address

ansync default address pool pool2509 //pool2509的定义见“配置动态分配的地址池”部分

PPP authentication pap //设置PPP的验证方式为用户口令方式

★配置router信息

(3)(此处有3条下划线)

◇router rip

network 202.112.77.0

network 202.112.79.0

★配置拨号服务器的缺省路由 (略)

…

★配置存取用户组

◇access-list 1 pormit 202.112.77.0.0.0.255//定义用户组的范围

★配置Asynchronous PORT(略)

★配置vty

◇Iine vty 0 4//配置虚拟终端

(4)(此处有3条下划线)

access-class 1 in //access-class的定义见“配置存取用户组”

pasword ******

login

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