基于UDP的应用层协议是()。

【名词&注释】

公共利益(public interest)、应用领域(application field)、视频信号(video signal)、基本知识(basic knowledge)、有关规定(related regulations)、作品复制件(copies of works)、软件著作权人、财产权。、程序语言转换(programming language transformation)、固定比特率(fixed ammonia bit rate)

[单选题]基于UDP的应用层协议是()。

A. SMTP
B. TELNET
C. HTTP
D. TFTP

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学习资料：

[单选题]●利用Access中的查询向导不能创建 (64) 。(64)

A. 选择查询
B. 重复项查询
C. 交叉表查询
D. 参数查询

[单选题]下列权利，不属于软件著作财产权的是(15)。

A. 复制权
B. 署名权
C. 发行权
D. 翻译权

[单选题]下列数中最小的数为______。

A. (00100110)2
B. (01010010)BCD
C. (85)16
D. (125)8

[单选题]ATM高层定义了4类业务，压缩视频信号的传送属于______类业务。

A. CBR
B. VBR
C. UBR
D. ABR

[单选题]

B． RTTP C． FTP D． NNTP

A. RTPB． RTTP
B. FTP
C. NNTP

[单选题]Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises ease network management and decreases(66)by converging a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(67)tremendous amounts of money in long distance phone bills, provided that solution delivers POTS-like voice(68)over the Internet.VOIP gateways are designed to convert voice from the(69)domain to the circuit switched domain. VOIP solutions use a digital signal processor(DSP)to process the voice data, preparing the voice sample for transmission by compressing voice and removing jitter. The VOIP equipment must comply with the(70)H.323 standard defined by the International Telecommunication Union, or ITU.

A. time
B. cash
C. costs
D. space

[单选题]在OSI参考模型中，网络层处理的数据单位是(25)。

A. 比特
B. 帧
C. 分组
D. 报文

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