TCP/IP () layer protocols provide services to the application () running on a computer. The application layer does not define the application itself, but rather it defines () that applications need—like the ability to transfer a file in the case of HTTP. In short, the application layer provides an () between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP () layer consists of two main protocol options—the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP).
to the application () running on a computer.
A.hardware
B.software
C.packet
D.equipment
A.-31
B.-32
C.-64
D.-65
A.编译程序
B.解释程序
C.汇编程序
D.编辑程序
A.GJB
B.IEC
C.GB/T
D.ANSI
以下4种编码方式中,属于不归零编码的是()
A.选项A
B.选项B
C.选项C
D.选项D
A.ARP
B.ICMP
C.OSPF
D.RIP
A.ISDN
B.帧中继
C.PPP
D.HDLC
A.蓝牙
B.窄带微波
C.CDMA
D.蜂窝通信
A.坚持监听
B.二进制指数后退
C.放弃发送
D.向上层报告
HTML中的标记用来定义()
A.一个表格
B.表格中的一行
C.表格行中的一个单元格
D.一个表格头
网页中代码定义了()
A.一个单选框
B.一个单行文本输入框
C.一个提交按纽
D.一个使用图像的提交按纽
A.创建邮件
B.加密邮件
C.发送邮件
D.接收邮件
A.FTP
B.SMTP
C.HTTP
D.POP3
A.浏览器
B.CuteFTP
C.IIS
D.FTP 命令行
A.PGP
B.TLS
C.S/MIME
D.SMTP