解析 D SMTP(简单邮件传输协议)使用TCP端口25进行可靠邮件传输; FTP(文件传输协议)使用TCP端口21(控制)和20(数据)确保文件传输完整性; TELNET依赖TCP端口23建立远程连接的可靠会话; TFTP(简单文件传输协议)基于UDP端口69,用于无需可靠性的轻量文件传输。 只有TFTP不使用TCP,而是UDP,因此选D。反馈 收藏
Transmission Control Protocol: TCP divides data into data packets that can be sent securely and quickly while minimizing the chance of data loss. It provides a stable and reliable mechanism for the delivery of data packets across an IP-based network. Even though TCP is an effective connection-or...
Devices that cannot connect to the cloud directly through short-range communication use gateway protocols such as Bluetooth, ZigBee, LoRa, etc. Such devices need to be connected to a gateway, which, after conversion, utilizes the TCP/IP protocol to transmit data to the cloud. 1. ZigBee ZigBee...
The main difference between TCP (transmission control protocol) and UDP (user datagram protocol) is that TCP is a connection-based protocol and UDP is connectionless. While TCP is more reliable, it transfers data more slowly. UDP is less reliable but works more quickly. This makes each protocol...
Any packets that arrive out of order, because the segments traveled different paths to reach thedestination, can easily bereordered, since segments use sequence numbers to keep track of the ordering.UDP (User Datagram Protocol)UDPuses a best-effort delivery system, similar to how first class and...
TCP/IP is a family of communication protocols used to connect computer systems in a network. It is named after two of the protocols in the family: Transmission Control Protocol (TCP) and Internet Protocol (IP). Hypertext Transfer Protocol (HTTP) is a mem
网络协议;协定;方案 复数:protocols 同义词 n. procedure,etiquette,code of behaviour,rules,modus operandi 英汉 英英 网络释义 n. 1. 议定书;调查书,始末记 2. (条约等的)草案,草约;(罗马教皇诏书等的)首尾程式 3. 法国外交部的礼宾司 v.
Did you know that beginning with SQL Server 2008, support for service principal names (SPNs) has...Date: 04/02/2008TCP Provider: No connection could be made because the target machine actively refused itIn this post, I am trying to list out potential cause and general solution to this ...
Modbus/TCP: A variant of the Modbus protocol that uses TCP/IP as the transport protocol, commonly used in industrial applications. Wireless M-Bus: A wireless version of the M-Bus protocol, widely used in utility metering applications.
TCP 5190 America Online bgp TCP 179 Border Gateway Protocol, RFC 1163 biff UDP 512 Used by mail system to notify users that new mail is received bootpc UDP 68 Bootstrap Protocol Client bootps UDP 67 Bootstrap Protocol Server chargen