解析 D. DNS 题目可能存在翻译或表述错误,正确应为“同时使用TCP和UDP”而非“TCP和IP”(IP为所有协议基础)。逐项分析:A. FTP:仅用TCP(21/20端口)。B. SMTP:仅用TCP(25端口)。C. Telnet:仅用TCP(23端口)。D. DNS:常规查询用UDP(53端口),区域传输等场景用TCP,故同时使用两种协议。答案为D。
dec 2, 2021 tcp and udp are the most widely-used communication protocols in the internet protocol suite. one ensures the data you send is received accurately. the other transfers data quickly. whether an application uses tcp vs. udp depends on the relative importance of accuracy vs. speed. ...
While UDP provides the speed you need to live a comfortable digital life, UDP isn’t as reliable as TCP. This is something to be aware of whensetting up a VPN, because most VPNs run on UDP protocols to keep connection speeds high. Here are some disadvantages of using UDP: It’s conne...
This is very similar to the above tcp. The difference is that this is sending and receiving all packets through kcp (UDP) not TCP. After all, UDP has its own advantages in some aspects, and some important protocols mainly use udp transmission, such as the DNS protocol. One of uses is ...
Which type of firewall can be used to track connectionless protocols such as UDP and RPC? 哪种类型的防火墙可以用来跟踪无连接协议,如UDP和RPC?() A.pplication level firewalls 应用级防火墙B.Circuit level firewalls 电路级防火墙C.Stateful inspection firewalls 状态检测防火墙D.Packet filtering firewalls 包...
（）仲裁：是双方当事人根据国家有关法律的规定或根据他们之间事前或事后达成的协议，自愿地把争议提交第三者(依法建立的仲裁机构)，申请第三者以中间人的身份依法对当事人间发生的争议进行判断，做出裁决，从而解决纠纷的一种法律制度。 根据以上定义，下列陈述中属于仲裁的是( )
please also tell me which routing protocols don't run on cisco 3550 switch? if possible, provide me some good urls for the same. thanks for showing your interest and time. 0 helpful bgp uses tcp as the underlying transport protocol and rip uses udp as the underlying tra...
TCP issues and receives the stream’s control commands and UDP delivers the audio, video, and data tothe streamingserver. Because of the use of these two network communication protocols, an RTSP live stream allows users to begin watching a video while the stream is still being downloaded. ...
SNMP ports are utilized via UDP 161 for SNMP Managers communicating with SNMP Agents (i.e. polling) and UDP 162 when agents send unsolicited SNMP traps to the SNMP Manager. However,SNMP can also run over Transmission Control Protocol (TCP), Ethernet, IPX, and other protocols. ...
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