Question Detail Which protocol uses both TCP and UDP FTPSMTPTelnetDNS Answer: Option D Similar Questions : 1. Which company developed TCP/IP protocol for networking IBMDECDARPAXerox Answer: Option C 2. TCP/IP suite was created by IEEEDepartment of defenceOpen sourceNone of above Answer: Option B 3. Which layer of TCP/IP stack is equivalent to transport layer of OSI Application layerHost to Host layerInternetNetwork access Answer: Option B 4. TCP/IP reference model contains how many layers 3467 Answer: Option BExplanation:TCP/IP reference model has four layer Application Layer Host to Host Internet Layer Network Access 5. Which protocol uses window flow system UDPTCPFTPNone of above Answer: Option B Read more from - TCP-IP Questions Answers