Question Detail Which protocol uses both TCP and UDP FTPSMTPTelnetDNS Answer: Option D Ad Similar Questions : 1. Which company developed TCP/IP protocol for networking IBMDECDARPAXerox Answer: Option C 2. Which protocol ensures reliable delivery TCPUDPBoth of above None of above Answer: Option A 3. Which protocol finds the MAC address from IP address SMTPICMPARPRARP Answer: Option C 4. TCP/IP suite was created by IEEEDepartment of defenceOpen sourceNone of above Answer: Option B 5. Which class is given wrong here ? CLASS A = 1 to 126CLASS B = 128 to 191CLASS C = 192 to 220CLASS D = 224 to 239 (Multicasting)CLASS E = 240 to 255 (Research) Answer: Option CExplanation:CLASS C is from 192 to 223 Read more from - TCP-IP Questions Answers