Question Detail ICMP works on which layer Physical LayerDatalink LayerNetwork layerTransport Layer Answer: Option C Ad Similar Questions : 1. Which protocol uses window flow system UDPTCPFTPNone of above Answer: Option B 2. 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 3. Which layer will be used while transmitting data using FTP or Telnet PresentationApplicationSessionTransport Answer: Option B 4. Which protocol finds the MAC address from IP address SMTPICMPARPRARP Answer: Option C 5. Telnet allows user to connect client machinetransferring filessharing filesnone of above Answer: Option A Read more from - TCP-IP Questions Answers