Question: 15. Host A receives a frame and discards it after determining that it is corrupt. At which OSI layer are frames checked for errors? (Multiple

15. Host A receives a frame and discards it after determining that it is corrupt. At which OSI layer are frames checked for errors? (Multiple choice question) O o Application Network 0 Physical Data link FSC or CRC 16. Identify which of the services below use both TCP and UDP ports: (Multiple choice question) FTP O O O O TFTP O DNS O SSH O TELNET
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