Posted by: Pdfprep Category: MTCNA Tags: MTCNA - MikroTik Training, MTCNA exam questions, MTCNA practice exam Post Date: February 7, 2021 Pdfprep2021-02-07T21:50:04+00:00 Domain name system (DNS) requests can use protocol/port:A . UDPB . TCP port 53 View Answer Answer: A,B Prev QuestionNext Question Author Pdfprep