Home › CompTIA Security+ Certification Which of the following is the default port for TFTP? By · Tuesday, January 03, 2017 Which of the following is the default port for TFTP? A. 21 B. 69 C. 20 D. 68 Answer B. 69 CompTIA Security+ Certification CompTIA Security+ SY0-401 Certification SY0-401 Certification GA Gaurav Arora, Digital Media Lead. 10+ years running paid media and tracking for brands in the USA, UK and Canada.