Question

What is the destination port number used in a TFTP file transfer?

o

a.

23

o

b.

69

o

c.

21

o

d.

161

The correct answer is b. TFTP uses the well-known port of 69. Answer a incorrect, because port 23 is used by Telnet. Answer c is incorrect, because port 21 is used by FTP. Answer d is incorrect, because SNMP uses UDP port 161.

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