Which of the following ports should a network technician open on a firewall to back up the configuration and operating system files of a router to a remote server using the FASTEST method possible?
A.
UDP port 22 B.
TCP port 22 C.
TCP port 25 D.
UDP port 53 E.
UDP port 69
E.
Which of the following ports should a network technician open on a firewall to back up the configuration and operating system files of a router to a remote server using the FASTEST method possible?
A.
UDP port 22
B.
TCP port 22
C.
TCP port 25
D.
UDP port 53
E.
UDP port 69
E.
The correct answer to the question is E. UDP port 69.
The File Transfer Protocol (FTP) is commonly used to transfer files between a router and a remote server. However, FTP uses two separate channels for its data and control connections, which can be blocked by a firewall.
Trivial File Transfer Protocol (TFTP) is a simpler version of FTP that only uses one connection for both data and control. TFTP is often used to back up the configuration and operating system files of a router to a remote server.
TFTP uses UDP port 69 to transfer files between the router and the server. UDP is a connectionless protocol that provides faster transfer rates than TCP because it does not require a connection setup and teardown process.
Therefore, the fastest method to back up the configuration and operating system files of a router to a remote server is to open UDP port 69 on the firewall to allow TFTP traffic.