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Which of the following protocols provides a reliable service for transferring files between systems using TCP?
SNMP
TFTP
DHCP
DNS
FTP
File Transfer Protocol (FTP) is used to transfer files between devices. To provide reliable transfers, FTP uses layer 4 TCP protocol. Trivial File Transfer Protocol (TFTP) provides and unreliable transfer of files, with much less functionalities than FTP but faster. DNS resolves host names to IP address. DHCP is used for dynamic host configuration. Simple Network Management Protocol (SNMP) is an application layer protocol which provides a message format for agents on different devices to communicate with network management stations. For more information refer to: [Todd Lammle. - CCNA Routing and Switching Study Guide 2013, Chapter 3]
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