How deeply does Acing the CCNA Exam: Volume 1 Fundamentals and Protocols cover Trivial File Transfer Protocol?

Explains the acknowledgment mechanism and UDP rationale, but defers fuller TFTP coverage.

Trivial File Transfer Protocol

As explained in Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

Trivial File Transfer Protocol is a simple file-transfer protocol that provides its own acknowledgment-based reliability while using UDP.

Trivial File Transfer Protocol (TFTP) transfers files over UDP while supplying reliability at the application layer. The receiver acknowledges every TFTP message, so TFTP does not depend on TCP for reliable delivery. section 22.2.3

This design avoids TCP’s connection and reliability overhead when the file-transfer protocol already manages acknowledgments. TFTP therefore combines UDP’s lower overhead with protocol-specific delivery confirmation. section 22.2.3

Blocking TFTP with an extended ACL

To deny TFTP from the accounting subnet, match UDP destination port 69, permit other traffic, and apply the ACL inbound:

How Acing the CCNA Exam: Volume 1 Fundamentals and Protocols covers it

Cover of Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

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Also explained in

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Acing the CCNA Exam: Volume 2 Advanced Networking and SecurityTrivial File Transfer Protocol is a lightweight application-layer protocol for transferring files, typically without authentication or encryption.

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Related concepts

UDPuses · UDP (User Datagram Protocol) is a connectionless transport-layer protocol that sends datagrams without guaranteeing delivery, ordering, or duplicate suppression.
lock-step communicationuses · Lock-step communication is a sequential exchange in which each message is followed by a wait for the corresponding reply before the next message is sent.
FTPcontrasts with · FTP is an application-layer network protocol for transferring files between networked systems, typically using separate control and data connections.
encryptioncontrasts with · Encryption is the cryptographic transformation of readable data into ciphertext to conceal its contents, reversible through decryption with appropriate information.
client-server architectureuses · A distributed computing pattern in which clients request services or resources from servers, which process the requests and provide results.

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 1 Fundamentals and Protocols. The section links point to the parts of the book it draws on.