200-301 · Question #1055
How does TFTP operate in a network?
The correct answer is C. Uses block numbers to identify and mitigate data-transfer errors. TFTP operates by using block numbers to manage data transfer, allowing it to identify and mitigate errors in the stream.
Question
Options
- AProvides secure data transfer
- BRelies on the well-known TCP port 20 to transmit data
- CUses block numbers to identify and mitigate data-transfer errors
- DRequires two separate connections for control and data traffic
How the community answered
(65 responses)- A6% (4)
- B3% (2)
- C89% (58)
- D2% (1)
Why each option
TFTP operates by using block numbers to manage data transfer, allowing it to identify and mitigate errors in the stream.
TFTP is a very simple protocol that provides no security features like encryption or authentication for data transfer.
TFTP uses UDP port 69 for data transfer, not TCP port 20 (which is used by FTP data channel).
TFTP operates by dividing data into fixed-size blocks, each assigned a sequential block number, which helps detect duplicate or missing blocks and ensures data integrity during transfer.
TFTP uses a single UDP connection for both control and data traffic, making it connectionless and simpler than protocols like FTP.
Concept tested: TFTP operational characteristics
Source: https://www.rfc-editor.org/rfc/rfc1350
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