View example sentences, synonyms and word forms for Checksum.
Checksum meaning
A number, derived by applying a suitable algorithm to some data, used to check whether errors have occurred in transmission, storage or data entry.
Synonyms of Checksum
Example sentences (20)
In IPv4, UDP may actually have a checksum of 0, indicating no checksum; IPv6 requires a checksum in UDP.
For example, file servers often provide a pre-computed MD5 (known as md5sum ) checksum for the files, so that a user can compare the checksum of the downloaded file to it.
For purposes of computing the checksum, the value of the checksum field is zero.
Hashing with checksum functions One can adapt certain checksum or fingerprinting algorithms for use as hash functions.
RFC 791 defines the checksum calculation: The checksum field is the 16-bit one's complement of the one's complement sum of all 16-bit words in the header.
The checksum is optional under IPv4, only, because the Data-Link layer checksum may already provide the desired level of error protection.
The effect of a checksum algorithm that yields an n-bit checksum is to map each m-bit message to a corner of a larger hypercube, with dimension m+n.
This feature may cause packet analyzers detecting outbound network traffic upstream of the network adapter that are unaware or uncertain about the use of checksum offload to report invalid checksum in outbound packets.
To assure correctness a checksum field is included; see checksum computation section for details on checksumming.
When a packet arrives at a router, the router calculates the checksum of the header and compares it to the checksum field.
While computing the checksum, the checksum field itself is replaced with zeros.
With this checksum, any transmission error which flips a single bit of the message, or an odd number of bits, will be detected as an incorrect checksum.
A chunk consists of four parts: length (4 bytes), chunk type/name (4 bytes), chunk data (length bytes) and CRC (cyclic redundancy code/checksum; 4 bytes).
Android ROMs also use this type of checksum.
An IP packet has no data checksum or any other footer after the data section.
A single-bit transmission error then corresponds to a displacement from a valid corner (the correct message and checksum) to one of the m adjacent corners.
A widely used convention is to make the two characters preceding ETX a checksum or CRC for error-detection purposes.
Both UDP and TCP have checksum fields.
By contrast, in order to increase performance, and since current link layer technology is assumed to provide sufficient error detection, RFC 1726 section 6.2 the IPv6 header has no checksum to protect it.
Checksums main A checksum of a message is a modular arithmetic sum of message code words of a fixed word length (e.