Error rate

A computed value that depends on the contents of a packet. This value is sent along with the packet when it is transmitted. The receiving system computes a new checksum based on receiving data and compares this value with the one sent with the packet. If the two values are the same, the receiver has a high degree of confidence that the data was received correctly. Value computed on data to detect error or manipulation during transmission. (. See hash total. )
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A string of characters entered by a subject as an authentication factor. A word or string of characters that authenticates a user, a specific resource, or an access type. Protected/private string of letters, numbers, and special characters used to authenticate an identity or to authorize access to data.
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A checksum used to verify the integrity of a transmission. See also cyclic redundancy check (CRC). A total of the values on one or more fields, used for the purpose of auditability and control. Value computed on data to detect error or manipulation. (. See checksum. )
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To verify the identity of a user, user device, or other entity, or the integrity of data stored, transmitted, or otherwise exposed to possible unauthorized modification in an automated information system, or establish the validity of a transmitted message. To verify the identity of a user, user device, or other entity, or the integrity of data stored, transmitted, or otherwise exposed to unauthorized modification in an information system, or to establish the validity of a transmission.
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A mechanical, electrical, or electronic device that opens or closes circuits, completes or breaks an electrical path, or selects paths or circuits. A switch looks at incoming data to determine the destination address. Based on that address, a transmission path is set up through the switching matrix between the incoming and outgoing physical communications ports and links. A network device that is an intelligent hub because it knows the addresses of the systems connected on each outbound port. Instead of repeating traffic on every outbound port, a switch repeats only traffic out of the port on which the destination is known to exist. Switches offer greater efficiency for traffic delivery, create separate broadcast and collision domains, and improve the overall throughput of data.
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