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21 hash algorithm
"An algorithm that produces a hash value of some piece of data, such as a message or session key. With a good hash algorithm, changes in the input data can change every bit in the resulting hash value; for this reason, hashes are useful in detecting any modification in a data object, such as a message. Furthermore, a good hash algorithm makes it computationally infeasible to construct two independent inputs that have the same hash. Typical hash algorithms include MD2, MD4, MD5, and SHA-1." -
22 hash function
"An algorithm that produces a hash value of some piece of data, such as a message or session key. With a good hash algorithm, changes in the input data can change every bit in the resulting hash value; for this reason, hashes are useful in detecting any modification in a data object, such as a message. Furthermore, a good hash algorithm makes it computationally infeasible to construct two independent inputs that have the same hash. Typical hash algorithms include MD2, MD4, MD5, and SHA-1." -
23 checksum
"A calculated value that is used to test data for the presence of errors that can occur when data is transmitted or when it is written to disk. The checksum is calculated for a given chunk of data by sequentially combining all the bytes of data with a series of arithmetic or logical operations. After the data is transmitted or stored, a new checksum is calculated in the same way using the (possibly faulty) transmitted or stored data. If the two checksums do not match, an error has occurred, and the data should be transmitted or stored again. Checksums cannot detect all errors, and they cannot be used to correct erroneous data." -
24 TLV
"A method of organizing data that involves a Type code (16 bit), a specified length of a Value field (16 bit), and the data in the Value field (variable)." -
25 range chart
A type of chart that displays a set of data points that are each defined by multiple values for the same category. Values are represented by the height of the marker as measured by the value axis. Category labels are displayed on the category axis. The plain range chart fills in the area between the top and bottom value for each data point. -
26 reference type
"A data type that is represented by a reference (similar to a pointer) to the type's actual value. If a reference type is assigned to a variable, that variable references (or ""points to"") the original value. No copy is made. Reference types comprise classes, interfaces, delegates, and boxed value types." -
27 RAID-5 volume
"A fault-tolerant volume with data and parity striped intermittently across three or more physical disks. Parity is a calculated value that is used to reconstruct data after a failure. If a portion of a physical disk fails, Windows recreates the data that was on the failed portion from the remaining data and parity. You can create RAID-5 volumes only on dynamic disks on computers running the Windows 2000 Server or Windows Server 2003 families of operating systems. You cannot mirror or extend RAID-5 volumes. In Windows NT 4.0, a RAID-5 volume was known as a striped set with parity." -
28 minimum TTL
"In DNS, a default Time to Live (TTL) value that is set in seconds and used with all resource records in a zone. This value is set in the start of authority (SOA) resource record for each zone. By default, the DNS server includes this value in query responses. It is used to inform recipients how long they can store and use resource records, which are provided in the query answer, before they must expire the stored records data. When TTL values are set for individual resource records, those values override the minimum TTL." -
29 input cell
"The cell in which each input value from a data table is substituted. Any cell on a worksheet can be the input cell. Although the input cell does not need to be part of the data table, the formulas in data tables must refer to the input cell." -
30 sort order
"A way to arrange data based on value or data type. You can sort data alphabetically, numerically, or by date. Sort orders use an ascending (1 to 9, A to Z) or descending (9 to 1, Z to A) order." -
31 calculated field
A field defined in a query that displays the result of an expression rather than displaying stored data. The value is recalculated each time a value in the expression changes. -
32 unsigned integer
"A data type that can only hold a whole number with a value greater than, or equal to, zero. In this implementation, the maximum value that an unsigned integer can hold is 0xFFFFFFFF (4,294,967,295)." -
33 SharePoint list indicator
"The title of a dialog page that enables the user to set up a SharePoint list indicator by setting name, description, list URL, indicator value, indicator appearance, etc. The indicator value can be specified based on number or percentage of certain column values, or certain aggregate data." -
34 Time to Live
A timer value included in packets sent over TCP/IP-based networks that tells the recipients how long to hold or use the packet or any of its included data before expiring and discarding the packet or data. -
35 TTL
A timer value included in packets sent over TCP/IP-based networks that tells the recipients how long to hold or use the packet or any of its included data before expiring and discarding the packet or data. -
36 sql_variant
"A data type that stores values of several data types, except for text, ntext, image, timestamp, and sql_variant types. It is used in a column, parameter, variable, or return value of a user-defined function." -
37 type inference
A process in which the compiler determines the data type of a local variable that has been declared without an explicit data type declaration. The type is inferred from the initial value provided for the variable. -
38 numerical
[nju:΄merikl] a թվային, թվանշանային, թվի. numerical data թվային տվյալներ. numerical superiority թվային գերազանցություն. հմկրգ. numerical control (NC) թվային ծրագրային կառավարում. numerical data թվային տվյալներ. numerical error թվային սխալ. numerical value թվային արժ եք -
39 confirm
To acknowledge an action or the value of some data (e.g. password) by definite assurance.يؤكّد -
40 frame
"In synchronous communications, a package of information transmitted as a single unit. Every frame follows the same basic organization and contains control information, such as synchronizing characters, station address, and an error-checking value, as well as a variable amount of data."
См. также в других словарях:
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