Im 341 Module5 Chapter 4

Front 1

Archive

Back 1

A copy of a database, master file, or software that is retained indefinitely as a historical record, usually to satisfy legal and regulatory requirements

Front 2

Backup

Back 2

An extra copy of the most current version of a database, file, or software program that can be used in the event that the original is no longer available

Front 3

Batch Total

Back 3

Summarize important values for a batch of input records

Front 4

Business Continuity Plan (BCP)

Back 4

An option for replacing IT infrastructure that specifies how to resume not only IT operations, but all business processes, including relocating to new offices and hiring temporary replacements

Front 5

Change Control

Back 5

The formal process used to ensure that modifications to hardware, software, or processes do not reduce systems reliability

Front 6

Check Digit

Back 6

Contained in an Authorized ID number and is computed from the other digits

Front 7

Check Digit Verification

Back 7

Performed by data entry devices by using the first 9 digits to calculate the 10th digit each time an IS number is entered

Front 8

Checksum

Back 8

The has of the file calculated by the sending device when data are transmitted - the receiving device does the same calculation and sends the result to the sending device (if the two hashes agree, the transmission is presumed to be accurate and i not the file is resent)

Front 9

Closed-Loop Verification

Back 9

Checks the accuracy of input data by using it to retrieve and display other related information

Front 10

Cold Site

Back 10

An option for replacing IT infrastructure; an empty building that is prewired for necessary telephone and internet access, plus a contract with one or more vendors to provide all necessary equipment within a specified period of time - still leaves the organization without use of its information system for a period of time, so it is appropriate only when the organization's RTO is one day or more

Front 11

Completeness Check

Back 11

A data entry control on each input record that determines whether all required data items have been entered

Front 12

Concurrent Update Controls

Back 12

Prevent errors when two users attempt to update the same record simultaneously by locking out one user until the system has finished processing the transaction entered by the other user

Front 13

Cross-Footing Balance Test

Back 13

Compares the results of the calculated totals produced by each method to verify accuracy

Front 14

Data Matching

Back 14

Two or more items of data must be matched before an action can take place, for example, before paying a vendor, the system should verify that information on the vendor invoice matches information on both the purchase order and the receiving report

Front 15

Differential Backup

Back 15

copies all changes made since the last full backup - each new differential backup file contains the cumulative effects of all activity since the last full backup

Front 16

Disaster Recovery Plan (DRP)

Back 16

Outlines the procedures to restore an organization's IT function in the event that its data center is destroyed by natural disaster or act of terrorism

Front 17

Fault Tolerance

Back 17

The ability of a system to continue functioning in the event that a particular component fails

Front 18

Field Check

Back 18

A data entry control that determines whether the characters in a field are of the proper type

Front 19

File Labels

Back 19

Need to be checked to ensure that the correct and most current files are being updated. Both external labels that are readable by humans and internal labels that are written in machine-readable form on the data recording media should be used

Front 20

Financial Total

Back 20

A form of batch total that sums a field that contains monetary values, such as dollar amount of all sales for a batch of sales transactions

Front 21

Hardwiring

Back 21

checking where formulas contain specific numeric values instead of referencing a cell that contains the current value for the variable

Front 22

Hash Total

Back 22

A form of batch total that sums a nonfinancial numeric field, such as the total quantity ordered field in a batch of sales transactions

Front 23

Header Record

Back 23

A type of internal label located at the beginning of each file and contains the name of the file, expiration date, and other identification data

Front 24

Hot Site

Back 24

An option for replacing IT infrastructure; a facility that is not only prewired for telephone and internet access but also contains all the computing and office equipment the organization needs to perform its essential business activities - a hot site typically results in an RTO of hours

Front 25

Incremental Backup

Back 25

Involves copying only the data items that have changed since the last partial backup - this produces a set of incremental back up files, each containing the results of one day's transactions.

Front 26

Limit Check

Back 26

A data entry control that tests a numerical amount against a fixed value

Front 27

Parity Bit

Back 27

An extra digit added to the beginning of every character that can be used to check transmission accuracy

Front 28

Parity Checking

Back 28

Performed by the receiving device and entails verifying that the proper number of bits are set to the value of 1 in each character received

Front 29

Prompting

Back 29

Where the system requests each input data item and waits for an acceptable response - ensures that all necessary data are entered

Front 30

Range Check

Back 30

A data entry control that tests whether a numerical value falls between predetermined lower and upper limits

Front 31

Real-Time Mirroring

Back 31

Involves maintaining two copies of the database at two separate data centers at all times and updating both copies in real-time as each transaction occurs

Front 32

Reasonable Check

Back 32

A data entry control that determines the correctness of the logical relationship between the two data items

Front 33

Record Count

Back 33

A form of batch total that counts the number of records in a batch

Front 34

Recovery Point Objective

Back 34

Represents the maximum amount of data that the organization is willing to potentially lose when a problem occurs

Front 35

Recovery Time Objective

Back 35

Represents the length of time that the organization is willing to attempt to function without its information system

Front 36

Redundant Array of Independent Drives (RAID)

Back 36

Data is written to multiple disk drives simultaneously - if one disk fails, the data can be readily accessed from another

Front 37

Redundant Data Checks

Back 37

Used to ensure that the correct master file record is updated

Front 38

Sequence Check

Back 38

Tests whether a batch of input data is in the proper numerical or alphabetical sequence

Front 39

Sign Check

Back 39

A data entry control that determines whether the data in a field have the appropriate arithmetic sign

Front 40

Size Check

Back 40

A data entry control that ensures that the input data will fit into the assigned field

Front 41

Trailer Record

Back 41

Located at the end of the file and contains the batch totals calculated during input

Front 42

Transposition Error

Back 42

Where two adjacent digits were inadvertently reversed

Front 43

Turnaround Document

Back 43

A record of company data sent to an external party and then returned by the external party to the system input - improve accuracy by eliminating the potential for input errors when entering data manually;

example: utility bill

Front 44

Uninterruptible Power Supply

Back 44

A system that provides protection in the event of a prolonged power outage, using battery power to enable the system to operate long enough to back up critical data and safely shut down

Front 45

Validity Check

Back 45

A data entry control that compares the ID code or account number in transaction data with similar data in the master file to verify that the account exists

Front 46

Zero-Balance Test

Back 46

Applies the same logic to control accounts