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Information Technology CPA > Chapter 2 > Flashcards

Chapter 2 Flashcards

1
Q

What is an input?

A

How data gets conveyed from the outside world into the computer

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2
Q

What is processing?

A

How the computer takes the data that it receives and deals with it.

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3
Q

What is output?

A

How data is conveyed to the user

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4
Q

What is Moore’s Law?

A

Components on silicon chips performance doubles every 18-24 months.

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5
Q

What is Metcalf’s law

A

Usefulness of a network increases by the square of the number of nodes of it.

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6
Q

What is a Network interface card

A

Device inside the computer that allows computers to connect to a network and the internet.

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7
Q

What is a BUS LAN topology

A

All of the deivces on the LAN are connected to a central cable or backbone.

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8
Q

What is a ring LAN?

A

Each device is connected to two others, one on either side.

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9
Q

What is a star LAN?

A

All devices are connected to a central hub.

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10
Q

What language protocol does Internet use?

A

TCP/IP

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11
Q

What language protocol do webpages use?

A

HTTP and HTML

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12
Q

What are CAT 5 and 6 wires used for?

A

Ethernet networks.

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13
Q

What quality of wiring should companies invest in?

A

The best since they may need the higher capacity in the future.

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14
Q

What is a router

A

Forwards data packets based on their IP.

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15
Q

What is a bridge?

A

Connects device to LAN by looking at MAC address. Looks at the end destination.

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16
Q

What is a HUB?

A

HUB has multiple ports and takes data in from one port and rebroadcasts them out on all the other ports.

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17
Q

What are switches? What type of device are they?

A

Smart devices that sends out data based on the port where it should go.

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18
Q

What is a gateway?

A

Connects networks that use different protocols to communicate

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19
Q

What is a PAN

A

Personal Area Network

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20
Q

What is the largest WAN?

A

The internet

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21
Q

When does a WAN become a MAN

A

A WAN that is found within a single metropolitian area is categorized as a MAN.

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22
Q

What is the data system that Google uses?

A

BIG Table

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23
Q

What is the type of storage used to store images?

A

BLOB (binary large object)

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24
Q

What is DDL? What do they do?

A

Data definition language that makes changes to the structure of the database by adding columns but not rows.

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25
Q

What is Data query language used for?

A

(C.R.U.D) Create retrieve Update Delete

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26
Q

What is a data mart?

A

A collection of data for a department or specific area of business.

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27
Q

What is OLAP? What do they do?

A

Online analytic processing - provides quick response to complex queries using the data stored in a data warehouse.

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28
Q

What do Online transaction processing do and what do they feed?

A

Provide data to a data warehouse and feeds the data used in OLAP.

29
Q

What is an Entity relationship (ER) diagram?

A

Gives a conceptual representation of the structure of the data, which can be translated into a physical database.

30
Q

What must each entity have?

A

An identifier.

31
Q

What is a one to many relationsip

A

For every instance in entity 1, there may be multiple instances in entity 2.

32
Q

What is metadata?

A

Data about data. Data dictionary.

33
Q

What is system development life cycle?

A

End to end set of processes required to develop information systems.

34
Q

What are the 7 steps of SDLC?

A
  1. Requirements
  2. Design
  3. Code/build
  4. Testing
  5. Implementation
  6. Verification
  7. Post implementation review
35
Q

What is a waterfall SDLC approach

A

Complete one stage before moving onto the next.

36
Q

What is a rapid application development model?

A

Developer presents what they have and takes feedback to improve to meet the end users needs.

37
Q

What is agile software development model?

A

Small changes are made for continuous testing and adapting to changes. Good approach when requirements aren’t completely known in advance.

38
Q

What is a Gantt chart

A

Visual representation of the tasks and key days that comprise a project.

39
Q

What are slack days?

A

The difference between working days and effort days.

40
Q

What are effort days?

A

The effort required to complete different tasks.

41
Q

What are working days?

A

The number of possible work days between the start and end.

42
Q

What are elapsed days?

A

Difference between the current date and the start date.

43
Q

What is shown in a level 1 map?

A

The high-level processes and specifics of the inputs/outputs are identified.

44
Q

What is a level 2 process map?

A

Details diagram created for every sub-process identified in the level 1 diagram.

45
Q

What is a RACI chart used for

A

To identify the roles and responsibilities during a change process.

46
Q

What is an informed group.

A

People who are notified that a task is completed, but are not consulted.

47
Q

What are swim lanes?

A

Process mapping and flow charts for what each department is responsible for.

48
Q

What are the main areas of review for a post implementation review

A
  • Performance is evaluated.
  • Systems- development life cycle is reviewed.
    Actual operating costs compared with the estimated costs.
49
Q

What type of business model is Ebay?

A

Consumer to Consumer

50
Q

What type of business model is Amazon

A

Business to consumer

51
Q

What is Electronic data interchange used for?

A

Exchange of information in a predetermined formant without human intermediary. Intended for long term relationships.

52
Q

What is XML and why is it replacing EDI

A

XML is concerned with the contents of the data and can be used in templates that can transport data to and from organizations.

53
Q

XML transmits data that is between which two symbols

A
54
Q

What type of decision making requirements are of line-level staff

A

Operational decisions that ensure the jobs are done.

55
Q

Who uses information systems that support tactical decision making

A

Middle level management.

56
Q

What is top level management information system focused on

A

Support the attainment of competitive advantage for the firm, and are focused on strategic decision making.

57
Q

What is DSS

A

Decision support system used to provide users with graphical information analysis and used for unstructured decision making at the top management level.

58
Q

What is TPS

A

Transaction processing system. Process transaction to complete business units of work.

59
Q

What are the two types of processing?

A

Batch and Real-time processing

60
Q

What is an expert system?

A

Designed to emulate an experts decision making process.

61
Q

What is enterprise resource planning

A

Integrating applications onto a single platform and into a single database, to support business.

62
Q

What is customer relationship management?

A

Capture information from interactions from customers to mine and leverage customer behavior.

63
Q

What are the three most common information systems?

A

Transaction processing systems, decision support systems, database management systems

64
Q

What part of an email would be considered metadata?

A

The subject line

- Would tell you what the email is about. Data about data.

65
Q

What are subset categories of IT?

A

Enterprise software and telecom services.

66
Q

The entire set of technologies used for information processing describes what?

A

Information technology

67
Q

What are the 3 main duties of business intelligence?

A
  • Supply Chain management
  • Enterprise resource planning
  • Customer relationship management
68
Q

What is supply chain management?

A

Management applied to movement of goods between partnering organization from the point of origin to the customer.

69
Q

What is topology?

A

The geometric arrangement of devices on the network.

Information Technology CPA (4 decks)

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