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Intro to IT - WGU > C182 > Flashcards

C182 Flashcards

1
Q

What is the purpose of SDLC (System Development Life Cycle)?

A

Planning, creating, testing, & deploying information systems including software and hardware

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2
Q

What are the SDLC steps?

A 
Preliminary Investigation
Analysis
Logical Design
Physical Design
Implementation
Maintenance
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3
Q

Whats involved in the Preliminary Investigation SDLC stage?

A

Discovery of a problem or opportunity.

Assessment of feasibility (cost, benefits) and selects a development methodology - Step 1

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4
Q

Whats involved in the Analysis SDLC stage?

A

Determines user requirements & develops logical models of the system (demonstrations) - Step 2

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5
Q

Whats involved in the Logical Design SDLC stage?

A

Revised to ensure the new system will meet user requirements - Step 3

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6
Q

Whats involved in the Physical Design SDLC stage?

A

Logical models are converted to physical models. Includes network maps, servers, & devices needed. - Step 4

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7
Q

Whats involved in the Implementation SDLC stage?

A

Development of databases and software programs. Hardware installation. - Step 5

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8
Q

Whats involved in the Maintenance SDLC stage?

A

Modifications & Corrections - Step 6

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9
Q

What is Alpha testing?

A

End users assisted by developers; system tested with simulated data

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10
Q

What is Beta testing?

A

End users test the system w/o help from developers; using actual data

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11
Q

What is User Acceptance testing?

A

End users test the system in operational setting to see if it is useful

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12
Q

Alpha, beta, and user acceptance testing occurs during which SDLC step?

A

Implementation

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13
Q

What are 3 steps that occur during deployment?

A

System Conversion
Final Documentation
End-user training

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14
Q

System conversion can occur as …

A

Direct
Parallel
Pilot
Phased

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15
Q

Old system is “turned off” and the new system is “turned on” at a specific date & time.

A

Direct Conversion

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16
Q

A period in time which both systems operate concurrently.

A

Parallel Conversion

17
Q

Conversion starts with a group of end-users, then deployed on a larger scale.

A

Pilot Conversion

18
Q

Team deploys a subset of the system first rather than deploying the whole system at once.

A

Phased Conversion

19
Q

The ability of an organization to recover from a disaster is directly related to their …

A

BPC (business continuity plan)

20
Q

What creates a copy of everything on the system including the operating system, configuration files, data, and so on?

A

Image backups

21
Q

Examples of backup media

A

Magnetic tapes, DVDs, CDs, other hard drives, cloud storage

22
Q

An initial full backup is performed and then subsequent backups only capture the changes since the last backup

A

Incremental backups

23
Q

When a system writes data to multiple hard drives at the same time to prevent loss of data.

A

Data mirroring

24
Q

A physical location we’re an organization can move it’s operations in case of a natural disaster or terrorist attack

A

Hot site

25
Q

A physical location that is a shell without equipment in case of a natural disaster or terrorist attack

A

Cold site

26
Q

Multiple data centers in disparate regions

A

Site sharing

27
Q

What network does Bluetooth operate on?

A

short range ad hoc network called Piconet

28
Q

Which organization supplied a guide for Bluetooth security?

A

National Institute of Standards and Technologies (NIST)

29
Q

What is a drawback for using IPv4 addressing scheme?

A

The devices that are limited to using IPv4 are 4.3 billion

30
Q

What is the major benefit of using IPv6?

A

A greater number of devices can be connected

31
Q

Refers to data sets that are so enormous and multifaceted that they will require more sophisticated database management/processing tools than we currently use.

A

Big Data

32
Q

which services can businesses can access and use software through the Internet?

A

SaaS

33
Q

Which service is able to quickly and reliably develop and deliver applications?

A

PaaS

34
Q

Which service supplies resources (e.g., servers, data storage) an IT department needs are located outside of the organization and are accessible by anyone, anywhere?

A

IaaS

Intro to IT - WGU (1 decks)

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