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Flashcards in Study Unit 13 Deck (40)
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1

Distributed processing

decentralized processing tasks and data storage and assigning functions to multiple computers, in separate locations
-allows reductions in amnt of comm traffic b/c data needed locally could reside locally

2

LAN

need to increase productivity lead to LAN development
LAN-interconnection bet devices in a single office or bldg

3

Client server model

most cost effective and easy to admn arrangement for LANs
-differ from peer to peer ntwk in that devices play more specialized roles; client processes request svc from server processes

4

client server arrangement

server centrally located and devoted to fx needed by all ntwk users
-ex (mail servers, app servers)
determination as server by function it performs (simple personal computer can be a server)

5

Client

any object that uses resources of another object; client can be either device or sftwr program
client-device that requests svcs from a server
client device-displays user interface and enable data entry, queries, and receipts of reports

6

Key to client-server model

runs processes on platform most appropriate to process while attempting to minimize traffic over the ntwk (3 tiered architecture of client, app, db)

client svr systems made from eqt from multi vendors

security for client-svr systems more difficult than in highly centralized system b/c of access pts

7

Security risks of decentralization

unauthorized sftwr easily installed on ntwk; exposure to virus and liability to copyright violation
important files stored on local comp not backed up properly
app written by users of local comp not adhere to stds of org, making data sharing difficult

8

Classifying Networks by Geographical extent and fx
-LAN

connects devices w/in single office/home or bldgs.
owned by a single org

9

WAN

wide area ntwk- consists of conglomerate of LANs over widely separated locations; key is either public or privately owned

advantage-spread cost of ownership among multiple org

simplest config is 1 PC using dial up to connect to ISP

10

Publicly owned WAN

available to any user w/ a compatible device (phone, internet)
assets paid for by means other than indiv imposed user fees
quality can't be guaranteed, security is highly questionable

11

Privately owned WAN

profit making
offer faster, secure data comm svc to orgs that don't make investment in the infrastructure

12

Types of private WANs

-VANs- private ntwk provide customers w/ reliable, high speed secure transmission of data
--add value, give cust error detection/correction, e-mail for EDI

VPN - virtual private ntwk
-cheap way to solve problem of high cost of leased lines
--company connects each office to local ISP, routes data thru public internet
--VPN success depends on encryption in transit

13

Intranet vs extranet

both types of WANs (wide area ntwk)
intranet- share info thru org by internet and web sftwr to internal ntwk

extranet- linked intranets of 2 or more orgs (supplier and customers)
-uses public net to transmit, req pword for access

14

TCP/IP

Transmission Control Protocal/ Internet Protocol
suite of comm protocols (rules/stds) used to connect computers to internet; built into ntwk op systems

15

HTML

hypertext markup lang
allows users to click on a word/phrase (hyperlink) on screens and have another doc automatically be displayed

16

HTTP

allows hyperlinking across internet not just single computer
browser allows users to read html from computer (web)

17

XML

extensible markup lang
developed as open std usable w/ many programs and platforms
-codes all info so user can determine how to present and what it is
-uses codes

18

URL

uniform resource locator
website address

19

4 primary cloud svcs

Data-as-a-Svc (DaaS)
Infrastructure-as-a-svc (IaaS)
Platform-as-a-svc (Paas)
Software-as-a-svc (SaaS)

20

TCP/IP

Transmission Control Protocal/ Internet Protocol
suite of comm protocols (rules/stds) used to connect computers to internet; built into ntwk op systems

21

HTML

hypertext markup lang
allows users to click on a word/phrase (hyperlink) on screens and have another doc automatically be displayed

22

HTTP

allows hyperlinking across internet not just single computer
browser allows users to read html from computer (web)

23

XML

extensible markup lang
developed as open std usable w/ many programs and platforms
-codes all info so user can determine how to present and what it is
-uses codes

24

URL

uniform resource locator
website address

25

4 primary cloud svcs

Data-as-a-Svc (DaaS)
Infrastructure-as-a-svc (IaaS)
Platform-as-a-svc (Paas)
Software-as-a-svc (SaaS)

26

E business vs E commerce

E business- all methods of conducting business electronically
E comm- conduct of financial trans w/ outside parties electronically
-2 varieties (B2B and B2C)

27

B2B

business to business
speed up order and fulfillment process
further automated thru EDI, buyer's purch auto places order w/ vendor when inventories reach predetermined level
benefits
-low purch costs (buy online save time, simplifies ordering process)
-increased mkt efficiency (access to price quotes from suppliers; buyers get better price)
-better mkt intelligence (better insights into demand levels in mkt)
-decreased inventory level (JIT mfg)

28

B2C

mostly online
many of same benefits of B2B wrt reduced costs and better efficiency
-same security issues (authorization)

29

Big Data

collection and analysis of large/complex data sets
challenges
-capturing, storing, analyzing, securing large amnts of data

30

EFT

electronic funds transfer
ecommerce app provided by fin institutions worldwide enables transfer of funds via access device (terminal-POS/ATM)
typical app is direct deposit
costs are lower than manual b/c docs and ppl eliminated; reduced clerical errors
most important- check collection (reduce paper checks)
2 major systems to wire
-Fedwire (Fed Reserve wire transfer ntwk)
-CHIPS (clearing house interbank pmt system)