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Gleim BEC > Study Unit 13 > Flashcards

Study Unit 13 Flashcards

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1
Q

Distributed processing

A

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

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2
Q

LAN

A

need to increase productivity lead to LAN development

LAN-interconnection bet devices in a single office or bldg

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3
Q

Client server model

A

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

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4
Q

client server arrangement

A

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)

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5
Q

Client

A

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

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6
Q

Key to client-server model

A

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

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7
Q

Security risks of decentralization

A

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

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8
Q

Classifying Networks by Geographical extent and fx

-LAN

A

connects devices w/in single office/home or bldgs.

owned by a single org

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9
Q

WAN

A

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

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10
Q

Publicly owned WAN

A

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

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11
Q

Privately owned WAN

A

profit making

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

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12
Q

Types of private WANs

A
  • 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
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13
Q

Intranet vs extranet

A

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

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14
Q

TCP/IP

A

Transmission Control Protocal/ Internet Protocol

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

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15
Q

HTML

A

hypertext markup lang

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

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16
Q

HTTP

A

allows hyperlinking across internet not just single computer

browser allows users to read html from computer (web)

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17
Q

XML

Study These Flashcards
A

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
Q

URL

Study These Flashcards
A

uniform resource locator

website address

19
Q

4 primary cloud svcs

Study These Flashcards
A

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

20
Q

TCP/IP

Study These Flashcards
A

Transmission Control Protocal/ Internet Protocol

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

21
Q

HTML

Study These Flashcards
A

hypertext markup lang

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

22
Q

HTTP

Study These Flashcards
A

allows hyperlinking across internet not just single computer

browser allows users to read html from computer (web)

23
Q

XML

Study These Flashcards
A

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
Q

URL

Study These Flashcards
A

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)
31
EFT vs E Money
smart cards- computer chips not magnetized stripes; can store data & security programs, digital signature disadvantage-not covered by insurance (FDIC) but EFT is covered
32
EDI
electronic data interchange- leading method of doing B2B e-commerce communication of data inf format agreed to by parties 1st step in evol of e-business -begins w/ mapping work process and flows to achieve business objectives; enhance JIT
33
Advantages of EDI
reduce clerical errors faster transactions eliminate repetitive clerical tasks (doc prep, processing, mailing) digital record storage
34
Digital Certificates
data files created by trusted 3rd parties (certificate authorities) if want to do ecommerce estab relationshp w/ certificate auth; verified ID CA creates coded e-certificate contain holder's name, public key, serial #, exp date party wants to do business w/ cert holder finds cert on authority's serve uses authority's public key to decrypt sender gets key, encodes message and send, recipient decrypts w/ private key
35
COSTS of EDI
specialized software -to convert data must buy or develop dedicated hardware -must install servers or contract thru VAN legal costs -contracts must be renegotiated process reengineering -replacing existing procedures req changes to internal processes (cost of employee retraining) enhanced security and monitoring -risks of communicating across org boundaries
36
Terms and Components of EDI
stds- procedures to convert written doc into e docs messaging format conventions-procedures for arranging data element in specified formats for data dictionary-meaning of data elements, specification of each trans structure -transmission protocol- rules to determine how e envelope structured and processed by comm devices
37
Encryption Tech
encodes data before transmission and recipient decodes it on their end, key needed to decode when performed by physicall secure hdwr is more secure than from sfwr increases overhead
38
Public Key
asymmetric encryption comm parties create mathematical related pair of key; 1 key is public other is private sending party uses public key
39
Symmetric encryption
parties agree on single (private) key | longer the key (in bits) more resistant to decryption by unauth parties
40
Digital Certificates
data files created by trusted 3rd parties (certificate authorities) if want to do ecommerce estab relationshp w/ certificate auth; verified ID CA creates coded e-certificate contain holder's name, public key, serial #, exp date party wants to do business w/ cert holder finds cert on authority's serve uses authority's public key to decrypt

Gleim BEC (14 decks)

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