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Question 1

What is a multi-location system structure that is sometimes called the goldilocks solution because it seeks to balance design trade offs

Answer 1

Distributed.

Question 2

What kind of multi location system structure has the fewest problems with input and output bottlenecks?

Answer 2

decentralized

Question 3

Distributed processing environments are good in what situations?

Answer 3

when processing large amounts of data generated at many locations and fast access is required.

Question 4

What are advantages of decentralized/distributed systems

Answer 4

More responsive to the needs of end users
Data transmission costs are reduced
Input/output bottlenecks assoc. with high traffic periods are largely avoided.

Question 5

What is a disadvantage of decentralized systems

Answer 5

Data security is enhanced

Question 6

When are WAN networks best?

Answer 6

to connect many sites located across a broad geographical distance. WANs use public or shared lines

Question 7

what kind of lines do LANs use?

Answer 7

Dedicated lines

Question 8

What should network response time reports be used for?

Answer 8

to monitor and manage network traffic and resources

Question 9

What are two types of network operating systems

Answer 9

client/server

peer to peer

Question 10

What is the core data control protocol used to control transmissions on the internet?

Answer 10

Transmission control protocol/internet protocol (TCP/IP)

Question 11

What do gateways do?

Answer 11

connect internet computers of dissimilar networks

Question 12

What kind of tech is designed to exchange financial info over the WWW

Answer 12

Extensible business reporting language

Question 13

Free cash flow equation

Answer 13

Net operating income after taxes (NOPAT) + depreciation - change in working capital - capital expenditures

Question 14

What internal control component includes the principle that the org evaluates and communicates internal control deficiencies in a timely manner to those parties responsible for taking corrective action?

Answer 14

monitoring

Question 15

What is the “spread”

Answer 15

spread = ROI - cost of capital

Question 16

Checkpoint/restart control

Answer 16

reprocess only those transactions that took place after the last valid run. (only used in BATCH runs)

Question 17

What type of system includes redundancy of components?

Answer 17

fault tolerant - operate despite component failure

Question 18

Mirroring

Answer 18

high cost, high reliability approach to back up that is common in ecommerce. It ensures continuous delivery of services despite a natural disaster

Question 19

Rollback and recovery

Answer 19

periodic snapshots are taken of a master file and upon detection of a problem, the system reprocesses all transactions that have occurred since the snapshot. (common in ONLINE REAL TIME SYSTEMS)

Question 20

Storage area networks (SAN)

Answer 20

used to provide data backup in case of a disaster. Replicates data from multiple sits. Data immediately available. Efficient storage for servers

Question 21

High availability clusters (HACS)

Answer 21

computer clusters designed to improve service availability - in ecommerce

Question 22

What is an electronic device that separates or isolates a network segment from the main network while maintaining the connection between networks

Answer 22

Firewall - prevents unauthorized users from accessing a network segment

Question 23

What does data control language in a relational database that includes commands, most likely to control?

Answer 23

Which users have various privileges relating to a database

Question 24

what do network firewalls perform?

Answer 24

low level filtering capabilities

Question 25

Application firewalls

Answer 25

have the ability to do much more sophisticated checks and provide much better control.
Control the execution of programs and examine the handling of data by specific applications

Question 26

What are 3 types of asymmetric encryption protocols?

Answer 26

SSL
S-HTTP
SET

Question 27

SSL

Answer 27

Secure socket layer

Question 28

S-HTTP

Answer 28

Secure hypertext transport protocol

Question 29

SET

Answer 29

Secure electronic transactions (protocol)

Common for internet consumer purchases

Question 30

How does a private key work?

Answer 30

both the sender and receiver must have the private key before the encryption method will work. (disadvantage bc transmission of the key is inherently insecure)

Question 31

What is the primary purpose of a digital signature?

Answer 31

consists of a digest of the original message that is encrypted with the sender’s private key. The private key provides the sender’s authentication and transmission of the encrypted digest (permits the detection of any alterations during transmission.

Question 32

What is the most reliable form of electronic authentication?

Answer 32

digital certificate - an independent background check is completed to confirm the identity of the requesting entity (provides a higher level of reliability than a digital signature)

Question 33

What can be used to authenticate messages transmitted in a networked environment

Answer 33

digital signature - uses private/public key encryption tech to provide a means of authenticating messages delivered in a networked environment.