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ISDS 406 Chapter 8 questions and answers verified 2024
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ISDS 406 Chapter 8 questions and answers verified 2024
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ISDS 406 Chapter 8architecture design - correct answer ✔the plan for how the information
system components
will be distributed across multiple computers and what hardware, operating
system software, and application software will be used on each computer
architectural components - correct answer ✔software and hardware
All software systems can be divided into four basic functions The basic
building blocks of an information system - correct answer ✔data storage.
(data entities in ERD)
data access knowledge (SQL)
application logic: the logic documented in the DFDs, use cases,
and functional requirements.
presentation logic: the
display of information to the user and the acceptance of the user's commands
(the user interface)
client-server architectures, - correct answer ✔which attempt to balance the
processing between client devices and one or more
server devices diagram on page 283 If the client shown in Figure 8-1
contained
all or most of the application logic, it is called a thick or fat client
thin clients - correct answer ✔containing just a small portion of the
application logic, are popular
because of lower overhead and easier maintenance. Webbased
, systems are designed with the Web browser performing presentation and
only minimal application logic using such programming languages as
JavaScript, while the server side has most of the application logic, all of the
data
access logic, and all of the data storage.
Client-server architectures have four important benefits - correct answer
✔scalable. That means it is easy to increase or decrease the storage
and processing capabilities of the servers
can support many different types of
clients and servers (combinging widnows and macs)
simple to clearly separate the presentation logic, the application logic, and the
data access logic and design each to be somewhat independent
if a server fails in a client-server architecture, only the applications
requiring that server will fail.
MIddleware - correct answer ✔a type of system software
designed to translate between different vendors' software
middleware
three-tiered architecture - correct answer ✔the software on the client
computer is responsible for presentation
logic, an application server(s) is responsible for the application logic, and
a separate database server(s) is responsible for the data access logic and
data storage.
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