Question 1

Each PC and workstation on a WAN is typically within a few hundred feet of another,with a total network cable length of less than one mile.

Accepted Answer

A WAN (wide area network) typically covers a large geographical area, such as multiple cities or countries, and can span hundreds or thousands of miles. Therefore, the statement that each PC and workstation on a WAN is typically within a few hundred feet of another and with a total network cable length of less than one mile is false.

Question 2

Excessive data movement is a limitation when using file servers on WANs.

Accepted Answer

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Question 3

Which cloud computing characteristic specifies that the cloud services are accessible from almost anywhere and from almost any Web-enabled device?
A)Rapid Elasticity
B)Broad Network Access
C)Resource Pooling
D)On-Demand Self-Service

Accepted Answer

Broad Network Access is the characteristic of cloud computing that ensures all cloud services are accessible from almost anywhere and from almost any Web-enabled device. This allows users to access their data and applications from various devices without being tied to a specific location or device.

Question 4

A thin client is a client device designed so that most processing and data storage occur on the ________.
A)Middleware
B)Database engine
C)Client
D)Server

Accepted Answer

A thin client is designed to rely on a server for processing and data storage. Therefore, the best choice is D, server.

Question 5

Decentralized data control is a benefit when using file servers on LANs.

Accepted Answer

Decentralized data control can lead to inconsistencies, difficulties in data management, and security vulnerabilities, whereas centralized control on file servers enhances data integrity, security, and management.

Question 6

What are the benefits of creating three-tiered client/server architecture?

Accepted Answer

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Question 7

Compare and contrast a file server vs the client/server architectures.

Accepted Answer

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Question 8

Application program interface is the (front-end)portion of the client/server database system that provides the user interface and data manipulation functions.

Accepted Answer

Application Program Interface (API) is not specifically the front-end portion of a client/server database system. It is a set of protocols, tools, and definitions for building application software, which can be used in both the front-end and back-end to facilitate communication between different software components.

Question 9

What are the advantages of a client/server architecture?

Accepted Answer

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Question 10

In advanced architectures,data analysis can reside on a powerful application server,resulting in substantially faster response times for users.

Accepted Answer

In advanced architectures, data analysis can be offloaded to a powerful application server, which can result in faster response times for users.

Question 11

In the typical client/server architecture,all database recovery,security,and concurrent access management are centralized at the server; this is the responsibility of each user workstation in a simple LAN.

Accepted Answer

In the typical client/server architecture, the server is responsible for centralized database recovery, security, and concurrent access management, while each user workstation in a simple LAN may have limited responsibilities in these areas.

Question 12

Define a client/server architecture.

Accepted Answer

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Question 13

An improvement in LAN-based systems is the client/server architecture in which application processing is divided (not necessarily evenly)between client and server.

Accepted Answer

In client/server architecture, application processing is divided between client and server, thus improving the performance of the LAN-based system.

Question 14

Each client workstation must devote memory to a full version of the DBMS,there is less room on the client PC to rapidly manipulate data in high-speed random access memory (RAM).

Accepted Answer

Since a full version of the DBMS requires memory on the client workstation, there may be less room for high-speed RAM to manipulate data quickly.

Question 15

Define middleware.Provide an example to illustrate the usefulness of middleware.

Accepted Answer

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Question 16

When designing distributed and Internet systems,the deliverable is a document that will consolidate the information that must be considered when implementing a system design.

Accepted Answer

When designing distributed and Internet systems, the deliverable is typically a document that outlines the system design and includes considerations such as system architecture, hardware and software requirements, network topology, security, scalability, and more. This document serves as a blueprint for implementation and ensures that all stakeholders are aligned on the vision for the system.

Question 17

Which cloud computing characteristic allows for most flexibility,meaning users can access cloud resources in a buffet-style fashion on an as-needed basis without the need for lengthy negotiations with the service provider?
A)Rapid Elasticity
B)Broad Network Access
C)On-Demand Self-Service
D)Resource Pooling

Accepted Answer

On-Demand Self-Service allows for users to access cloud resources whenever they need them, without needing to involve the service provider in negotiations or requests. This provides the most flexibility for users to access cloud resources in a buffet-style fashion on an as-needed basis.

Question 18

Which cloud computing characteristic provides computing resources that can be scaled up or down almost instantaneously and often automatically,based on user needs?
A)Rapid Elasticity
B)Broad Network Access
C)On-Demand Self-Service
D)Measured Service

Accepted Answer

Rapid Elasticity allows for the quick and automatic scaling up or down of computing resources based on user needs.

Question 19

Define file server.What are the limitations of a file server?

Accepted Answer

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Question 20

What are the characteristics of a cloud computing model?

Accepted Answer

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Quiz 12: Designing Distributed and Internet Systems