Systems Architecture Study Set 1

Computing

Quiz 13 :

Internet and Distributed Application Services

Quiz 13 :

Internet and Distributed Application Services

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Three-layer architecture divides an application into_______________ , _______________ , and_______________ layers.
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Three Layer Architecture
Three-layer architecture divides an application into data layer , business logic layer and presentation layers.
Explanation:
Data Layer: It manages the stored data in the database.
Business Logic Layer: It manages the rules and regulations of business processing.
Presentation Layer: It accepts the user input and displays the desired output to the user.

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________________to a remote resource must be initialized by the user or a system administrator.
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Static Connection
A(n) static connection to a remote resource must be initialized by the user or a system
administrator.
Explanation:
A connection to remote resources can be either static or dynamic and a user or a system administrator must know the resource name and server to create a static connection. A static connection can be created for printers or other shared resources.

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What are the differences between static and dynamic connections to remote resources? Which connection type requires a resource registry? Where should the resource registry be located?
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Static and dynamic connections
Differences between static and dynamic connections to remote resources are given as follows:
img Static connection type requires resource strategy because whenever resources are added, moved, named, updated, or deleted then just to reflect the changes all user's resources must be updated.
A resource registry must be located at an Operating System. A static connection must be established between local drive of computer system and the Shared Files folder on any server.

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________________is a process that sends a request. A(n) ________________is a process that responds to requests.
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With the_______________ protocol, a process on one machine can call a process on another machine as a subroutine with parameters passed in either or both directions.
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Do the terms Internet and Web describe the same thing?
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_______________ is the original Internet e-mail standard. More recent e-mail standards include and.
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System software that connects parts of a distributed application or enables users to locate and interact with remote resources is called _______________.
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A server process creates A(n) ________________that allows clients to send data or messages via a shared filename.
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Describe three low-level P2P interprocess communication standards. What are the advantages and disadvantages of using these standards to implement distributed multilayer applications?
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What is a protocol stack? What are the components of a typical protocol in a client computer that can access many Web servers?
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Describe client/server, three-layer, and n-layer architecture. What are the differences between a client and a server? What is the function of each layer in a three-layer application? Why might more than three layers be used?
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Although Google is the clear market leader in cloud computing services, it does have competitors. Identify one or two competitors in each cloud market segment SaaS, PaaS, and IaaS and compare their services with Google s. In which market segment is Google most dominant? In which is it least dominant?
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What is middleware?
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What are the components of a URL?
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An OS acts as both client and server. How are software components organized to perform both functions at the same time?
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_______________architecture divides an application into multiple processes, some of which send requests, some of which respond to requests, and others that do both.
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The Kerberos security model is a part of both the DCE and CORBA standard families. Investigate the capabilities and limitations of Kerberos. What degree of security does it provide? What infrastructure components are needed to use it? Does it address all security issues in distributed applications and resources?
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The CORBA ( www.corba.org ), Java EE ( http://java.sun.com ), and SOAP (www.w3.org) standards are evolving rapidly. Visit these Web sites, and determine what features have been added by recent standard revisions. What needs are these new features intended to satisfy? Are they being implemented widely? Why or why not?
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Distributed.net ( www.distributed.net ) is an organization that coordinates research on distributed computing applications. People and organizations can join Distributed.net and contribute idle computing power to ongoing research projects that require or use massively parallel approaches to solving complex computational problems. Investigate some current projects and the methods and protocols that coordinate software on members computers.
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