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Networking Interview Questions and Answers


What are Service-specific middleware?
It is needed to accomplish a particular Client/Server type of services which includes:-
Database specific middleware
OLTP specific middleware
Groupware specific middleware
Object specific middleware
Internet specific middleware and
System management specific middleware.

What is meant by Asymmetric Multiprocessing (AMP)?
It imposes hierarchy and a division of labor among processors. Only one designated processor, the master, controls (in a tightly coupled arrangement) slave processors dedicated to specific functions.

What is OLTP?
In the transaction server, the client component usually includes GUI and the server components usually consists of SQL transactions against a database. These applications are called OLTP (Online Transaction Processing) OLTP Applications typically,
Receive a fixed set of inputs from remote clients. Perform multiple pre-compiled SQL comments against a local database. Commit the work and Return a fixed set of results.

What is meant by 3-Tier architecture?
In 3-tier Client/Server systems, the application logic (or process) lives in the middle tier and it is separated from the data and the user interface. In theory, the 3-tier Client/Server systems are more scalable, robust and flexible.
Example: TP monitor, Web.

What is meant by 2-Tier architecture?
In 2-tier Client/Server systems, the application logic is either buried inside the user interface on the client or within the database on the server.
Example: File servers and Database servers with stored procedures.

What is Load balancing?
If the number of incoming clients requests exceeds the number of processes in a server class, the TP Monitor may dynamically start new ones and this is called Load balancing.

What are called Fat clients and Fat servers?
If the bulk of the application runs on the Client side, then it is Fat clients. It is used for decision support and personal software.
If the bulk of the application runs on the Server side, then it is Fat servers. It tries to minimize network interchanges by creating more abstract levels of services.

What is meant by Horizontal scaling and Vertical scaling?
Horizontal scaling means adding or removing client workstations with only a slight performance impact. Vertical scaling means migrating to a larger and faster server machine or multi-servers.

What is Groupware server?
Groupware addresses the management of semi-structured information such as text, image, mail, bulletin boards and the flow of work. These Client/Server systems have people in direct contact with other people.

What are the two broad classes of middleware?
General middleware
Service-specific middleware.

What are the types of Servers?
File servers
Database servers Transaction servers Groupware servers Object servers Web servers.

What is a File server?
File servers are useful for sharing files across a network. With a file server, the client passes requests for file records over network to file server.

What are the five major technologies that can be used to create Client/Server applications?
Database Servers
TP Monitors
Groupware
Distributed Objects
Intranets.

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