Exam 16: Distributed Processing, Clientserver, and Clusters

The ________ processing architecture is the most common client/server approach in current use.

Each server in the client/server environment provides a set of shared services to the clients.

A reliable message-passing facility is one that guarantees delivery if possible.

A __________ is a database in which information access is limited to the selection of rows that satisfy all search criteria.

The _________ machines are generally single-user PCs or workstations that provide a highly user-friendly interface to the end user.

The communications software is what enables client and server to interoperate.

"Servers are cabled to the same disks, but each server owns its disks. If one server fails, its disks are taken over by the other server," is a description of the _________ clustering method.

The function of switching an application and data resources over from a failed system to an alternative system in the cluster is referred to as __________ .

Host-based processing is true client/server computing.

The key feature of a client/server architecture is the allocation of application-level tasks between clients and servers.

The basic purpose of _________ is to enable an application or user at a client to access a variety of services on servers without being concerned about differences among servers.

Blocking primitives provide for efficient, flexible use of the message-passing facility by processes.

The dual caching approach is used to reduce communications traffic (client cache) and disk I/O (server cache.

A __________ is a specific kind of service provider that acts as a registry and allows for the lookup of service provider interfaces and service locations.

_________ is a language developed by IBM and standardized by ANSI for addressing, creating, updating, or querying relational databases.

In a _________ architecture, the application software is distributed among three types of machines: a user machine, a middle-tier server, and a backend server.

A cluster is easier than an SMP to manage and configure.

With the _________ clustering method, data are continuously copied from primary to secondary server.

The problem of keeping local cache copies up to date to changes in remote data is known as the _________ problem.

In a _________ configuration, the application processing is performed in an optimized fashion, taking advantage of the strengths of both client and server machines and of the distribution of data.