多选题Which two are characteristics of the Intercepting Filter pattern？（）Ait provides centralized request handling for incoming requests.BIt forces resource authentication to be distributed across web components.CIt reduces coupling between presentation-tier

it provides centralized request handling for incoming requests.

It forces resource authentication to be distributed across web components.

It reduces coupling between presentation-tier clients and underlying business services.

It can be added and removed unobtrusively， without requiring changes to existing  code.

It allows preprocessing and postprocessing on the incoming requests and outgoing  responses.

it supports very large data-sets such as the result-sets from large search queries to be held in memory

it provides a set of management tools that enables automation of configuration

it provides enhanced visibility across the entire application infrastructure

it significantly increases the performance of Web-based applications with no code change

It helps verify end-to-end path availability.

It provides traffic rerouting in case of disaster.

HSRP, GLBP, and VRRP can be clients of GSS.

BGP must be the routing protocol between the distributed data centers.

DNS responsiveness is improved by providing centralized domain management.

it provides enhanced visibility across the entire application infrastructure

it provides a set of management tools that enable automation of configuraion

it significantly increases the performance of Web-based applications with no code change

it dramatically reduces costs associated with diagnostics， configuration， and deployment on production servers

It encapsulates component lookup procedures.

It increases source code duplication and decreases reuse.

It improves client performance by caching context and factory objects.

It degrades network performance due to increased access to distributed lookup services.

Remote Proxy

Front Controller

Service Activator

Intercepting Filter

Business Delegate

 Front Controller and Transfer Object

 Front Controller and Service Locator

 Business Delegate and Transfer Object

 Business delegate and Intercepting Filter

 Model-View-Controller and Intercepting Filter

the URL pattern that requires authorization

the HTTP methods that require authorization

the users allowed access to the web resource

the J2EE roles allowed access to the web resource

the authentication mechanism required by the web resource

It encapsulates component lookup procedures

It increases source code duplication and decreases reuse

It improves client performance by caching context and factory objects

It degrades network performance due to increased access to distributed lookup services

 Transfer Object

 Service Locator

 Front Controller

 Intercepting Filter

 Business Delegate

 Model-View-Controller

It reduces network traffic by collapsing multiple remote requests into one.

It increases the complexity of the remote interface by removing coarse-grained methods.

It increases the complexity of the design due to remote synchronization and version control issues.

It increases network performance introducing multiple fine-grained remote requests which return verysmall amounts of data.

 It decreases complexity by removing a layer of proxy classes.

 It reduces coupling between tiers by hiding implementation details.

 It decreases performance due to the lack of caching of remote data.

 It forces business-tier expectations to be dealt with in the presentation-tier.

It simplifies remote interfaces to distributed objects.

It promotes cleaner application partitioning and encourages reuse.

It provides an initial point of contact for handling all related requests.

It reduces maintainability due to the increased complexity of the design.

It provides loosely coupled handlers that can be combined in various permutations.

The Websense redirect Web filter solution does not require a license on the SRX device.

The Websense server provides the SRX device with a category for the URL and the SRX device then matches the category decides to permit or deny the URL.

The Websense server provides the SRX device with a decision as to whether the SRX device permits or denies the URL.

When the Websense server does not know the category of the URL, it sends a request back to the SRX device SurfControl server in the cloud.