B One of the destination patterns in the ingress gateway pointing to the number a customer dials considering the SIP comprehensive call flow is pointing to CVP IP address, as this allows CVP to receive and process incoming calls from the ingress gateway. C Another destination pattern in the ingress gateway pointing to the number a customer dials considering the SIP comprehensive call flow is pointing to IOS q/ws loopback address, as this allows CVP to send calls back to the ingress gateway for queuing and self-service. Reference = [Cisco Unified Contact Center Enterprise Solution Reference Network Design (SRND), Release 12.5(1)], page 11

A distinction between Packaged CCE and Unified CCE, specifically regarding call transfers, is that transfers that require Service Provider interaction via the NIC are supported by a PCCE Deployment in a 2K deployment model only. This means that PCCE can only support pre-routing call flows with NIC in a limited scale, while UCCE can support pre-routing call flows with NIC in any deployment model. Reference = [Cisco Unified Contact Center Enterprise Solution Reference Network Design (SRND), Release 12.5(1)], page 101

B One of the files used to deploy Finesse custom gadgets is CSS, as it defines the style and layout of the gadget. D Another file used to deploy Finesse custom gadgets is JavaScript, as it defines the functionality and logic of the gadget. Reference = [Cisco Finesse Developer Guide Release 12.5(1)], page 9 According to the web search results, Finesse gadgets are OpenSocial gadgets that consist of the following components12:
XML to define metadata
HTML for markup
JavaScript for interactivity
CSS for presentation and style
Therefore, to deploy Finesse custom gadgets, the files that are used are CSS and JavaScript, which are responsible for the appearance and functionality of the gadgets. The other options are not correct, because they are not components of OpenSocial gadgets. Python, JSON, and C++ are different programming languages that are not used to create Finesse custom gadgets.