TCP/IP (1) layer protocols provide services to the application(2) running on a computer. The application layer does not define the application itself, but rather it defines  (3) that applications need-like the ability to transfer a file in the case of HTTP. In short, the application layer provides an (4) between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP  (5) layer consists of two main protocol options-the Transmission Control Protocol (TCP) And the User Datagram Protocol (UDP).

空白（1）处应选择（）

A.application

B.transport

C.link

D.network

张某在进行某企业咨询服务活动中，针对客户的要求和企业实际，对咨询方案进行相应补充和修改，提出了具有新思想的针对性方案，经过实施获得客户认可，此行为主要体现了咨询人员的什么能力( )

A．承压能力

B．表达沟通能力

C．快速学习能力

D．创新能力