The example design uses Serial Wire Debug (SWD). There is no dedicated Arm debug connector on the Arty Artix 7 (A7) board, therefore, SWD is only connected to the expansion connector. When the V2C-DAPLink adaptor board is fitted, the SWD ports are connected directly to this board and are accessible through the USB connector as part of the V2C-DAPLink interface.
To use JTAG debug, you must use a suitable debug probe, and route the JTAG connections to the expansion headers.
The example design does not connect to the trace interface. To use trace, you must route the TRACEPORT connections to the expansion headers and use a suitable trace capture device.