in order to use the ssh services, I looked for the internet address of my computer, and the ifconfig command gave the following output that I have difficulty 'to interpret :

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[angelo_dev@localhost ~]$ sudo ifconfig

enp4s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500

ether 60:02:92:2d:2a:1f txqueuelen 1000 (Ethernet)

RX packets 0 bytes 0 (0.0 B)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 0 bytes 0 (0.0 B)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536

inet 127.0.0.1 netmask 255.0.0.0

inet6 ::1 prefixlen 128 scopeid 0x10<host>

loop txqueuelen 0 (Local Loopback)

RX packets 279 bytes 28310 (27.6 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 279 bytes 28310 (27.6 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500

inet 10.0.0.4 netmask 255.255.255.0 broadcast 10.0.0.255

inet6 fe80::d253:49ff:fe32:3254 prefixlen 64 scopeid 0x20<link>

ether d0:53:49:32:32:54 txqueuelen 1000 (Ethernet)

RX packets 6575 bytes 4915408 (4.6 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 5595 bytes 972283 (949.4 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

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The output of ifconfig command shows two cards (enp4s0, wlp3s0) while on the computer, it is installed only one
.
What is 'the explanation of this fact?

Also I would like to be sure to exactly get the IP address of computer ..
so, please, I would ask what is the IP address to use for my purpose  (127.0.0.1 - 10.0.0.4 -10.0.0.255) ??