Lab - Remove and Re-Add a Node (new)

Hi,
I can see as per below, m103 is added for 127.0.1.1 but when i try to ping to m103 or m103.mongodb.university i am getting host not found error. But directly ping to the IP works fine.
Please clarify in this case will it still work if we try to add m103 as a node ?

vagrant@m103:/etc$ cat hosts
127.0.1.1 m103.mongodb.university m103
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
192.168.103.100 m103 m103
vagrant@m103:/etc$

You should be able to ping m103
Please modify /etc/hosts as below

vagrant@m103:/data/db$ ping m103
PING m103.mongodb.university (127.0.0.1) 56(84) bytes of data.
64 bytes from m103.mongodb.university (127.0.0.1): icmp_seq=1 ttl=64 time=0.018 ms
ersity (127.0.0.1): icmp_seq=3 ttl=64 time=0.078 ms
^[[1;5C^[[1;5C^[[1;5C^C
— m103.mongodb.university ping statistics —
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.018/0.058/0.078/0.028 ms

vagrant@m103:/data/db$ cat /etc/hosts
127.0.0.1 m103.mongodb.university m103