Elasticsearch: Configuring nodes(Network Computers) for single cluster

Hello {Elastic} world,

Working with ELK since 3-4 months, able to successfully use the tools and customize
them as per the users need.

This time we want to experience sharding/replica's of the 'INDICES' are we're stuck
with the required configutation.

# Set the bind address to a specific IP (IPv4 or IPv6):
#
 network.host: 10.76.133.15
#
# Set a custom port for HTTP:
#
# http.port: 9200
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
# gateway.recover_after_nodes: 3
#
# For more information, see the documentation at:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-gateway.html>
#
# --------------------------------- Discovery ----------------------------------
#
# Elasticsearch nodes will find each other via unicast, by default.
#
# Pass an initial list of hosts to perform discovery when new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
# discovery.zen.ping.unicast.hosts: ["host1", "host2"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of nodes / 2 + 1):
#
# discovery.zen.minimum_master_nodes: 3

WHAT SHOULD BE THE VALUES OF FOLLOWING
network.host
default list of hosts is
discovery.zen.ping.unicast.hosts: ["host1", "host2"]

Do we need node names of the network computers to be same?