What is the effect of issuing the hostname RouterA command on a router?

What is the effect of issuing the hostname RouterA command on a router?

• A description will be configured on the router interfaces identifying them as belonging to RouterA.
• The router will attempt to establish a connection to the host with the name RouterA.
• The router will map an IP address to the domain name RouterA.
• The router prompt will change from Router(config)# to RouterA(config)#

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