A network administrator in a branch office is configuring EIGRP authentication between the branch office router and the headquarters office router. Which security credential is needed for the authentication process?

A network administrator in a branch office is configuring EIGRP authentication between the branch office router and the headquarters office router. Which security credential is needed for the authentication process?

• a randomly generated key with the crypto key generate rsa command
• the username and password configured on the headquarters office router
• the hostname of the headquarters office router and a common password
• a common key configured with the key-string command inside a key chain

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