You have forgotten the root user password on a Cisco TelePresence VCS, and you do not have access to any
other administrator account.
Which of the following steps must you perform to change the root password? (Choose four.)

A.
Connect to the VCS by using a serial connection.

B.
Connect to the VCS by using an SSH connection.

C.
Restart the VCS.

D.
Log in with the user name admin and the password TANDBERG.

E.
Log in with the user name pwrec and a blank password.

F.
Log in with the user name root and the password TANDBERG.

G.
Issue the passwd command.

H.
Change the password when prompted.

Explanation:
You must perform the following steps to change a forgotten root password:
1. Connect to the Cisco TelePresence Video Communication Server (VCS) by using a serial connection.
2. Restart the VCS.3. Log in with the user name pwrec and a blank password.
4. Select whether you want to change the root or admin account.
5. Change the password when prompted.
The pwrec account is used to reset the password on the root and admin accounts. This account does not have
a password and is active for only one minute after the VCS starts.
You cannot change a forgotten root password by using a Secure Shell (SSH) connection. However, you can
change a root password by using an SSH connection if you know the current root password. To change the root
password, perform the following steps:
1. Connect to the Cisco VCS by using a serial connection or an SSH connection.
2. Log in as root by using the existing password.
3. Issue the passwd command.
4. Change the password when prompted.
If you do not have access to an administrator account on the VCS, you cannot log in with the user name admin
and the password TANDBERG to change a forgotten root password. The default admin account has
administrator access and can be used to reset any account password on the VCS.
You cannot log in with the user name root and the password TANDBERG to change a forgotten root password.
The password TANDBERG is the default root password. If a VCS currently uses the default root password, an
alarm will be displayed on the graphical user interface (GUI) and on the command-line interface (CLI).
You cannot issue the passwd command to change a forgotten root password. You must be logged in as root in
order to use the passwd command to change the root password.

Cisco: Cisco TelePresence Video Communication Server, Administrator Guide, Software version: X8.1: Using
the root account (PDF)