21. Routers are often used to implement FIREWALLS
A. True
B. False
22. You are adding a new server to your network. The network uses TCP/IP. The new server will provide users with dial-up access to network resources. The data link communications protocol you choose for dial-up access must allow you to provide secure authentication. Which protocol should you choose?
A. PPP
B. DLC
23. Maria needs to install software on a Windows NT Server computer which is a backup domain controller. When she attempts to log on to the server, she receives the message “Unable to log on locally”. What must you do to enable Maria to log on to the server?
A. In User Manager for Domains, define Maria as a local account
B. In User Manager for Domains, assign Maria to a group that has the right to log on locally
C. In the System option in Control Panel, select the setting that allows users to log on locally
D. In the System option in Control Panel, set the user environment variables to allow Maria to log on locally
E. None of the above
24. Why does a high number of broadcast messages adversely affect overall network performance?
A. Each broadcast message requires an acknowledgment packet from every computer on the network
B. No computer on the network can transmit data until each broadcast message has been acknowledged by every computer on the network
C. Broadcast messages are automatically routed to every segment of a LAN
D. Every computer on the network must process each broadcast message
E. None of the above
25. You want to find out which users are currently using a specific directory on a Windows NT Server computer. How should you do this?
A. Use Windows NT Explorer
B. Use Disk Administrator
C. Use Server Manager
D. Use User Manager for Domains