Chapter 6


1:

List three ways for using dial as a backup solution.

A1:

Using a backup interface, using a floating static route, and using a dialer watch.

2:

What is the main advantage of the dialer watch solution?

A2:

The router dials immediately when the primary route is lost. It does not depend on line protocol, encapsulation, or interesting traffic.

3:

What is the line configuration command to configure a modem to use the modemcap usr_sportster?

A3:

 Router(config-line)#  modem autoconfigure type usr_sportster  

4:

What is the global configuration command to define a group named dial as a TACACS+ group ?

A4:

 Router(config)#  aaa group server tacacs+ dial  

5:

What is the default protocol and port number of RADIUS authentication and accounting?

A5:

UDP 1645 and UDP 1646.

6:

What is the line configuration command to automatically select the PPP protocol during text authentication?

A6:

 Router(config-line)#  autoselect ppp  

7:

What is NFAS and what is its function?

A7:

Non-Facility Associated Signaling (NFAS) allows a single D channel to control multiple PRI circuits.

8:

What is the interface configuration command to ensure that voice calls are sent to a modem?

A8:

 Router(config-if)#  isdn incoming-voice modem  

9:

What is the purpose of the command no exec ?

A9:

It prevents a person from obtaining a login prompt when they connect to a line on which it is configured.

10:

What is the best way to test a backup solution?

A10:

Physically unplug the cable from the main interface.

11:

How would you connect to a network access server to connect as a text dial-out device?

A11:

Telnet or Secure Shell (if enabled).

12:

True or False: PC software is required to use a router to perform PPP dial-out.

A12:

False. PC software is only required to attach a network modem to a virtual communications port for dial-out.

13:

What is the most scaleable way to use large-scale dial-out?

A13:

Store the client information and phone numbers on an AAA server.

14:

What is the main purpose of a group-async interface?

A14:

It allows you to consolidate many async interfaces into a group for ease of configuration.

15:

What does the interface command group-range do?

A15:

It specifies which lines are part of the group-async interface.




Troubleshooting Remote Access Networks CCIE Professional Development
Troubleshooting Remote Access Networks (CCIE Professional Development)
ISBN: 1587050765
EAN: 2147483647
Year: 2002
Pages: 235

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