1. What command would be used to show the modem configured on a line? 
A. show line 
B. show version
C. show config 
D. show processes 
Answer: A

2. What command would be used to verify Auto Configuration operations? 
A. debug confmodem 
B. debug configmodem
C. debug conf-modem 
D. debug config-modem 
Answer: A

3. what is the command to display modem entries in the Modemcap database? 
A. show modemcap 
B. show modem database
C. show modemdba 
D. show modemcap dba 
Answer: A

4. What is the command used to specify the switch type the router will communicate with? 
A. isdn switch-type 
B. switch-type isdn
C. isdn switch type 
D. switch type isdn 
Answer: A

5. Which of the following is not part of the Modemcap database? 
A. Codex_3260 
B. Usr_sportster 
C. Viva 
D. 3_com 
Answer: D

6. Which of the following is the correct way to setup Modem Auto Discovery? 
A. 2511# configure terminal
2511 (config)# line 2 16
2511 (config-line)# 
modem autoconfigure discovery
B. 2511# configure terminal
2511 (config)# line 2 16
2511 (config-line)# 
modem autoconfigure discovery on
C. 2511# configure terminal
2511 (config)# line 2 16
2511 (config-line)# 
modem autoconfigure on
D. 2511# configure terminal
2511 (config)# line 2 16
2511 (config-line)# 
modem autoconfigure modem auto discovery on
Answer: A

7. Name three areas that modem auto-configuration can be separated into? 
A. Automatic Modem Configuration 
B. Modem Auto Discovery 
C. Modemcap 
D. Modem Database Management 
Answer: A, B & C


8. Which ISDN elements represents the local loop terminator? 
A. LE 
B. NT1 
C. NT2 
D. TE1 
E. TA
Answer: B 

9. What are the two transmission schemes adopted by the Internet community for sending IP traffic over point-to-point serial links? 
A. PPP 
B. SLIP 
C. HDLC 
D. SNA
Answer: A & B

10. Which remote access method allows a user to connect directly to the network and use network resources? 
A. Remote-Node 
B. Remote-Control 
C. Remote-Gateway 
D. Remote Virtual Connections
Answer: A

11. Which remote access method allows a user to take direct control of a workstation through a dialup line? 
A. Remote-Node 
B. Remote-Control 
C. Remote-Gateway 
D. Remote Virtual Connections
Answer: B

12. What are two types of remote access to network resources? 
A. Remote-Node 
B. Remote-Control 
C. Remote-Gateway 
D. Remote Virtual Connections 
Answer: A & B

13. Which ISDN elements represents the local exchange? 
A. LE 
B. NT1 
C. NT2 
D. TE1 
E. TA 
Answer: A

14. What command would be used to return a line to the idle state? 
A. clear line 
B. clear interface
C. clear controller 
D. debug line 
Answer: A


15. Which of these statements is true regarding serial connections through the Supervisor engine:
A. Port is synchronous 
B. Use straight through cable to DTE 
C. Use straight through cable to DCE 
D. DCE is DB25 
Answer: C & D 

The console port is configured as data communications equipment (DCE), and the auxiliary port is configured as data terminal equipment (DTE). The console and auxiliary ports both use RJ-45 connectors. RJ-45-to-DB-25 adapters are available for connection to modems and other external communications equipment. Both ports are configured as asynchronous serial ports.

16. Which of the following will reduce the amount of routing information sent across a serial link? 
A. Configure static entries in routing table 
B. Configure dial on demand routing 
C. Prioritize traffic 
D. Implement queuing on the router 
Answer: A 

17. Configuring static entries in routing table will reduce the amount of routing information sent across a serial link Which ISDN channel actually transfers the data? 
A. A
B. B
C. C
D. D
E. E
Answer: B 

ISDN Specifications:
ISDN BRI - 128 Kbps total bandwidth
2 - B channels - 64Kbps per channel - Data bearer channels
1 - D channel - 16 Kbps - Used for call setup, signaling and
call termination

ISDN PRI - 1.544 Mbps total bandwidth
23 - B channels - 64 Kbps per channel - Data bearer channels
1 - D channel - 16 Kbps per channel - Used for call setup,
signaling and call termination

European ISDN PRI - 2.048 Mbps total bandwidth
30 - B channels - 64 Kbps per channel - Data bearer channels
1 - D channel - 16 Kbps per channel - Used for call setup,
signaling and call termination


18. Which two statements are true regarding In-band management?
A. Can be used over a dialup modem
B. Requires a serial cable
C. The Out-of-band management features can be used to provide telnet access to a catalyst switch CLI 
D. In-band management can be used to establish snmp management sessions on an SNMP management platform 
Answer: C & D 

In-band management means management "through" the network, while Out-of-band management is using methods not through the network (eg: Console and an Asynchronous Modem Connection).

19. You are using AT&T 5ESS switch for PRI access. Which command would reflect this fact.
a. router# isdn switch-type primary-5ess
b. router(config)# isdn switch-type primary-5ess
c. router(config-if)# isdn switch-type primary-5ess
d. router(config-if)# isdn switch-type basic-5ess
e. router(config)# isdn switch-type att-5ess

20. What is the command to activate the line when the primary interface reaches 90%, and deactivate when the line reaches 20%: 
A. backup load 20 90
B. backup dial 20 90
C. backup load 90 20
D. backup dial 90 20 
Answer: C


21. What is a tunnel interface used for ?
a. to store dialer profiles
b. To forward traffic of a protocol to a network that does not support that protocol
c. to drop packets without wasting CPU cycles
d. to support VLANs
e. to multiple ISDN B channels
Ans:B

22. What signal indicates DTE ready for call?
A. DSR 
B. RTS 
C. CTS 
D. DTR
Answer: A

23. You have a ISDN BRI line to your ISP. What kind of queuing would be good for you ?
a. weighted-fair queue
b. priority queue
c. custom queue
d. none
Ans:D.

24. Which of the following is NOT an ISDN component? (choose 1)
a. NT1
b. NT2
c. BT
d. TA
e. TE1
f. TE2
g. LT
h. ET
Ans:C

25. You have the following setup:
REGULAR PHONE -------- TA ------ NT1 ------ ISDN SWITCH
What reference point is between "Regular Phone" and "TA" ?
What reference point is between "NT1" and "ISDN switch" ?
a. R,S
b. S,T
c. T,U
d. R,U
e. U,U
Ans:D

26. When should modem auto-configuration mode be used? 
A. To be able to configure a modem without sending modem configuration commands. 
B. To configure modem devices that are not currently supported by Cisco. 
C. To allow for the auto-discovery of modems. 
D. To allow modem configuration commands to be sent through a terminal emulator. 
Answer: A, B & D

27. What is the speed of V.32 bis without compression? 
A. 14.4 Kbps 
B. 28.8 Kbps 
C. 33.6 Kbps 
D. 1200 bps 
Answer: A

28. Which command listed displays l2f protocol errors that prevent l2f establishment?
A. debug vpdn
B. debug vpdn l2f-errors 
C. debug vpdn errors 
D. debug vpdn l2f all 
Answer: B


29. Which ISDN component combines Layer 2 and 3 functions and is typically found in PBXs ?
a. TE1
b. TE2
c. NT1
d. NT2
e. TA
Answer:D

30. Where is a dialer rotary group useful?
A. At an ISP NAS 
B. in environments that require multiple calling destinations
C. calling very busy destinations 
D. providing internet access 
Answer: B

31. Which command displays the proper syntax for displaying events that are part of a NORMAL tunnel establishment or shutdown in virtual private dialup networks (VPDN)?
A. debig vpdn all
B. debug vdpn events 
C. debug vpdn errors 
D. debug vpdn packets 
Answer: B

32. Which command will specify the maximum number of packets, which will be held while a DDR interface is being activated?
A. dialer hold number
B. dialer packet-queue number 
C. dialer hold-queue number
D. dialer packet-threshold number 
Answer: C

33. What permits tunneling of link layer frames with a VPDN?
A. LZF
B. LZE
C. L2E 
D. L2F
Answer: D

34. Command to define the SPID of the first B-channel on a BRI interface as 314935123401
a. router(config-if)# spid1 314935123401
b. router(config-if)# spid 314935123401
c. router(config-if)# isdn spid1 314935123401
d. router(config-if)# isdn id 314935123401
e. router(config-if)# isdn string 314935123401
Ans:C

35. ISDN switch-type command 
a. is a global configuration command
b. is a interface configuration command
c. can be used as either global or interface configuration command
d. can be used for primary ISDN lines only
Ans:A

36. How does overload relate to Cisco NAT services?
A. more hosts than addresses 
B. excessive CPU utilization 
C. no more static translations 
D. messages to fast for console 
Answer: A

37. What is the difference between the "dialer map" comamnd and the "dialer-group command"
a. dialer map command tells the interface what is interesting traffic to place a call & dialer-group command tells the interface what number to call
b. dialer map command tells the interface what number to call & dialer-group command tells the interface what is interesting traffic to place the call.
c. dialer map maps routers and phone numbers, whereas dialer-group applies dialer maps
d. dialer map maps ip to phone numbers, whereas dialer-group groups dialing interfaces in groups of networks
Ans:B

Note: dialer-group only defines indirectly. dialer-group points to a particular dialer-list and the list defines interesting traffic

38. Enter the command to view layer 2 traffic on the D channel between the ISDN switch and the router? 
A. debug isdn q921
B. debug isdn q931
C. debug q931 
D. debug q921 
Answer: A

39. Command to find info on the D channel:
a. sh controller bri0
b. sh isdn controller
c. sh isdn channels
d. sh isdn channel d
e. sh controller d
Ans:A

40. What is the command to initiate the vpdn at the isp nas?
A. vpdn enable 
B. vpdn outgoing 
C. enable vpdn incoming 
D. enable vpdn outgoing
Answer: A & C