ISDN practice exam for Cisco CCNA certification

The Cisco CCNA certification requires that you are completely familiar with ISDN. CCNA certification practice exams are a great way to prepare for the Cisco CCNA certification and for jobs that will require you to install, maintain, and configure ISDN on Cisco routers. This free practice exam will help you to know the Cisco ISDN well enough that you can productively apply your Cisco ISDN knowledge to any network. The Cisco CCNA certification is an entry level certification which will equip you for the type of work that requires extensive use of ISDN.

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Answer all questions.
Your score will be calculated out of a total of 25 questions even if they are unanswered.
Unanswered questions will be marked wrong.
Your Name:   
Your Email Address:  Your test results will be emailed to you.
1) Which of the following is not a benefit of ISDN services.
  1. ISDN has a faster call setup than analog modems.
  2. ISDN is well suited to PVC connections
  3. ISDN can carry voice, data, and video simultaneously.
  4. ISDN has faster data rates than analog modems.
 
2) Which is the definition of the reference point between network termination one and the line terminating equipment in a carrier network?
  1. R.
  2. U.
  3. S.
  4. T.
 
3) Which is the definition of the reference point between non isdn equipment or the termination endpoint two and a terminal adapter?
  1. R.
  2. U.
  3. S.
  4. T.
 
4) Which of the following terminal types can plug directly into a 4 wire ISDN network?
 
  1. NT1.
  2. TE2.
  3. TE1.
  4. NT2.
 
5) Which of the following terminal types requires a terminal adapter to connect to an ISDN network?
  1. NT1.
  2. TE2.
  3. TE1.
  4. NT2.


 
6) Which of the following is rarely found at the customer premises?
  1. NT1.
  2. TE2.
  3. TE1.
  4. NT2.
 
7) Which of the following connects directly to the providers local loop?
  1. NT1.
  2. TE2.
  3. TE1.
  4. NT2.
 
8) Which ISDN reference point refers to the 4 wire segment of the ISDN network?
  1. R
  2. U
  3. S
  4. T
  5. S/T
 
9) ISDN protocols beginning with which letter designation refers to switching and signaling?
  1. E
  2. I
  3. Q
 
10) Which switch type generally does not require the use of SPIDS in a router configuration?
 
  1. Basic-5ess
  2. Basic-dms100
  3. Basic-ni1
  4. Primary-dms100
 
11) Which channel is the first to be setup between the ISDN switch and a remote  router
 
  1. D
  2. B
 
12) What is the optional second part of a SPID on an ISDN BRI interface configuration?
 
  1. SPID2
  2. LDN
 
13) Enter the command that installs the second SPID on a BRI interface configuration.
Do not capitalize or abbreviate.

Router (config-if) #  30112345670101
 

    
14) Which of the following is not a necessary task when setting up DDR?
  1. Configure the dialer.
  2. Define interesting traffic.
  3. Define a default route.
 
15) Complete the command so the route defines the basic rate interface used to reach the remote network.

Router (config-if) # ip route 172.16.5.0 255.255.255.0 
Do not capitalize or abbreviate.
 

    
16) Complete the command that creates an access list for the ISDN dialer

Router (config-if) #  1 protocol IP permit
Do not capitalize or abbreviate.
 

    
17) Apply the above access list to the basic rate interface.

Router (config-if) # 
 

    
18) How does the dialer map provide a measure of security for a DDR connection where a dialer string would not?
  1. The dialer string contains the number to dial.
  2. The dialer map provides the remote ip address so that routing will only occur if the destination IP is correct and the remote hostname for host based authentication
19) There are 5 steps in setting up a DDR connection. Which of the following is not one of those 5?
  1. Choose the interface.
  2. Create a default route.
  3. Configure encapsulation.
  4. Link interesting traffic to the interface.
  5. Configure the dialer.
 
20) Which command would cause the ISDN call to drop in the absense of interesting traffic after 5 minutes.
     
  1. dialer idle-timeout 5
  2. dialer idle-timeout 300
  3. dialer load-threshold 5 either
  4. dialer load-threshold 300 either
 
21) True or False? Extended access lists can be used on DDR connections to restrict interesting traffic from unwanted protocol types.
  1. True.
  2. False.
 
22) Enter the command used to apply an extended access list to dialer-list 1. Use 125 as the extended access list number.
Do not capitalize or abbreviate.

Router (config) # 
 

    
23) The output of which command will let you know if your router is communicating with your providers switch and is or isn't ready to place calls?
  1. Show isdn service.
  2. Show dialer.
  3. Show isdn active.
  4. Show isdn status.
 
24) Which command will show network layer and call setup/teardown dialog between your router and the providers switch?
  1. Debug isdn q921
  2. Debug isdn q931
  3. Debug dialer.
  4. Show ISDN active.
 
25) Which command will display call setup and teardown activity?
  1. Debug isdn q921
  2. Debug isdn q931
  3. Debug dialer.
  4. Show ISDN active.

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