CCNA – WAN
Here you will find answers to WAN Questions
If you are not sure about Frame Relay, please read my Frame Relay tutorial.
Question 1
The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router. Which of the following statements is true concerning this command?
A: This command should be executed from the global configuration mode.
B: The IP address 10.121.16.8 is the local router port used to forward data.
C: 102 is the remote DLCI that will receive the information.
D: This command is required for all Frame Relay configurations.
E: The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC.
Correct Answers: E
Explanation:
The command frame-relay map ip 10.121.16.8 102 broadcast means to mapping the distal IP 10.121.16.8 102 to the local DLCI 102. When the “broadcast” keyword is included, it turns Frame Relay network as a broadcast network, which can forward broadcasts
Question 2
Refer to the exhibit. Which statement describes DLCI 17?
A: DLCI 17 describes the ISDN circuit between R2 and R3.
B: DLCI 17 describes a PVC on R2. It cannot be used on R3 or R1.
C: DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.
D: DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.
Correct Answers: C
Explanation:
DLCI stands for Data Link Connection Identifier. DLCI values are used on Frame Relay interfaces to distinguish between different virtual circuits. DLCIs have local significance because the identifier references the point between the local router and the local Frame Relay switch to which the DLCI is connected.
Question 3
A default Frame Relay WAN is classified as what type of physical network?
A: point-to-point
B: broadcast multi-access
C: nonbroadcast multi-access
D: nonbroadcast multipoint
E: broadcast point-to-multipoint
Correct Answer: C
Explanation:
Non-Broadcast Multi-Access (NBMA) networks are types such as Frame Relay, X.25, and Asynchronous Transfer Mode (ATM). These networks allow for multi-access, but have no broadcast ability like Ethernet
Question 4
Which of the following are key characteristics of PPP? (Choose three.)
A: can be used over analog circuits
B: maps Layer 2 to Layer 3 address
C: encapsulates several routed protocols
D: supports IP only
E: provides error correction
Correct Answers: A C E
Explanation
Below is some more information about PPP:
PPP (Point-to-Point Protocol) allows authentication such as Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP) and multilink connections (allow several separate physical paths to appear to be one logical path at layer 3) and can be run over asynchronous and synchronous links.
PPP can work with numerous network layer protocols, including Internet Protocol (IP), Novell’s Internetwork Packet Exchange (IPX), NBF and AppleTalk.
PPP only supports error detection, not error correction so answer E should be understood as “provides error detection”. It is a mistake of this question.
Question 5
Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN? (Choose three)
A: HDLC
B: Ethernet
C: Token Ring
D: PPP
E: FDDI
F: Frame Relay
Correct Answer: A D F
Question 6
Refer to the exhibit. What is the meaning of the term dynamic as displayed in the output of the show frame-relay map command shown?
A: The Serial0/0 interface is passing traffic.
B: The DLCI 100 was dynamically allocated by the router
C: The Serial0/0 interface acquired the IP address of 172.16.3.1 from a DHCP server
D: The DLCI 100 will be dynamically changed as required to adapt to changes in the Frame Relay cloud
E: The mapping between DLCI 100 and the end station IP address 172.16.3.1 was learned through Inverse ARP
Correct Answer: E
Explanation
The term dynamic indicates that the DLCI number and the remote router IP address 172.16.3.1 are learned via the Inverse ARP process.
Inverse ARP is a technique by which dynamic mappings are constructed in a network, allowing a device such as a router to locate the logical network address and associate it with a permanent virtual circuit (PVC).
Question 7
Which of the following describes the roles of devices in a WAN? (Choose three.)
A: A CSU/DSU terminates a digital local loop
B: A modem terminates a digital local loop
C: A CSU/DSU terminates an analog local loop
D: A modem terminates an analog local loop
E: A router is commonly considered a DTE device
F: A router is commonly considered a DCE device
Correct Answers: A D E
Explanation
The idea behind a WAN is to be able to connect two DTE networks together through a DCE network. The network’s DCE device (includes CSU/DSU) provides clocking to the DTE-connected interface (the router’s serial interface).
A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device. A CSU/DSU is used between two digital lines -> A & D are correct but B & C are not correct.
For more explanation of answer D, in telephony the local loop (also referred to as a subscriber line) is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the carrier or telecommunications service provider’s network. Therefore a modem terminates an analog local loop is correct.
Question 8
How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?
A: Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface
B: Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic
C: Configure many sub-interfaces on the same subnet
D: Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces
Correct Answer: A
Explanation
Look at the figure below:
In the figure, router R1 has two point-to-point subinterfaces. The s0.1 subinterface connects to router R3 and the s0.2 subinterface connects to router R2. Each subinterface is on a different subnet.
Question 9
What can a network administrator utilize by using PPP Layer 2 encapsulation? (Choose three.)
A: VLAN support
B: compression
C: authentication
D: sliding windows
E: multilink support
F: quality of service
Correct Answers: B C E
Explanation
Same as question 4
Question 10
The Frame Relay network in the diagram is not functioning properly. What is the cause of the problem?
A: The Gallant router has the wrong LMI type configured
B: Inverse ARP is providing the wrong PVC information to the Gallant router
C: The S3 interface of the Steele router has been configured with the frame-relay encapsulation ietf command
D: The frame-relay map statement in the Attalla router for the PVC to Steele is not correct
E: The IP address on the serial interface of the Attalla router is configured incorrectly
Correct Answer: D
Explanation
At Attalla router, we find a deleted status but the next map statement indicates an active status, which if for Gallant. Therefore we can deduce the map statement for the PVC from Attalla to Steele is incorrect. Incorrect DLCI assignments that are configured normally shown up as “deleted” in the frame relay maps.
It’s “show frame-relay lmi”. You can read more here: http://www.cisco.com/en/US/docs/ios/12_1/wan/command/reference/wrdfrely.html#wp1022197
@9tut
NOTE 1: “cisco” in show frame-relay LMI is lmi-type NOT encapsulation frame-relay type.
R4(config)#int s0/0/1
R4(config-if)#frame-relay lmi-type ?
ansi
cisco
q933a
See illustration 1 below:
NOTE 2: Default encapsulation and LMI type value is cisco as shown below for both commands.
R4#sh frame-relay map
Serial0/0/1 (up): ip 68.110.171.98 dlci 200, dynamic, broadcast, CISCO, status defined, active
R4#sh frame-relay lmi
LMI Statistics for interface Serial0/0/1 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 3773 Num Status msgs Rcvd 3773
Num Update Status Rcvd 0 Num Status Timeouts 16
Illustration 2 below: to change encapsulation type…
Note 2: cisco is not displayed in the option ‘coz ietf also works between cisco and non-cisco device or between cisco devices.
R4#config t
Enter configuration commands, one per line. End with CNTL/Z.
R4(config)#int s0/0/1
R4(config-if)#encapsulation frame
R4(config-if)#encapsulation frame-relay ?
ietf Use RFC1490/RFC2427 encapsulation
R4(config-if)#encapsulation frame-relay ietf
R4#
%SYS-5-CONFIG_I: Configured from console by console
R4#sh frame-relay map
Serial0/0/1 (up): ip 68.110.171.98 dlci 200, dynamic, broadcast, IETF, status defined, active
R4#sh frame-relay lmi
LMI Statistics for interface Serial0/0/1 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 3793 Num Status msgs Rcvd 3793
Num Update Status Rcvd 0 Num Status Timeouts 16
Note 3: I changed the encapsulation from cisco to ietf and the “show frame-relay map” command showed the change.
**********************************************
Check the link below for more understanding about encapsulation frame-relay and LMI-Type:
https://learningnetwork.cisco.com/thread/37749
Therefore, the correct answer is “show frame-relay map” :)
@jad, @Eydz: Oh yes, I am sorry. My eyes tricked me. It should be “show frame-relay map” not “show frame-relay lmi”. Thanks Eydz for your detailed explanation :)
This is for those who needs latest dumps. This dumps and 9tut, its enough for you to pass exam. just remember me in your prayers. Best of luck…..
http://www.examcollection.com/cisco/Cisco.ActualTests.640-802.v2012-07-15.by.Sekhar.697q.vce.file.html
Good luck to you too. Mine is soon.
Hi! I would like to ask how could I verify the operation of PPP PAP encapsulation?
I try to configure two routers using the configuration below:
HQ router
HQ#config t
HQ(config)#username RO password orbit
HQ(config)#interface se0/0/0
HQ(config-if)#encapsulation ppp
HQ(config-if)#ppp authentication PAP
HQ(config-if)#ppp pap sent-username HQ password orbit
HQ(config-if)#end
Remote Office router
RO#Config t
RO(config)#username HQ password orbit
RO(config)#interface se0/0/0
RO(config-if)#encapsulation ppp
RO(config-if)#ppp authentication PAP
RO(config-if)#ppp pap sent-username RO password orbit
RO(config-if)#end
Hi there. Taking CCNA in a weeks. Can anyone send me latest dumps? gugunwasp@gmail.com? thank you!
hiiii…..i need to topology wan ..between to network by ospf protocol and cloude…..
quickly…couze …tomorwo ma examz …..i need it
Passed CCNA, question 2 from here.
I PASS MY CCNA TEST YESTERDAY SO THANKS TO GOD ALMIGHTY AND 9TUT.COM FOR INSIGHT AS WELL AS ALL MY FRIENDS OVER 9TUT.
GOOD LUCK TO THOSE WHO ARE GOING TO SIT FOR THEIR CCNA EXAMS THIS MOTH TO TAKE ALL THE 9UT QUESTIONS AND ANSWERS SERIOUS EXPECTIALLY THE SIMULATION QUESTIONS LIKE ACCESS LIST, EIGRP AND VTP LAB.
NOW THEY HAVE CHANGE THE FORMAT OF THE QUESTIONS A BIT SO WATCH OUT WELL AND STUDY THE AREAS OF WAN, SWITCHING AND ALSO THE DRAG AND DROP.
TRY TO LEARN THE LAB I MEAN THE SIMULATIONS: EIGRP THE PROBLEM ALWAYS BE THE AS NUMBER AND YOU ADVERTISE ONE NETWORK ON THE MAIN ROUTER FOR ADJACENCY TO FORM.
ACCESS LIST THEY KEEP ON CHANGING THE HOST TO PERMIT FROM THE FINANCIAL SERVER BUT THE FORMAT TO SOLVE ARE ALL THE SAME LIKE THE ONE AT 9TUT.COM.
I WISH YOU ALL GOOD LUCK….
Taking CCNA in two days . Can anyone send me latest dumps?mosaradwan@yahoo.com? thank you!
I did some dumps and all the labs but im not pretty confident enough. If anyone having the latest dumps please send them to crbc2600@gmail.com . Im gonna take the exam soon. thanks
@ 9tut …I failed the exam due to getting a 0 on “Implement and verify WAN links” …I don’t know what I did wrong,,,,is there a simulation or drag and drop or multiple choice question that I just didn’t do right in order for me to have gotten a 0??
Hello everyone, I’m looking to take my CCNA in a few days and I’m a bit worried in not being fully prepared. I would be truly honored and grateful for any useful information and dumps you can provide and send to bkboi81@yahoo.com
Question 7 on CCNA 2nd try today
@HODORI702 Sorry about the result. what do you mean to implement wan links.
Which command allows you to verify the encapsulation type (CISCO or IETF) for a frame relay link?
A. show framerelay map
B. show framerelay lmi
C. show inter serial
D. show framerelay pvc
1) correct is “sh frame-relay map”
RouterA#show frame-relay map
Serial0 (up): ip 157.147.3.65 dlci 980(0x3D4,0xF440), dynamic,
broadcast,, status defined, active
#show frame-relay map
Serial0/0/0 (up): ip 10.1.1.2 dlci 102 (0×66, 0×1860), static, broadcast, CISCO, status defined, active
2)# sh interfaces Serial
% Incomplete command.
you need to write to check interface options
i am planning for exam tomorrow
Hi,
I passed my CCNA test today (scored 973).
I would like to thank this site which have greatly helped me.
I’ve also used the prepkind dumps.
C U in my CCNP preparations :)
Please let me know if you’re looking for a article writer for your weblog. You have some really great articles and I believe I would be a good asset. If you ever want to take some of the load off, I’d really like to write some articles for your blog in exchange for a link back to mine. Please shoot me an email if interested. Kudos! Audrea Egersdorf http://gcsc.org/index.php/member/30890
q7 in today exam
gained 60marks..
Failed 770/1000. There were a ton of WAN questions on the test.
a little bit challenging, but am getting it right
Pliz i will sit for the exam next month, can someone send me the latest dumps on email: olesimbe@yahoo.com
Failed twice now, 815, and 775. WAN questions are quite difficult, and i have a ton of them too.
Both times ive got 33% for implement and verify WAN links. Is that due to a SIM?
i need a help i need latest ccna dump and i will appreciate that
this is my email (mca.1990@hotmail.com)
my exam is too close
thanks guys
Fail score 815. in the WAN seccion i got 0% , sucks
I don´t know where is it uset nowadays, i think is out of use.
Don`t worry, i felt the test easy, I think focusing in WAN seccion , it could be the key
Hello friends,
I have a query from my office requirement. NEED to install a test server on a system and run the web application with in my LAN network say ipaddress 10.108.122.25 255.255.255.0(system IP )
THAT application has to accessed by some X user outside the network from different STATE.
My boss asking me to provide an IP address to allow that X user to get access of this applicaiton for testing purpose.
Please help me out with the query
thank you all
email:outlandish_05@yahoo.com
I passed thee CCNA today I didn’t have a lot of WAN questions. EIGRP, VTP, ACCESS-List lab was on the exam
Hello TJ.
Congratulations.
Can you supply the latest dumps on e-mail : laursorin@yahoo.co.uk
Thanks.
What a shame i failed scored 815 lots of questions on here.
Are there no ISDN questions in CCNA anymore?
thanks to God!!!!thanks to 9tut!!!
any one send me all lab available on 9tut.com of eigrp vtp access list
on princektk88@yahoo.com
Is there any frame relay lab in here? I can’t find any
Q 2,7,10 on CCNA exam today.
Q10 had diff names/IPs
q1 in exam today
ALHUMDOLILLAH
Thanks GOD I pass today. I recommend spike dump, 9tut, and for Urdu students urduitacademy.com. All questions came from spike dump and labs from 9tut. Thanks spike, 9tut and Mr. Kashif from urduitacademy…any query —> ks_jafry@yahoo.com
Q2 on exam today
hi there can anyone please send me latest dump and any websites or tutorial which my help to pass the exam
email:ahmedfaaf@hotmail.co.uk
thanks friends
can someone email me the latest dumps please! I took my exam today for the first time and didn’t pass =( I’m so frustrated…….thanks for your help
I guess it would help if I put my email address: shannon.boegel@gmail.com
Thank you for everthing 9tut!!
I passed my exam 907/1000
VTP Sim, EIGRP and ACL 2
Also, I saw a few question about frame relay I havent seen before – be careful
Thanks for everything 9tut, could someone please send to me the latest dump – ipchecklist@hotmail.com