CCNA – Troubleshooting 2
Here you will find answers to Trouble Shooting Questions (Part 2)
Question 1:
A network administrator is troubleshooting the OSPF configuration of routers R1 and R2. The routers cannot establish an adjacency relationship on their common Ethernet link. The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2. Based on the information in the graphic, what is the cause of this problem?
A. The OSPF area is not configured properly.
B. The priority on R1 should be set higher.
C. The cost on R1 should be set higher.
D. The hello and dead timers are not configured properly.
E. A backup designated router needs to be added to the network.
F. The OSPF process ID numbers must match.
Answer: D
Question 2:
This graphic shows the results of an attempt to open a Telnet connection to router ACCESS1 from router Remote27. Which of the following command sequences will correct this problem?
A. ACCESS1(config)# line console 0
ACCESS1(config-line)# password cisco
B. Remote27(config)# line console 0
Remote27(config-line)# login
Remote27(config-line)# password cisco
C. ACCESS1(config)# line vty 0 4
ACCESS1(config-line)# login
ACCESS1(config-line)# password cisco
D. Remote27(config)# line vty 0 4
Remote27(config-line)# login
Remote27(config-line)# password cisco
E. ACCESS1(config)# enable password cisco
F. Remote27(config)# enable password cisco
Answer: C
Question 3:
Refer to the exhibit. A network administrator attempts to ping Host2 from Host1 and receives the results that are shown. What is a possible problem?
A. The link between Host1 and Switch1 is down.
B. TCP/IP is not functioning on Host1
C. The link between Router1 and Router2 is down.
D. The default gateway on Host1 is incorrect.
E. Interface Fa0/0 on Router1 is shutdown.
F. The link between Switch1 and Router1 is down.
Answer: C
Explanation:
In this question, Host1 wants to ping Host2 but it receives a reply from the interface Fa0/0 of Router1 (10.1.1.1/24) that the “destination host unreachable”.
If the link between Host1 and Switch1 is down or the link between Switch1 and Router1 is down then Host1 can not receive this reply -> A and F are not correct.
Host1 can receive a reply from 10.1.1.1 -> the TCP/IP is working properly -> B is not correct.
For answer D, if the default gateway was not configured correctly on Host1 (in this case the default gateway should be 10.1.1.1/24) then 10.1.1.1 can not receive the ping packets from Host1 and can not reply for Host1 that the destination is unreachable -> D is not correct.
Interface Fa0/0 on Router1 replies for the ping packets from Host1 so it is up -> E is not correct. If the interface Fa0/0 on Router is shutdown then we will receive a message of “Request timed out”, not “Destination host unreachable”.
Answer C is correct because we can get a reply from the interface Fa0/0 of Router1 so the link between Host1 and Router1 should be fine -> the problem lies at the other side of Router1. But if the link between Router2 and Host2 is down then we will receive a reply from interface S0/1 of Router2 that the “destination host unreachable”. Therefore the problem can just be the link between Router1 and Router2.
Question 4:
Refer to the exhibit. Hosts in network 192.168.2.0 are unable to reach hosts in network 192.168.3.0. Based on the output from RouterA, what are two possible reasons for the failure? (Choose two)
A. The cable that is connected to S0/0 on RouterA is faulty.
B. Interface S0/0 on RouterB is administratively down.
C. Interface S0/0 on RouterA is configured with an incorrect subnet mask.
D. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.
E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.
F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA.
Answer: E F
Question 5:
When upgrading the IOS image, the network administrator receives the exhibited error message. What could be the cause of this error?
A. The new IOS image is too large for the router flash memory.
B. The TFTP server is unreachable from the router.
C. The new IOS image is not correct for this router platform.
D. The IOS image on the TFTP server is corrupt.
E. There is not enough disk space on the TFTP server for the IOS image.
Answer: B
The answer is D because the subnet mask would be 255.255.248.0. That will give you a wildcard mask of 0.0.7.255. The reason why you would have a 255.255.248.0 mask is because looking at the third octet of the IP address range given, the range of IP address from 8 to 15 will be 8. Since 8 is your increment, the mask can be either /13, /21, or /29. Looking at the possible answers, the only wildcard mask that would get you any of the 3 masks I mentioned would be D. The wildcard mask of 0.0.7.255 will get you a mask of /29, or 255.255.248.0.
@Gabiano
Your answer is correct but there is mistake in your explanation.
0.0.7.255 is wildcard mask of /21 not /29
/29 will have wild card mask of 0.0.0.7
And also with the increment of 8 the mask could be either /13, /21 or /29 but looking at the ip address we can say it belongs to /21 not /13 or /29 because in /13 only first octet remains same and in /29 only forth octet changes while the rest remain same but in this case the first and second remain same and the third and forth change so it must be /21.
Hi Guys,
Which dump from exam collection is valid now a days.
Here the dumps i’ve studied for, and of course, for the 9tut too.
I think its enough to pass the exam, i passed yesterday with 894/1000.
good luck.
https://www.dropbox.com/s/zcu7630r096l14j/Cisco.ActualTests.640-802.v2013-01-28.by.Spike.662q.vce
https://www.dropbox.com/s/vqecpkvx2q3skpc/ccna%20640-802%20pass4sure.v10.0.pdf
hi Diogo…Thanks a lot for the links but the last one seems to be broken,can you upload it again?
I am giving the exam of 9th May. Thanks again.
hi diogo .. thanks for your information. can u pls update the second link again?
q3 in today exam
Hi guys,
Please can anyone tell me if I can use the show cdp neignbors detail on the routeur?
Q1 & Q3 came to my exam today.
Pliz i will sit for the CCNA exam next month, can someone send me the latest dumps on email: olesimbe@yahoo.com
To said:
Yes, you can do show cdp neighbor details on routers. It will show only cisco’s equipment.
Can someone send me the latest dump
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please send me lastest dumps in my email
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I passed the CCNA exam 640-802 , so happy :)
I will advice everyone that this exam is not very simple .You have to concentrate and read the questions 3 times before you answer.Good Luck to everyone , if anyone needs any advice can email me at suse_X@hotmail.com
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Someone plesase explain why “If the link between Host1 and Switch1 is down or the link between Switch1 and Router1 is down then Host1 can not receive this reply -> A and F are not correct.””??
Thanks for advance!
Sorry,
I mean Q3.If the link between Host1 and Switch1 is down or the link between Switch1 and Router1 is down then Why host 2 can’t recieve the unreachable msg??
Please someone can explain Q4?Thank you so much!
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it is so easy problem i dviroseced it after week of trying ::just change the option from the router in 192.168.1.1 and choose dynamic IP instate of static IP not from the mobile like we always do but from the wireless option the save changes and bake to mobile >>settings>>connectivity >> wifi>>and select network you use and click on forget if it in static IP and leave it if it was in dynamic IP then nothing browse the internet normally i have wave 525a0sorry for bad english language