CCNA – IPv6 Questions
Here you will find answer to CCNA – IPv6 questions
If you are not sure about IPv6, please read my IPv6 tutorial
Question 1
As a CCNA candidate, you must have a firm understanding of the IPv6 address structure. Refer to IPv6 address, could you tell me how many bits are included in each filed?
A – 24
B – 4
C – 3
D – 16
Answer: D
Explanation:
The format of a IPv6 address is X:X:X:X:X:X:X:X where X is a 16-bit hexadecimal field. For example: 110A:0192:190F:0000:0000:082C:875A:132c
Question 2
In practical IPv6 application, a technology encapsulates IPv6 packets inside IPv4 packets, this technology is called what?
A – tunneling
B – hashing
C – routing
D – NAT
Answer: A
Question 3
Internet Protocol version 6 (IPv6) is the next-generation Internet Protocol version designated as the successor to IPv4 because IPv4 address space is being exhausted. Which one of the following descriptions about IPv6 is correct?
A – Addresses are not hierarchical and are assigned at random.
B – Broadcasts have been eliminated and replaced with multicasts.
C – There are 2.7 billion available addresses.
D – An interface can only be configured with one IPv6 address.
Answer: B
Question 4
Which two of these statements are true of IPv6 address representation? (Choose two)
A – The first 64 bits represent the dynamically created interface ID.
B – A single interface may be assigned multiple IPV6 addresses of any type.
C – Every IPV6 interface contains at least one loopback address.
D – Leading zeros in an IPV6 16 bit hexadecimal field are mandatory.
Answer: B C
Explanation:
Leading zeros in IPv6 are optional do that 05C7 equals 5C7 and 0000 equals 0 -> D is not corect.
Question 5
Which three of the following are IPv6 transition mechanisms? (Choose three)
A – 6to4 tunneling
B – GRE tunneling
C – ISATAP tunneling
D – Teredo tunneling
E – VPN tunneling
F – PPP tunneling
Answer: A C D
Explanation:
Below is a summary of IPv6 transition technologies:
6 to 4 tunneling: This mechanism allows IPv6 sites to communicate with each other over the IPv4 network without explicit tunnel setup. The main advantage of this technology is that it requires no end-node reconfiguration and minimal router configuration but it is not intended as a permanent solution.
ISATAP tunneling (Intra-Site Automatic Tunnel Addressing Protocol): is a mechanism for transmitting IPv6 packets over IPv4 network. The word “automatic” means that once an ISATAP server/router has been set up, only the clients must be configured to connect to it.
Teredo tunneling: This mechanism tunnels IPv6 datagrams within IPv4 UDP datagrams, allowing private IPv4 address and IPv4 NAT traversal to be used.
In fact, GRE tunneling is also a IPv6 transition mechanism but is not mentioned in CCNA so we shouldn’t choose it (there are 4 types of IPv6 transition mechanisms mentioned in CCNA; they are: manual, 6-to-4, Teredo and ISATAP).
Question 6
Which two descriptions are correct about characteristics of IPv6 unicast addressing? (Choose two)
A – Global addresses start with 2000::/3.
B – Link-local addresses start with FF00::/10.
C – Link-local addresses start with FE00:/12.
D – There is only one loopback address and it is ::1.
Answer: A D
Explanation:
Below is the list of common kinds of IPv6 addresses:
| Loopback address | ::1 |
| Link-local address | FE80::/10 |
| Site-local address | FEC0::/10 |
| Global address | 2000::/3 |
| Multicast address | FF00::/8 |
Question 7
Select the valid IPv6 addresses. (Choose all apply)
A – ::192:168:0:1
B – 2002:c0a8:101::42
C – 2003:dead:beef:4dad:23:46:bb:101
D – ::
E – 2000::
F – 2001:3452:4952:2837::
Answer: A B C D F
Explanation:
Answers A B C are correct because A and B are the short form of 0:0:0:0:192:168:0:1 and 2002:c0a8:0101:0:0:0:0:0042 while C are normal IPv6 address.
Answer D is correct because “::” is named the “unspecified” address and is typically used in the source field of a datagram that is sent by a device that seeks to have its IP address configured.
Answer E is not correct because a global-unicast IPv6 address is started with binary 001, denoted as 2000::/3 in IPv6 and it also known as an aggregatable global unicast address.The 2000:: (in particular, 2000::/3) is just a prefix and is not a valid IPv6 address.
The entire global-unicast IPv6 address range is from 2000::/128 to 3FFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF/128, resulting in a total usable space of over 42,535,295,865,117,307,932,921,825,928,971,000,000 addresses, which is only 1/8th of the entire IPv6 address space!
Question 8
What is the Multicast for all-router muticast access ?
A – FF02::4
B – FF02::3
C – FF02::2
D – FF02::1
Answer: C
(New) Question 9
Which IPv6 address used the all-rip-routers multicast group as the destination address for RIP updates?
Answer: FF02::9
u can trate :: as default gate way like 0.0.0.0 in ipv4
@lappy
i had my doubt about it too so i went googling
“The 128-bit IPv6 address can be abbreviated with the following rules:
*Rule one: Leading zeroes within a 16-bit value may be omitted. For example, the address fe80:0000:0000:0000:0202:b3ff:fe1e:8329 may be written as fe80:0:0:0:202:b3ff:fe1e:8329
*Rule two: One group of consecutive zeroes within an address may be replaced by a double colon. For example, fe80:0:0:0:202:b3ff:fe1e:8329 becomes fe80::202:b3ff:fe1e:8329″
http://en.wikipedia.org/wiki/IPv6
there’s also an example that looks like the address from option F of question 7:
http://en.wikipedia.org/wiki/File:Ipv6_address_leading_zeros.svg
@xallax, so is d option F correct or not? Thnk you!
@hanat
yes, option F is correct too.
Please let me know why this ipv6 is not correct
2001:0DB8:0000:130F:0000:0000:08GC:140B
@H4Ser
2001:0DB8:0000:130F:0000:0000:08GC:140B is indeed not correct because it has letter “G” in it. hexadecimal value can only be up to “F”
Hi, Appreciate if someone could send me the latest dumps at treepanel.ken@hotmail.com , i plan to take the exams at the end of sep.
Thanks.
@anyone, i need a link to d latest dump that one can download and it will work.
@ stantheman thnks, d mystery is abt IPv6 is cleared nw!
i had this Q in my exam – IPv4 127.0.0.1 converted to what IPV6 address
answer is ::1
Can any one pls give me a link to the latest ccna dumps. I will be writing in November.
Thanks alot. Passed my CCNA yesterday.
hey guys ive cracked it!! @lappy is right option F of question 7 is not correct @9tut please update this is because ipv6 is in hexadecimal but option F is in decimal which makes it invalid.. @patso pls what were ur sim questions?
@nneka22: F is correct. That IPv6 is correct, a number in decimal is also the same in hexadecimal.
ok 9tut thanks…option A is similar to F as per all decimal but on ACME it says option F and E are the incorrect ipv6 examples
why the Ipv6 address
2001:3452:4952:2837::
is marked invalid in one of the dumbs???Any ne having any explainiation to this In my opinion it is a valid address
Conflicting answers between examcollections and 9TUT.
Could someone help me out?
2001:3452:4952:2837::
valid IPv6 or not?
Thank you!
same question with chris
2001:3452:4952:2837:: is this valid ipv6 address ???
quick answer pls.. thanks
Question 7:
F – 2001:3452:4952:2837::
I think this is not a valid IPv6 address, because it’s a prefix, not an address.
The first 64 bits are all covered, and none of the Interface ID bits are 1. So this is not an address that can be allocated to a host.
@Xel: Question 7 only asks about valid IP address, not about assignable address to host so F is still correct.
@9tut
if they want 4 answers,what will be answers?
@9tut
i saw Q7 in one dump which want 4 valid ipv6 address,what will be answers? please reply
@9tut
Could u tell me why 2000:: is not an ipv6 address?
And what does a valid address mean?
you said that 2001:3452:4952:2837:: is a valid IP address.
i think that address is a network address. If a network address is valid than 2000:: is still valid!
@sovy: Yes, I agree 2001:3452:4952:2837:: may not be a valid address. It depends on the prefix length. Same for 2000::
So if the question requires to choose 4 answers we should choose A B C D only. If it requires more than 4 answers, we should add F, then E.
Question 4 & 5 were on the ICND2 today. A friend told me he had Question 7 on his ICND2 exam a week or two ago.
Can someone please send me the link to latest ccna dumps dobles19@hotmail.com
Thank you!
Can someone please send me the link to latest ccna dumps cronoboricua@hotmail.com
Much Thanks to all!
Hi Today i Cleared CCNA with very good marks
My Suggestion is Stick With Basic , Because MOst concept is Same But With Different Question
please send me latest dumps…….sunil920@gmail.com……………thnks in advance……
can someone please send me the latest dump for ccna, I will be retaking it emmatx04@yahoo.com
If you have latest dump please send shiferaw123@yahoo.com
Can somebody please explain what the /3 means at the end on the ipv6 address?
“Link-local addresses start with 2000::/3.”
Thanks
Oops, I just saw the tutorial link at the top of the page so I’ve found the answer to the above……
can someone explain Q8 to me?
@lydia
hello
please read here:
http://www.iana.org/assignments/multicast-addresses/multicast-addresses.xml
thank you
Hello Networking Friends
I have booked for CCNA 640-802 on Jan 12.Could anyone assist me getting real dump that can help me getting 900+ marks in CCNA
However can anyone give more questions and answers of IPV6 here and justify their answers in discussion.
Thank again in advance.
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Hi
can someone explain Q8 plz
thanks in advance
@jawad
“hello
please read here:
http://www.iana.org/assignments/multicast-addresses/multicast-addresses.xml
thank you”
hey networking friends can you help me with a real dump i want write on the 4th of December
@9tut
C – Every IPV6 interface contains at least one loopback address.
how this can be right , i only know about loop back that is ::1/128 .
some one can explain me?
Dear Experts,
i am slapping my self to identify the valid IPV6 IP.. can any one explan me clearly with condition or rules to identify? like condition no:1 or Rule no: 1
Example:
Which option is a valid IPV6 address?
A. 2001:0000:130F::099a::12a –> Not correct because rule no:1 – It has 9 octacts?
B. 2002:7654:A1AD:51:81AF:CCC1 —> Not correct but why? what is rule?
C. FEC0: ABCD:WXYZ:0067:2A4 –> Not correct becasue rule no:2 –it has WXYZ which correct but which rule ??
Ans: D
Why what is the diff between B & D ?
@kiran
where is answer D ?
@ Eng -Support
oops forgot
d. 2004:1:25A4:886F::1
@ KIRAN UNDURTHI
Which option is a valid IPV6 address?
A. 2001:0000:130F::099a::12a –> Not correct because “::” CAN BE USED ONLY ONCE IN THE ADDRESS.
B. 2002:7654:A1AD:51:81AF:CCC1 —> Not correct BECAUSE THERE ARE ONLY 6 OCTECTS… IPV6 ADDRESS CONTAINS 8 OCTECTS.
C. FEC0: ABCD:WXYZ:0067:2A4 –> Not correct becasue IPV6 ADDRESS CONTAINS CHARACTER, 0-9 & A-F ONLY.
D. 2004:1:25A4:886F::1 –> CORRECT… IT CAN ALSO WRITTEN AS
2004:0001:25A4:886F:0000:0000:0000:0001
>>> hope this clears your confusion… i used to be confused about ipv6 a lot… read ipv6 tutorials again & again. solve questions & think abt why the correct ans is correct & others are wrong. best luck.
can anyone an clarify does every ipv6 interface should have atleast one loopback interface or not ?
Can someone please send me the latest dump for ccna thanks gcfire1@hotmail.com
@Sheikh
Yes, every ipv6 interface should have atleast one loopback… which is ::1
@ 9tut,
1000 thanks for you, i had gone through exam today got 920/1000.
All queastions are almost from this site. Thanks a lot
@ All readers and Experts,
Thanks for for your comments and queastions those also clears some of queastions and get better idea.
I am looking forward to take CCNP – Switching before end of Dec-2011. Give me some suggeastions.
KIran – Singapore
kiran.undurthi@gmail.com