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
Yeah about Q7, the ipv6 address provided should include prefix otherwise the question is a bit confusing.
like ::/0 is a valid addr, but is ::/[other prefix] valid?
and 2000::/128 is a valid ipv6 address, right?
Also, the meaning of “valid” is a little bit vague.
Like A, ::192:168:0:1 should be an ipv4-mapped-ipv6 address, right? But, 192,168,0,1 is shown in hex, so ::192:168:0:1 cannot be a valid ipv4 mapped address because 192:168:0:1 in hex is > 32bits.
A little bit more about that question 7:
dltec(config-if)#ipv6 address ::192:168:0:1/98
dltec(config-if)#ipv6 address 2002:c0a8:101::42/64
dltec(config-if)#ipv6 address 2003:dead:beef:4dad:23:46:bb:101/64
dltec(config-if)#ipv6 address ::/128
%FastEthernet0/0: Error: ::/128 is invalid
dltec(config-if)#ipv6 address 2000::/64
%FastEthernet0/0: Warning: 2000::/64 is a Subnet Router Anycast
dltec(config-if)#ipv6 address 2001:3452:4952:2837::/64
%FastEthernet0/0: Warning: 2001:3452:4952:2837::/64 is a Subnet Router Anycast
So all IPs are configurable with the correct prefix ID but :: you cannot configure, but we know that is an IPv6 address used when the interface is configured with auto configuration or DHCPv6 and is requesting it´s address without the final IP address as temporary state.
@ 9tut… Please add another question here in IPv6 which I encountered during my CCNA exam:
Which IPv6 address used the all-rip-routers multicast group as the destination address for RIP updates?
Answer: FF02::9
can anybody please send me latest dumps of ccna to prashanth4186@gmail.com.will be grateful to you.
melvin
@Jacky-John
Any proper advise before I take the CCNA exam? Am really still struggling with IPv6.
Thank u in advance!
TY 9tut.
Today I have passed the CCNA. (860/825)
50 questions 3 labs (VTP, EIGRP, ACL). 35 from 9tut.
Also thanks a lot Brar and Sekhar (still valid from examcollection)
Ty again 9tut
from here Q 2 (and another question regardinf the ipv6 – to chose the right one )
Q7:
Answer A – ::192:168:0:1 could be wrong since IPv4-Compatible IPv6 addresses were depreciated. Read in RFC4291: “From The “IPv4-Compatible IPv6 address” is now deprecated because the current IPv6 transition mechanisms no longer use these addresses. New or updated implementations are not required to support this address type” (http://tools.ietf.org/html/rfc4291)
No more trying to memorize ip adresses once ipv6 goes mainstream…….LOL.
I need to know that in question 7 is F a valid IpV6 address? Some dumps say it is not.
on 11th am certifying ccna 640-802
hope I make it
on 11th am certifying ccna 640-802
hope I make it
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@9tut
F – 2001:3452:4952:2837::
in the last question
If we add :: then it becomes Prefix ??
this is not valid ip address i gues ???
am i correct ???? Please Check this ….Thank you
ohh sorry not last one it is Q.7
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@9tut: Answer A in Q7 is wrong, could you fix it?
Here is what Wikipedia says about this address: “The 96-bit zero-value prefix ::/96, originally known as IPv4-compatible addresses, was mentioned in 1995[37] but first described in 1998.[43] This class of addresses was used to represent IPv4 addresses within an IPv6 transition technology. Such an IPv6 address has its first (most significant) 96 bits set to zero, while its last 32 bits are the IPv4 address that is represented. In February 2006, the Internet Engineering Task Force (IETF) has deprecated the use of IPv4-compatible addresses”.
@9tut
what is the real answer in Q7 ?
Please correct this
Loopback address ::1
Link-local address FE80::/10
Unique Local address FC00::/7 ( Site-local address FEC0::/10 is not correct )
Global address 2000::/3
Multicast address FF00::/8
3FFF:FFFF::/32 reserved for examples and documentation
2002::/16 Used with 6to4 Tunneling
site-local is replaced with Unique Local
Got a question today about ipv6, tehcniques to map ipv4 to ipv6.. anyone else seen questions. not sure on answers but somewhere
DHCPv6
statically configure
dual stack
anyoe know this quesiton??
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@theone,
Its Dual Stack.
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Can anybody explain me why in Q7
they said that “::” is correct (valid address) and “2000::” is not correct
WHILE in the website https://learningnetwork.cisco.com/thread/34410
they say different things.
I’m waiting for the answer – Thanks
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Just passed.
Guys this site has all you need to pass. Study this site well then do one or two dumps only
This doesn’t have all that’s necessary. One of the IPv6 questions i had was regarding all-RIP-router. Please provide latest dumps to jtrashbox@gmail.com
@ 9tut… Please add another question here in IPv6 which I encountered during my CCNA exam:
Which IPv6 address used the all-rip-routers multicast group as the destination address for RIP updates?
Answer: FF02::9
—I got this one too on my exam recently—
@J: Yes, thanks for your information. We added it.
Hi guys,
I’m taking my exam in two weeks, can someone send the latest dumps to manuregimbald@hotmail.com
9tut, how about this question :
Identify the four valid IPV6 addresses.
A. 2000::
B. ::192:168:0:1
C. 2001:3452:4952:2837::
D. 2003:deaD.beef.4dad:23:46:bB.101
E. ::
F. 2002:c0a8:101::42
Just took the 640-802 test and had two new IPv6 questions. I can’t remember what the exact questions were but one was asking about a tunnelling technique that uses UDP = Terado Tunnelling and the other asked about enabling IPv6 routing on a router for which the only answer seemed to be #ipv6 unicast-routing.
@Anonymous
B, C, D, E, F
Lee, you are wrong, the correct answer is: ipv6 address “address”
woop, sorry i misunderstood, you.
@Lee
The question about IPV6 routing is like is in the SEKHAR dumps.
Q. Which command enables IPV6 forwarding on a cisco router?
A. IPV6 host
B. IPV6 unicast-routing
C. IPV6 local
D. IPV6 neighbor
Answer:
B. IPV6 unicast-routing
@9tut
please add this question.
IN THE EXAM… ACL sims… is there an option there to click finished or just click on next? after configuring…
Question 4 was in my today exam.
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Q7 option F is it valid IP address?
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Can any explain me Q8 & Q9
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