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ICND 2 > Troubleshooting IPv6 Connectivity > Flashcards

Troubleshooting IPv6 Connectivity Flashcards

1
Q

Which three are characteristics of an IPv6 anycast address? (Choose three.)

A. one-to-many communication model
B. one-to-nearest communication model
C. any-to-many communication model
D. a unique IPv6 address for each device in the group
E. the same address for multiple devices in the group
F. delivery of packets to the group interface that is closest to the sending device

A

B. one-to-nearest communication model

E. the same address for multiple devices in the group

F. delivery of packets to the group interface that is closest to the sending device

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2
Q

Which two are features of IPv6? (Choose two.)

A. anycast
B. broadcast
C. multicast
D. podcast
E. allcast

A

A. anycast

C. multicast

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3
Q

Which two data link layers are supported by Cisco IOS Software for IPv6? (Choose two.)

A. FDDI
B. PPP
C. NBMA
D. Frame Relay SVC
E. Frame Relay PVC

A

B. PPP

E. Frame Relay PVC

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4
Q

Which IPv6 address is valid?

A. 2001:0db8:0000:130F:0000:0000:08GC:140B
B. 2001:0db8:0:130H::87C:140B
C. 2031::130F::9C0:876A:130B
D. 2031:0:130F::9C0:876A:130B

A

D. 2031:0:130F::9C0:876A:130B

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5
Q

Identify the four valid IPv6 addresses. (Choose four.)

A. ::
B. ::192:168:0:1
C. 2000::
D. 2001:3452:4952:2837::
E. 2002:c0a8:101::42
F. 2003:dead:beef:4dad:23:46:bb:101

A

A. ::

B. ::192:168:0:1

E. 2002:c0a8:101::42

F. 2003:dead:beef:4dad:23:46:bb:101

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6
Q

Which statement about IPv6 is true?

A. Addresses are not hierarchical and are assigned at random.
B. Only one IPv6 address can exist on a given interface.
C. There are 2.7 billion addresses available.
D. Broadcasts have been eliminated and replaced with multicasts.

A

D. Broadcasts have been eliminated and replaced with multicasts.

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7
Q

In which integration method is an IPv6 packet encapsulated within an IPv4 protocol?

A. dual-stack
B. proxy
C. dot1q
D. tunneling

A

D. tunneling

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8
Q

What is the alternative notation for the IPv6 address
B514:82C3:0000:0000:0029:EC7A:0000:EC72?

A. B514 : 82C3 : 0029 : EC7A : EC72
B. B514 : 82C3 :: 0029 : EC7A : EC72
C. B514 : 82C3 : 0029 :: EC7A : 0000 : EC72
D. B514 : 82C3 :: 0029 : EC7A : 0 : EC72

A

D. B514 : 82C3 :: 0029 : EC7A : 0 : EC72

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9
Q

Which address is the IPv6 all-RIP-routers multicast group address that is used by RIPng as the destination address for RIP updates?

A. FF02::6
B. FF02::9
C. FF05::101
D. FF02::A
C. FF05::101
D. FF02::A

A

B. FF02::9

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10
Q

Which IPv6 address is the equivalent of the IPv4 interface loopback address 127.0.0.1?

A. ::1
B. ::
C. 2000::/3
D. 0::/10

A

A. ::1

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11
Q

Which IPv6 address is the all-router multicast group?

A. FF02::1
B. FF02::2
C. FF02::3
D. FF02::4

A

B. FF02::2

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12
Q

Which IPv6 routing protocol uses multicast group FF02::9 to send updates?

A. static
B. RIPng
C. OSPFv3
D. IS-IS for IPv6

A

B. RIPng

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13
Q

Which name describes an IPv6 host-enabled tunneling technique that uses IPv4 UDP, does not require dedicated gateway tunnels, and can pass through existing IPv4 NAT gateways?

A. manual 6to4
B. dual stack
C. dynamic
D. Teredo

A

D. Teredo

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14
Q

Which three approaches can be used while migrating from an IPv4 addressing scheme to an IPv6 scheme. (Choose three.)

A. enable dual-stack routing
B. configure IPv6 directly
C. configure IPv4 tunnels between IPv6 islands
D. use proxying and translation to translate IPv6 packets into IPv4 packets
E. statically map IPv4 addresses to IPv6 addresses
F. use DHCPv6 to map IPv4 addresses to IPv6 addresses

A

A. enable dual-stack routing

C. configure IPv4 tunnels between IPv6 islands

D. use proxying and translation to translate IPv6 packets into IPv4 packets

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15
Q

Which of these represents an IPv6 link-local address?

A. FE80::380e:611a:e14f:3d69
B. FE81::280f:512b:e14f:3d69
C. FEFE:0345:5f1b::e14d:3d69
D. FE08::280e:611:a:f14f:3d69

A

A. FE80::380e:611a:e14f:3d69

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16
Q

The network administrator has been asked to give reasons for moving from IPv4 to IPv6.
What are two valid reasons for adopting IPv6 over IPv4? (Choose two.)

A. no broadcast
B. change of source address in the IPv6 header
C. change of destination address in the IPv6 header
D. Telnet access does not require a password
E. autoconfiguration
F. NAT

A

A. no broadcast

E. autoconfiguration

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17
Q

Which two of these statements are true of IPv6 address representation? (Choose two.)

A. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
B. A single interface may be assigned multiple IPv6 addresses of any type.
C. Every IPv6 interface contains at least one loopback address.
D. The first 64 bits represent the dynamically created interface ID.
E. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.

A

B. A single interface may be assigned multiple IPv6 addresses of any type.
C. Every IPv6 interface contains at least one loopback address.

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18
Q

What are three features of the IPv6 protocol? (Choose three.)

A. optional IPsec
B. autoconfiguration
C. no broadcasts
D. complicated header
E. plug-and-play
F. checksums

A

B. autoconfiguration

C. no broadcasts

E. plug-and-play

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19
Q

Which two statements describe characteristics of IPv6 unicast addressing? (Choose two.)

A. Global addresses start with 2000::/3.
B. Link-local addresses start with FE00:/12.
C. Link-local addresses start with FF00::/10.
D. There is only one loopback address and it is ::1.
E. If a global address is assigned to an interface, then that is the only allowable address for the interface.

A

A. Global addresses start with 2000::/3.

D. There is only one loopback address and it is ::1.

20
Q

Which option describes a difference between EIGRP for IPv4 and IPv6?

A. Only EIGRP for IPv6 advertises all connected networks.
B. Only EIGRP for IPv6 requires a router ID to be configured under the routing process-
C. AS numbers are configured in EIGRP but not in EIGRPv3.
D. Only EIGRP for IPv6 is enabled in the global configuration mode.

A

B. Only EIGRP for IPv6 requires a router ID to be configured under the routing process-

21
Q

What is the value of a global unicast IPv6 address? These are equivalent to the IPv4 public addresses.

A

200::/3

22
Q

What is the value of a unique-local IPv6 address? These are equivalent to private IPv4 addresses.

A

FC00::/7

23
Q

What is the value of a link-local address? These are automatically configured IPv6 addresses on an interface.

A

FE80::/10 - FEB0::/10

24
Q

What is the value of an IPv6 loopback address? These are used for local testing functions.

A

::1

25
Q

What is the value of an unspecified IPv6 address? THis is typically used in the source address field of the packet when an interface doesn’t have an address and is trying to acquire one dynamically.

A

::

26
Q

What command verifies end-to-end transport layer connectivity for SMTP from a PC over an IPv6 path?

A

telnet [IPv6 address 25]

27
Q

How does the EUI-64 address format of the system ID for stateless autoconfiguration expand the 48-bit MAC address?

A

It inserts FFFE into the middle 16 bits

28
Q

What command will show that the current IPv6 path matches the desired path to reach destinations?

A

show ipv6 route

29
Q

What type of IPv6 address is advertised inside route advertisements as a default gateway?

A

link-local

30
Q

What command verifies whether any IPv6 ACLs are configured on a router?

A

show ipv6 access list

31
Q

What windows command allows you to see the ip configuration on a PC?

A

ipconfig

32
Q

In stateless autoconfiguation, what is advertised to PCs that are using router advertisements?

A

default gateway

33
Q

What command creates an extended named ACL for IPv6?

A

ipv6 access-list [name]

34
Q

What command applies the ACL to an interface?

A

ipv6 traffic-filter [name] [in/out]

35
Q

You issue the show ipv6 neighbors command. A mapping in the Stale state or the Delay state indicates what?

A

Connection was established but expired

36
Q

You issue the show ipv6 neighbors command. What does a mapping in the Incomplete state mean?

A

It is in the process of being established

37
Q

What are the five states that mapping exists in the “show ipv6 neighbors” command?

A

Incomplete (INCMP)

Reachable (REACH)

Stale (STALE)

Delay (DELAY)

Probe (PROBE)

38
Q

What mapping state with the show ipv6 neighbors command indicates that neighbor confirmation messages are being re-sent to the remote interface on an ongoing basis in an attempt to re-establish the mapping?

A

Probe

39
Q

The “ipv6 address autoconfig” command configures an IPv6 interface to automatically assign itself a global unicast IPv6 address by using _____

A

SLAAC

40
Q

To obtain an EUI-64 address, you should issue the what command?

A

ipv6 address eui-64

41
Q

What commands allow you to determine what IPv6 addresses have been assigned to interfaces?

A

show ipv6 interfaces

show ipv6 interface brief

42
Q

What command configures an interface to automatically assign itself a global unicast IPv6 address by using Stateless Address Automatic Configuration (SLAAC)?

A

ipv6 address autoconfig

43
Q

Configurations occur based on information that is sent in router advertisements from an IPv6 gateway operating on the same network segment.

A

SLAAC

44
Q

When a link-local interface is active on the segment, it can announce itself and receive router advertisements from where?

A

router that is operating on the same segment

45
Q

If an IPv6 router exists and can function as an _____, it will advertise that functionality as well as the globally unique prefix with which it is configured and with which connected nodes should be used.

A

IPv6 gateway

46
Q

Because of the large address space provided by IPv6, what can hosts use during the manufacturing process as part of the interface ID portion of their IPv6 address? What is this known as?

A

MAC address

Extended unique identifier (EUI)-64 interface ID

47
Q

What command configures an interface to obtain an EUI-64 address?

A

ipv6 address eui-64

ICND 2 (16 decks)

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