A Unique Quiz On CCNA – IPv6

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

::1

::

2000::/3

0::/10

The IPv6 address ::1 is the equivalent of the IPv4 interface loopback address 127.0.0.1. In both IPv4 and IPv6, the loopback address is used to test network connectivity on the local host. The IPv6 address ::1 is specifically reserved for the loopback address, just like 127.0.0.1 is reserved for loopback in IPv4.

Explanation

The IPv6 address ::1 is the equivalent of the IPv4 interface loopback address 127.0.0.1. In both IPv4 and IPv6, the loopback address is used to test network connectivity on the local host. The IPv6 address ::1 is specifically reserved for the loopback address, just like 127.0.0.1 is reserved for loopback in IPv4.

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

Multicast

Broadcast

Allcast

Podcast

Anycast

Anycast IPv6 addresses are 128-bit identifiers for interfaces and sets of interfaces. A packet sent to an anycast address is delivered to one of the interfaces identified by that address (the “nearest” one, according to the routing protocols’ measure of distance)

Explanation

Anycast IPv6 addresses are 128-bit identifiers for interfaces and sets of interfaces. A packet sent to an anycast address is delivered to one of the interfaces identified by that address (the “nearest” one, according to the routing protocols’ measure of distance)

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3. Which command enables IPv6 forwarding on a cisco router?

IPv6 host

IPv6 unicast-routing

IPv6 local

IPv6 neighbor

An example of configuring RIPng (similar to RIPv2 but is used for IPv6) is shown below:

Router(config)#ipv6 unicast-routing (Enables the forwarding of IPv6 unicast datagrams globally on the router)
Router(config)#interface fa0/0
Router(config-if)#ipv6 rip 9tut enable (9tut is the process name of this RIPng)

Explanation

An example of configuring RIPng (similar to RIPv2 but is used for IPv6) is shown below:

Router(config)#ipv6 unicast-routing (Enables the forwarding of IPv6 unicast datagrams globally on the router)
Router(config)#interface fa0/0
Router(config-if)#ipv6 rip 9tut enable (9tut is the process name of this RIPng)

4. How many bits are contained in each field of an IPv6 address?

24

4

8

16

An IPv6 address consists of 128 bits, divided into eight groups of 16 bits each. Each field of an IPv6 address contains 16 bits.

Explanation

An IPv6 address consists of 128 bits, divided into eight groups of 16 bits each. Each field of an IPv6 address contains 16 bits.

5. Which of these represents an IPv6 link-local address?

FE08::280e:611:a:f14f.3d69

FE81::280f.512b:e14f:3d69

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

FEFE:0345:5f1b::e14d:3d69

The range of IPv6 link-local address (similar to the Windows auto-configuration IP address of 169.254.x.x.) is FE80::/10. For more information about IPv6, please read my IPv6 tutorial.

Explanation

The range of IPv6 link-local address (similar to the Windows auto-configuration IP address of 169.254.x.x.) is FE80::/10. For more information about IPv6, please read my IPv6 tutorial.

6. Which IPv6 address is the all-router multicast group?

FF02::1

FF02::2

FF02::3

FF02::4

The correct answer is FF02::2. In IPv6, multicast addresses are used to send data to a group of devices. FF02::2 is the all-router multicast group address, which means it is used to send packets to all routers on a network.

Explanation

The correct answer is FF02::2. In IPv6, multicast addresses are used to send data to a group of devices. FF02::2 is the all-router multicast group address, which means it is used to send packets to all routers on a network.

7. Which of the following IPv6 addresses is valid?

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

2001:0DB8:0000:130F:0000:0000:08GC:140B

2001:0DB8:0:130H::87C:140B

2031::130F::9C0:876A:130B

The correct IPv6 address, 2031:0:130F::9C0:876A:130B, is valid because it follows the proper format for IPv6 addresses. It contains eight groups of hexadecimal digits, separated by colons, with "::" representing consecutive groups of zeros. It does not contain any letters outside the range of A-F, making it a valid IPv6 address.

Explanation

The correct IPv6 address, 2031:0:130F::9C0:876A:130B, is valid because it follows the proper format for IPv6 addresses. It contains eight groups of hexadecimal digits, separated by colons, with "::" representing consecutive groups of zeros. It does not contain any letters outside the range of A-F, making it a valid IPv6 address.

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

Global addresses start with 2000::/3

Link-local addresses start with FE00:/12

Link-local addresses start with FF00::/10

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

If a global address is assigned to an interface, then that is the only allowable address for the interface.

Below is the list of common kinds of IPv6 addresses:

Explanation

Below is the list of common kinds of IPv6 addresses:

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

One-to-many communication model

One-to-nearest communication model

Any-to-many communication model

A unique IPv6 address for each device in the group

The same address for multiple devices in the group

Delivery of packets to the group interface that is closest to the sending device

An IPv6 anycast address is characterized by a one-to-nearest communication model, where a packet is delivered to the nearest interface among a group of devices sharing the same address. This allows for efficient routing and load balancing. Additionally, multiple devices in the group share the same anycast address, providing redundancy and fault tolerance.

Explanation

An IPv6 anycast address is characterized by a one-to-nearest communication model, where a packet is delivered to the nearest interface among a group of devices sharing the same address. This allows for efficient routing and load balancing. Additionally, multiple devices in the group share the same anycast address, providing redundancy and fault tolerance.

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

Static mapping of IPv4 address to IPv6 addresses

Configuring IPv4 tunnels between IPv6 islands

Use DHCPv6 to map IPv4 addresses to IPv6 addresses

Use proxying and translation (NAT-PT) to translate IPv6 packets into IPv4 packets

Configure IPv6 directly

Enable dual-stack routing

The three approaches that can be used while migrating from an IPv4 addressing scheme to an IPv6 scheme are configuring IPv4 tunnels between IPv6 islands, using proxying and translation (NAT-PT) to translate IPv6 packets into IPv4 packets, and enabling dual-stack routing. These methods allow for a smooth transition from IPv4 to IPv6 by establishing connectivity between IPv6 islands using IPv4 tunnels, translating IPv6 packets into IPv4 packets to ensure compatibility, and enabling dual-stack routing to support both IPv4 and IPv6 protocols simultaneously.

Explanation

The three approaches that can be used while migrating from an IPv4 addressing scheme to an IPv6 scheme are configuring IPv4 tunnels between IPv6 islands, using proxying and translation (NAT-PT) to translate IPv6 packets into IPv4 packets, and enabling dual-stack routing. These methods allow for a smooth transition from IPv4 to IPv6 by establishing connectivity between IPv6 islands using IPv4 tunnels, translating IPv6 packets into IPv4 packets to ensure compatibility, and enabling dual-stack routing to support both IPv4 and IPv6 protocols simultaneously.

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