Question 1

IPv4/IPv6-capable routers that are linked in an IPv4 routing infrastructure can tunnel IPv6 packets between each other by creating which of the following

Accepted Answer

IPv6 packets can be tunneled through an IPv4 network by creating an end-to-end path between IPv4/IPv6-capable routers. This allows for the encapsulation of IPv6 packets within IPv4 packets, enabling IPv6 connectivity across an IPv4 infrastructure.

Question 2

Which of the following is used to connect dual-stack IPv4/IPv6 devices across IPv4 network infrastructures?

Accepted Answer

ISATAP (Intra-Site Automatic Tunnel Addressing Protocol) is used to connect IPv6 devices over an IPv4 network, effectively allowing IPv6 packets to be transmitted over IPv4 infrastructures by encapsulating IPv6 packets within IPv4 packets.

Question 3

Which of the following addresses do ISATAP nodes use on their tunneling interface as the next-hop address for the link-local address of the router?

Accepted Answer

ISATAP nodes use the IPv6 address format ::/0 on their tunneling interface as the next-hop address for the link-local address of the router. This format is part of the mechanism that allows ISATAP to encapsulate IPv6 packets within IPv4 packets for transmission over an IPv4 network.

Question 4

With IPv6-over-IPv4, when the IPv4 header is created, what value is the protocol field value set at to indicate that it is an encapsulated IPv6 packet?

Accepted Answer

The protocol field value is set at 41 in the IPv4 header to indicate that it is an encapsulated IPv6 packet. This is defined in various Internet standards and is used to signify that the payload of the IPv4 packet is an IPv6 packet.

Question 5

SIIT defines a type of IPv6 address that can be formatted as ::ffff:0:0:0/96 or ::ffff:0:a.b.c.d., in which
Aزb.c.d is the IPv4 address notation.What is this address called?

Accepted Answer

This address is called an IPv4 translated address. It is part of the SIIT (Stateless IP/ICMP Translation) mechanism, which allows for the representation of an IPv4 address within an IPv6 address format, facilitating the transition from IPv4 to IPv6.

Question 6

A computer possessing which type of architecture maintains separate stacks at both the Network and Transport layers?

Accepted Answer

A computer with a dual-stack architecture maintains separate stacks for both IPv4 and IPv6 at the Network layer, allowing it to operate in both addressing schemes. This concept can also extend to the Transport layer, supporting different protocols like TCP and UDP simultaneously.

Question 7

The transition from IPv4 to IPv6 requires that multiple stages occur in the move from a pure IPv4 environment to one that exclusively uses IPv6.

Accepted Answer

The transition from IPv4 to IPv6 involves multiple stages, including dual-stack environments, tunneling, and translation mechanisms, because it's not feasible to switch the entire internet from IPv4 to IPv6 instantly. This phased approach allows for gradual migration and compatibility between the two protocols.

Question 8

What is the first 16 bits of an IPv6 6to4 address?

Accepted Answer

The first 16 bits of an IPv6 6to4 address are 2002, indicating that the address is part of the 6to4 tunneling protocol used for transitioning from IPv4 to IPv6.

Question 9

What type of tunneling requires that an administrator configure the end points of a tunnel?

Accepted Answer

Configured tunneling requires an administrator to manually set up the end points of the tunnel, specifying the tunnel source and destination.

Question 10

A network node possessing which type of architecture has both IPv4 and IPv6 protocols operating in a single Transport layer implementation?

Accepted Answer

The answer of A network node possessing which type of...

Question 11

Both dual-IP-layer and dual-stack architecture require IPv6-over-IPv4 tunneling to be effective as a transition mechanism.

Accepted Answer

Dual-stack architecture does not require IPv6-over-IPv4 tunneling to be effective as a transition mechanism; it involves running IPv4 and IPv6 simultaneously on the same devices, allowing for direct communication over both protocols without the need for tunneling.

Question 12

The nested model could be used for an IPv6 site that requires one or more "islands" of IPv4 subnets.

Accepted Answer

The nested model allows for IPv6 deployment while still accommodating IPv4 subnets, effectively creating "islands" of IPv4 within an otherwise IPv6 network. This approach facilitates a smoother transition from IPv4 to IPv6 by ensuring compatibility and connectivity for devices and networks still operating on IPv4.

Question 13

Which type of addresses are composed of a valid 64-bit unicast address prefix and an IPv4 interface identifier?

Accepted Answer

ISATAP addresses are composed of a 64-bit unicast address prefix and an IPv4 interface identifier, allowing IPv6 packets to be transmitted over an IPv4 infrastructure.

Question 14

Which node is responsible for reassembling any fragmented packets, removing the IPv4 header encapsulation, and processing the IPv6 packet?

Accepted Answer

The decapsulator is responsible for reassembling any fragmented packets, removing the IPv4 header encapsulation, and processing the IPv6 packet, especially in scenarios involving tunneling where IPv6 packets are encapsulated within IPv4 packets for transmission across an IPv4 network.

Question 15

Which of the following is a specialized 6to4 device that acts as an IPv6/IPv4 router?

Accepted Answer

A 6to4 relay acts as a specialized device that facilitates communication between IPv6 and IPv4 networks by routing traffic between them.

Question 16

What network model can represent a number of hybrid configurations, but it assumes that a site has a variety of different subnets, based on IP version implementation?

Accepted Answer

The answer of What network model can represent a number...

Question 17

By default, application services such as DNS, DHCP, and FTP are compatible with the IPv6 address space.

Accepted Answer

The answer of By default, application services such as DNS,...

Question 18

The process of an ISATAP host communicating with an IPv6 node on an IPv6-capable subnet involves two different connections: a connection between the ISATAP router and the IPv6-capable subnet and which of the following?

Accepted Answer

The process involves a host-to-router tunnel from the ISATAP node to the ISATAP router, allowing the ISATAP host to communicate with the IPv6 network through encapsulation of IPv6 packets within IPv4 packets. This enables the ISATAP host to connect to the IPv6-capable subnet via the ISATAP router.

Question 19

Windows Server 2012, Windows Server 2016, Windows 7, and Windows 10 support a TCP/IP implementation that integrates IPv4 and IPv6 in a dual-stack configuration that Microsoft calls which of the following?

Accepted Answer

Microsoft refers to the TCP/IP implementation that supports both IPv4 and IPv6 in a dual-stack configuration as the "Next Generation TCP/IP stack." This allows for the coexistence and transition between IPv4 and IPv6.

Question 20

IPv6 and IPv4 will probably exist side by side for many years.
Indicate the answer choice that best completes the statement or answers the question.

Accepted Answer

IPv6 and IPv4 are designed to coexist through various transition mechanisms, and due to the vast number of devices and systems using IPv4, a complete switch to IPv6 will take many years.

Quiz 10: Transitioning From Ipv4 to Ipv6: Interoperation