IPv6

Question 1

Which of the following is a valid IPv6 address?

2001: bead:beef::1
2001: 30f5::3d62::04ffe
192. 168.1.4:ff45:129g:48fd:1

Answer 1

2001:bead:beef::1

B has two sets of double colons. C is using IPv4 numbers. D is using periods instead of colons

Question 2

DHCP is required to receive an IPv6 address automatically.

True

False

Answer 2

False

Router advertisements allow clients to receive a valid IPv6 address without a DHCP server

Question 3

What kind of DNS records do IPv6 addresses use?

SIX

AAAA

NSSIX

Answer 3

AAAA

The DNS system uses AAAA for IPv6 records

Question 4

Is NAT needed with IPv6?

No, because NAT has been replaced with a new version called NAT6.

No, the address space is so large that rationing routable addresses is unnecessary.

Yes, because it is the only way to protect against hackers.

Answer 4

No, the address space is so large that rationing routable addresses is unnecessary.

NAT is no longer needed because of the massive size of the IPv6 address space

Question 5

What does a client need to access IPv6 content on the Internet?

A link-local address.

A multicast address.

A global unicast address.

Answer 5

A global unicast address.

A client needs a global unicast address to access the IPv6 Internet

Question 6

What is the /16 prefix for all 6to4 address?

2001

2003

2002

Answer 6

2002

The /16 prefix designated by IANA for all 6to4 addresses is 2002

Question 7

Which of the following operating systems have Teredo built in? (Select two).

Windows 7

macOS

Windows 10

Linux

Answer 7

Windows 7

Windows 10

Teredo is built into Windows

Question 8

What service do tunnel brokers provide?

A way for users to jump the gap between their computers and the IPv6 Internet routers.

They provide no useful service.

Access to IPv6 DNS records.

Answer 8

A way for users to jump the gap between their computers and the IPv6 Internet routers.

Tunnel brokers provide a way to jump the gap between users’ computers and the IPv6 Internet

Question 9

What is the /48 prefix of the address 2001:0480:b6f3:0001::0001?

2001: 480:b6f3:1
2001: 480:b6f3
2001: 480:b6f3:1:0000::1

Answer 9

2001:480:b6f3

The /48 prefix consists of only the first three groups of the address

Question 10

Which of the following is the valid reduced version of the address 2001:0489:000f:0000:0000:1f00:0000:000d?

2001: 489:f::1f:0:d
2001: 489:f::1f00::d
2001: 489:f::1f00:0:d

Answer 10

2001:489:f::1f00:0:d

Leading zeroes can be dropped and only one group of contiguous zeroes can be represented by a double colon