Chapter 12

Question 1

Which of the following is a valid IPv6 address?
A) 2001:bead:beaf::1
B) 2001:30f5::3d62::04ffe
C) 192.168.1.4:ff45:129g:48fd:1
D) 2001.0470.b33e.23f4.27de.d34a.aed2.1827

Answer 1

A) 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 used?
A) True
B) False

Answer 2

B) 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?
A) A
B) SIX
C) AAAA
D) NSSIX

Answer 3

C) AAAA - The DNS system uses AAAA for IPv6 records.

Question 4

Is NAT needed with IPv6?
A) No, because NAT has been replaced with a new version called NAT 6.
B) No, the address space is so large that rationing routable address is unnecessary.
C) Yes, because it is the only way to protect against hackers.
D) Yes, because of the limited nature of IPv6 address.

Answer 4

B) 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) A link-local address
B) A multicast address
C) A global unicast address
D) The IPV6 internet is currently unreachable.

Answer 5

C) A client needs a global unicast address to access teh IPv6 internet.

Question 6

What is the /16 prefix for all 6to4 address?
A) 2001
B) 2003
C) 2002
D) 2021

Answer 6

C) 2002 - The /16 prefix designated by IANA for all 6to4 address is 2002.

Question 7

Which of the following operating systems have Teredo built in? (Select Two)
A) WIndows7
B) macOS
C) Windows 10
D) Linux

Answer 7

A and C. Teredo is built into Windows.

Question 8

What service do tunnel brokers provide?
A) A way for users to jup the gap between their computers and the IPv6 internet routers.
B) The Provide no useful service
C) Access to IPv6 DNS Records
D) A second connection for multihoming.

Answer 8

A) The unnel 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?
A) 2001:480:b6f3:1
B) 2001:480:b6f3
C) 2001:480:b6f3:1:0000::1
D) 2001:480:b6f3:1:0000:0000:0000:1

Answer 9

B) The /48 prefix consists of only the first three groups of the address.
2001:480:b6f3

Question 10

Which of the following is the valid reduced version of the address 2001:0489:000f:0000:0000:1f00:0000:000d?
A) 2001:489:f::1f:0:d
B) 2001:489:f::1f00::d
C) 2001:0489:000f::1f00:0000:000d
D) 2001:489:f::1f00:0:d

Answer 10

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