http://ipv6.he.net/certification/

Covers technical knowledge of DNS and general IPv6 topics.

1. On Redhat, CentOS, and Fedora Core systems that don’t accept ::/0 as the IPv6 default route, which of the following should you use instead?

  • ::1/128
  • fe80::/10
  • 0.0.0.0
  • 2000::/3 ✅

2. When configuring forward DNS entries for use with an IPv6 address, what record type do you use?

  • AAAA ✅
  • PTR
  • mysql
  • A

3. When configuring reverse DNS with BIND for addresses in the IPv6 allocation -2001:A:B:C::/64, what is the correct format for the zone?

  • 2.0.0.1.0.0.0.A.0.0.0.B.0.0.0.C ✅
  • C.0.0.0.B.0.0.0.A.0.0.0.1.0.0.2.ip6.arpa
  • 2.0.0.1.0.0.0.A.0.0.0.B.0.0.0.C.ip6.arpa
  • 2.0.0.1.A.B.C
  • C.B.A.1.0.0.2.ip6.arpa

4.What is the IPv6 default route?

  • ::/0 ✅
  • 0.0.0.0
  • 127.0.0.1
  • ::1/128

5. What is the IPv6 localhost address?

  • ::/0
  • ::1/128 ✅
  • 127.0.0.1
  • 0.0.0.0
  • ::1 ✅
  • ::
  • fe80::20c:dbff:fefb:232b
  • 3ffe:3200::/32

7. Which of the following URLs specifies a literal IPv6 address correctly?

  • ipv6://2001:470:0:64::2
  • http://[2001:470:0:64::2] ✅
  • http:[2001:470:0:64::2]
  • http://2001:470:0:64::2

8. Which of the following URLs specifies a literal IPv6 address and port number correctly?

  • https://2001:0db8:85a3:08d3:1319:8a2e:0370:7344:443
  • https:[2001:0db8:85a3:08d3:1319:8a2e:0370:7344]:443
  • https://[2001:0db8:85a3:08d3:1319:8a2e:0370:7344].443
  • https://[2001:0db8:85a3:08d3:1319:8a2e:0370:7344]:443 ✅

9. If you run native IPv4 and IPv6 at the same time this is called:

  • 6in4
  • 6and4
  • NAT-PT
  • Dual stack ✅

10. How do you use the dig command to get the IPv6 address record for domain he.net?

  • dig he.net 6
  • dig he.net A
  • dig he.net AAAA ✅

11. How do you use the dig command to get the PTR record for the IPv6 address 2001:470:0:76::2?

  • dig 2001:470:0:76::2
  • dig 2001:470:0:76::2 PTR
  • dig -x 2001:470:0:76::2 ✅