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

1. What command shows IPv6 addresses configured on ethernet interfaces under UNIX (Linux, FreeBSD, etc.)?

  • ip -a
  • ifconfig /all
  • ip link show
  • ifconfig ✅
  • ipconfig

2. What command shows IPv6 addresses configured on ethernet interfaces under Microsoft Windows?

  • netsh interface show
  • ifconfig /all
  • netsh
  • ifconfig
  • ipconfig ✅

3. Under FreeBSD, what does the generic tunneling interface start with?

  • png
  • gif ✅
  • fxp
  • jif

4. Under Linux, what kernel module needs to be loaded to support IPv6 networking?

  • ip6tables
  • eepro1000
  • ipv6 ✅
  • sit

5. Are routers allowed to fragment IPv6 packets?

  • Yes
  • No ✅

6. How many bytes are in an IPv6 address?

  • 1
  • 128
  • 16 ✅
  • 8

7. How many /48 subnets are available in a /32 prefix?

  • 256
  • 6
  • 128
  • 65536 ✅

8. Which protocol is used for manually configured tunnels?

  • 6to4
  • 6in4 X
  • Teredo

9. Which of the following is the IPv6 documentation prefix?

  • ::/8
  • 2002::/16
  • 2001:db8::/32 ✅
  • fe80::/10
  • 2002::/16
  • fe80::/10 ✅
  • ::/8
  • ff00::/8

11. Which of the following is the IPv6 multicast prefix?

  • ::/8
  • ff00::/8 ✅
  • fe80::/10
  • 2002::/16

12. Which of the following is the IPv6 ULA (unique local addresses) prefix?

  • fe80::/10
  • fc00::/7 ✅
  • 2002::/16
  • ff00::/8

13. Which of the following is a subnet of 2001:db8::/32?

  • fe80::20c:dbff:fefb:232b
  • 2001:db8:7fa5::/48 ✅
  • 2001:db9::/32
  • 2001:db8::/16

14. On Linux, how would you traceroute to the IPv6 address of he.net?

  • owamp he.net
  • traceroute6 he.net ✅
  • smokeping he.net
  • tracert6 he.net

15. On Windows Vista, how would you traceroute to the IPv6 address of he.net?

  • smokeping he.net
  • traceroute6 he.net
  • owamp he.net
  • tracert he.net ✅

16. On Linux, what is the IPv6 ping command?

  • pong
  • pingit
  • plonk!
  • ping6 ✅

17. Which command forces the UNIX command ssh to use IPv6 to connect to example.com (useful for domains with both A and AAAA records)?

  • ssh -4 example.com
  • ssh -6 example.com ✅
  • putty example.com
  • ssh6 example.com

18. You would force the UNIX command ssh to use IPv4 (useful if it had both A and AAAA records) to connect to example.com using which command?

  • ssh4 example.com
  • ssh -6 example.com
  • ssh -4 example.com ✅
  • putty example.com

19. Which command forces the UNIX command wget to use IPv6 to make a HTTP GET request to he.net (useful for domains with both A and AAAA records)?

  • http he.net
  • wget -4 he.net
  • wget -6 he.net ✅
  • wget6 he.net

20. Which command forces the UNIX command wget to use IPv4 to make a HTTP GET request to he.net (useful for domains with both A and AAAA records)?

  • wget -4 he.net ✅
  • http he.net
  • wget -6 he.net
  • wget4 he.net

21. Which command forces the UNIX command mtr to use IPv6 to traceroute to he.net (useful for domains with both A and AAAA records)?

  • mtr6
  • mtr -4 he.net
  • mtr -6 he.net ✅
  • ping6 he.net

22. Which command forces the UNIX command mtr to use IPv4 to traceroute to he.net (useful for domains with both A and AAAA records)?

  • mtr -4 he.net ✅
  • mtr -6 he.net
  • ping4 he.net
  • mtr4 he.net