Jun 182011
 

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

Covers technical knowledge of ping and traceroute commands on Linux and Windows.

1. What command do you use to ping an IPv6 address on Free Open Source UNIX platforms such as Linux, FreeBSD, etc?

<em id="__mceDel"> ping -A inet6
ping --ipv6
ping6 X
pingsix</em>

2. What command do you use to traceroute to an IPv6 address on Free Open Source UNIX platforms such as Linux, FreeBSD, etc?
traceroute -A inet6
traceroute --inet6
traceroute6 X
traceroutesix

3. What command do you use to ping an IPv6 address on a Microsoft Windows platform?
pingsix
ping --inet6
ping X
ping --ipv6

4. What command do you use to traceroute to an IPv6 address on a Microsoft Windows platform?
traceroute
traceroute6
tracert --ipv6
tracert X

5. IPv6 addresses are written using what number base?
hexadecimal (base 16) X
octal (base 8)
binary (base 2)
decimal (base 10)

6. Hexadecimal digits are represented by:
0 to 9
0 to 9 and A to F X
0 to 7
0 and 1
Jun 182011
 

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

1. How many bits are in an IPv6 address?
128 X
64
32
48

2. Which of the following choices is a valid IPv6 address?
2001:0DB8:HE:6939::1
ipv6.example.com
192.168.0.1
2001:0DB8::0::FF2e:1
2001:0DB8:0:FF2E::1 X

3. How many /64 subnets are available in a /48 prefix?
256
340,282,366,920,938,463,463,374,607,431,768,211,456
18,446,744,073,709,551,616
65536 X

4. How many available IPv6 addresses are there in a /64 allocation?
18,446,744,073,709,551,616 X
65536
4,294,967,296
2^128

5. What operating systems currently support IPv6?
Linux
BSD
MacOSX
Vista/Windows 2008
All of the these support IPv6 X
May 162011
 

 

CIDR  Netmask # Networks # Hosts
  /1 128.0.0.0 128 A 2,147,483,392
  /2 192.0.0.0 64 A 1,073,741,696
  /3 224.0.0.0 32 A 536,870,848
  /4 240.0.0.0 16 A 268,435,424
  /5 248.0.0.0 8 A 134,217,712
  /6 252.0.0.0 4 A 67,108,856
  /7 254.0.0.0 2 A 33,554,428
  /8 255.0.0.0 1 A   16,777,214  
  /9 255.128.0.0 128 B 8,388,352
  /10 255.192.0.0 64 B 4,194,176
  /11 255.224.0.0 32 B 2,097,088
  /12 255.240.0.0 16 B 1,048,544
  /13 255.248.0.0 8 B 524,272
  /14 255.252.0.0 4 B 262,136
  /15 255.254.0.0 2 B 131,068
  /16 255.255.0.0 1 B   65,024  
  /17 255.255.128.0 128 C 32,512
  /18 255.255.192.0 64 C 16,256
  /19 255.255.224.0 32 C 8,128
  /20 255.255.240.0 16 C 4,064
  /21 255.255.248.0 8 C 2,032
  /22 255.255.252.0 4 C 1,016
  /23 255.255.254.0 2 C 508
  /24 255.255.255.0 1 C   254  
  /25 255.255.255.128 2 subnets 124
  /26 255.255.255.192 4 subnets 62
  /27 255.255.255.224 8 subnets 30
  /28 255.255.255.240 16 subnets 14
  /29 255.255.255.248 32 subnets 6
  /30 255.255.255.252 64 subnets 2
  /31 255.255.255.254 none none
  /32 255.255.255.255 1/256 C 1 (broadcast)
May 102011
 
Route Source Default Distance Values
Connected interface 0
Static route 1
Enhanced Interior Gateway Routing Protocol (EIGRP) summary route 5
External Border Gateway Protocol (BGP) 20
Internal EIGRP 90
IGRP 100
OSPF 110
Intermediate System-to-Intermediate System (IS-IS) 115
Routing Information Protocol (RIP) 120
Exterior Gateway Protocol (EGP) 140
On Demand Routing (ODR) 160
External EIGRP 170
Internal BGP 200
Unknown* 255

 

Apr 282011
 
#net bits (CIDR) netmask # hosts (hb^2) “size” Cisco ACL wildcard mask hex netmask
/0 0.0.0.0 4,294,967,296 The Internet:-) 255.255.255.255 00.00.00.00
/1 128.0.0.0 2,147,483,648 128A 127.255.255.255 80.00.00.00
/2 192.0.0.0 1,073,741,824 64A 63.255.255.255 C0.00.00.00
/3 224.0.0.0 536,870,912 32A 31.255.255.255 F0.00.00.00
/4 240.0.0.0 268,435,456 16A 15.255.255.255 F8.00.00.00
/5 248.0.0.0 134,217,728 8A 7.255.255.255 FC.00.00.00
/6 252.0.0.0 67,108,864 4A 3.255.255.255 FE.00.00.00
/7 254.0.0.0 33,554,432 2A 1.255.255.255 FF.00.00.00
/8 255.0.0.0 16,777,216 1A 0.255.255.255 FF.80.00.00
/9 255.128.0.0 8,388,608 128B 0.127.255.255 FF.C0.00.00
/10 255.192.0.0 4,194,304 64B 0.63.255.255 FF.E0.00.00
/11 255.224.0.0 2,097,152 32B 0.31.255.255 FF.F0.00.00
/12 255.240.0.0 1,048,576 16B 0.15.255.255 FF.F8.00.00
/13 255.248.0.0 524,288 8B 0.7.255.255 FF.FC.00.00
/14 255.252.0.0 262,144 4B 0.3.255.255 FF.FE.00.00
/15 255.254.0.0 131,072 2B 0.1.255.255 FF.FF.00.00
/16 255.255.0.0 65,536 1B 0.0.255.255 FF.FF.80.00
/17 255.255.128.0 32,768 128C 0.0.127.255 FF.FF.C0.00
/18 255.255.192.0 16,384 64C 0.0.63.255 FF.FF.E0.00
/19 255.255.224.0 8192 32C 0.0.31.255 FF.FF.F0.00
/20 255.255.240.0 4096 16C 0.0.15.255 FF.FF.F8.00
/21 255.255.248.0 2048 8C 0.0.7.255 FF.FF.FC.00
/22 255.255.252.0 1024 4C 0.0.3.255 FF.FF.FE.00
/23 255.255.254.0 512 2C 0.0.1.255 FF.FF.FF.00
/24 255.255.255.0 256 1C 0.0.0.255 FF.FF.FF.80
/25 255.255.255.128 128 1/2C 0.0.0.127 FF.FF.FF.C0
/26 255.255.255.192 64 1/4C 0.0.0.63 FF.FF.FF.E0
/27 255.255.255.224 32 1/8C 0.0.0.31 FF.FF.FF.F0
/28 255.255.255.240 16 1/16C 0.0.0.15 FF.FF.FF.F8
/29 255.255.255.248 8 1/32C 0.0.0.7 FF.FF.FF.FC
/30 255.255.255.252 4 1/64C 0.0.0.3 FF.FF.FF.FE
/31 255.255.255.254 PtoP links only 1/128C FF.FF.FF.FF
/32 255.255.255.255 This is a single host route(usehostnotation)
Sources:
RFC 1519 (1993) — Classless Inter-Domain Routing (CIDR)
RFC 1878 (1995) — Variable Length Subnet Table For IPv4