Tools

IP addressing

• Binary & Hex Trainer 100 conversion drills: 8-bit binary, decimal and hex, whole addresses octet by octet, and the powers of two behind subnetting.
• IPv6 Practice 120 IPv6 drills: compressing and expanding addresses, identifying address types, EUI-64, solicited-node multicast and prefix extraction.
• Subnetting Practice 210 CCNA-style subnetting drills: first and last valid hosts, broadcast addresses, host ranges, subnet counts, mask conversions, wildcard masks, ACL ranges, subnet design and route summarization.

Ports & protocols

• Ports & Protocols 53 drills on well-known port numbers, TCP versus UDP, and IP protocol numbers.

Cisco IOS

• Cisco CLI Practice 197 IOS drills across the CCNA blueprint: navigation, VLANs and trunking, EtherChannel, spanning tree, OSPF, static routes, NAT, DHCP, NTP, SSH, ACLs and Layer 2 security. Type the command for the task or name the mode from the prompt; IOS-style abbreviations are accepted.