CompTIA Quizzes

Diagram subnetting

Visual drills (original topologies) — exam-style practice, not copied from third-party sites.

• Diagram D01 – Valid interface IP L3+30 Pts per correct part

  Which IP fits the hidden LAN on the diagram?

• Diagram D03 – More host bits (A/B) L2+20 Pts per correct part

  Two VLANs on diagram: which has more host bits?

• Diagram D04 – Router on a stick L3+30 Pts per correct part

  Pick the subinterface config for new VLANs (A–D).

• Diagram D06 – Mask in VLAN design L2+20 Pts per correct part

  What subnet mask is used for both VLANs shown?

• Diagram D07 – Route → interface L3+30 Pts per correct part

  Route table + diagram: which interface reaches the destination?

• Diagram D08 – Hosts in block (diagram) L2+20 Pts per correct part

  How many usable hosts in the highlighted subnet?

Route summarization & wildcard

Multiple subnets behind a router — wildcard mask or summary CIDR (ACL / OSPF).

• RS RS01 – Wildcard (multiple subnets) L3+30 Pts per correct part

  Wildcard mask covering several subnets behind a router.

ACL — Access lists (grouped wildcard)

Standard and extended ACLs: permit/deny, network + wildcard for subnets behind a router.

• ACL ACL01 – Wildcard (grouped) L3+30 Pts per correct part

  Wildcard covering all subnets behind router A.

• ACL ACL02 – Standard ACL permit L3+30 Pts per correct part

  One IOS line: permit all diagram subnets with network + wildcard.

• ACL ACL04 – Extended ACL L3+30 Pts per correct part

  Pick the correct extended ACL line.

IPv4 Quizzes

• 01 – IPv4 subnetting L3+30 Pts per correct part

  4 equal subnets (exam style): /22–/28, RFC 1918.

• 02 – Count hosts L2+20 Pts per correct part

  Usable hosts.

• 03 – Network range L3+30 Pts per correct part

  Network, first/last host.

• 04 – CIDR → mask L2+20 Pts per correct part

  Decimal subnet mask.

• 05 – Mask → prefix L2+20 Pts per correct part

  Find prefix length.

• 06 – Which subnet? L3+30 Pts per correct part

  Network for host.

• 07 – VLSM (4 subnets) L3+30 Pts per correct part

  Exam-style VLSM: octet boxes + prefix per subnet (/28, mixed host needs).

• 08 – Private addresses L2+20 Pts per correct part

  Pick private address.

• 09 – Binary octet L2+20 Pts per correct part

  8 bits → decimal.

• 10 – Summarization L3+30 Pts per correct part

  Summarize four /24s.

• 11 – Valid host? L2+20 Pts per correct part

  Host in /28?

• 12 – Wildcard mask L3+30 Pts per correct part

  Inverted mask.

• G13 – Host range L3+30 Pts per correct part

  First and last usable host for a host IP or network.

• G15 – Mask for subnets & hosts L3+30 Pts per correct part

  Find prefix for X subnets with Y hosts each (e.g. 710 subnets, 50 hosts).

• G24 – Subnets from topology L2+20 Pts per correct part

  How many subnets are needed for this topology? (diagram)

IPv6 multicast

ff00::/8, ff02::1/2, solicited-node (NDP), multicast types.

• MC M01 – Multicast? L2+20 Pts per correct part

  Is this an IPv6 multicast address (ff00::/8)?

IPv6 Quizzes

• 01 – Subnetting (4 subnets) L3+30 Pts per correct part

  Split into 4 equal subnets.

• 02 – Subnet count L2+20 Pts per correct part

  How many /64 networks?

• 03 – Network ID? L2+20 Pts per correct part

  Is ::0 the network ID?

• 04 – Notation L2+20 Pts per correct part

  Full notation.

• 05 – Address types L2+20 Pts per correct part

  Pick link-local.

• 06 – EUI-64 L3+30 Pts per correct part

  MAC → link-local.

• 07 – SLAAC/DHCPv6 L2+20 Pts per correct part

  Read RA flags.

• 08 – ICMPv6/NDP L2+20 Pts per correct part

  Message type (NS).

• 09 – Dual stack L2+20 Pts per correct part

  Dual-stack scenario.

• 10 – Aggregation L3+30 Pts per correct part

  Summarize three /64s.

• 11 – Best practice L1+10 Pts per correct part

  Typical LAN prefix.

• 12 – Wireshark L2+20 Pts per correct part

  Source IPv6 from trace.

• 13 – Same subnet? L2+20 Pts per correct part

  Two IPv6 addresses — same subnet? (yes/no), practice style.