Practice Test Geeks(ICND1) Interconnecting Cisco Networking Devices Part 1 Practice Test
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IPv4 and IPv6 Flashcards

7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 IPv4 and IPv6 flashcards as text

  1. Which command verifies IPv6 connectivity to a remote host from a Cisco router?

    Answer: ping ipv6 2001:DB8::1

    The 'ping ipv6' command (or 'ping 2001:DB8::1') tests end-to-end IPv6 reachability from a Cisco device.

  2. What is the total number of bits in an IPv6 address?

    Answer: 128

    IPv6 addresses are 128 bits long, written as eight groups of four hexadecimal digits separated by colons.

  3. Which subnet contains the host address 192.168.1.200 with a mask of 255.255.255.224 (/27)?

    Answer: 192.168.1.192/27

    A /27 uses blocks of 32: .0, .32, .64, .96, .128, .160, .192; address .200 falls in the .192 block (range .192–.223).

  4. What is the IPv6 loopback address?

    Answer: ::1

    ::1 is the IPv6 loopback address (equivalent to 127.0.0.1 in IPv4), used to test the local IPv6 stack.

  5. How many subnets are created when a Class C network is subnetted with a /27 mask?

    Answer: 8

    A Class C uses a /24 default; borrowing 3 additional bits for subnetting gives 2^3 = 8 subnets.

  6. Which ICMPv6 message type is used by a host to request the link-layer address of another IPv6 node (equivalent to ARP request)?

    Answer: Neighbor Solicitation

    Neighbor Solicitation (ICMPv6 type 135) is sent to the solicited-node multicast address to resolve an IPv6 address to a MAC address.

  7. What range of IPv4 addresses is reserved for APIPA (Automatic Private IP Addressing) when DHCP is unavailable?

    Answer: 169.254.0.1 – 169.254.255.254

    Windows hosts auto-assign a 169.254.0.0/16 address (APIPA) when they cannot reach a DHCP server.