IPv6 interview questions

24 real IPv6 questions from the Networking bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.

1. What is IPv6 global unicast 2000::/3?

Junior
  1. A.the publicly routable IPv6 address range assigned to hosts on the Internet
  2. B.a multicast group derived from an address that NDP uses instead of broadcast for resolution
  3. C.the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
  4. D.the IPv6 address that refers to the local host itself
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3. Which statement is correct?

Junior
  1. A.IPv6 global unicast 2000::/3 — generating random, rotating interface identifiers to prevent tracking of a host by address
  2. B.IPv6 global unicast 2000::/3 — the IPv6 address that refers to the local host itself
  3. C.IPv6 global unicast 2000::/3 — the publicly routable IPv6 address range assigned to hosts on the Internet
  4. D.IPv6 global unicast 2000::/3 — the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
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4. What is IPv6 loopback ::1?

Junior
  1. A.an ICMPv6 message a router multicasts to announce its prefix and act as default gateway
  2. B.the IPv6 address that refers to the local host itself
  3. C.generating random, rotating interface identifiers to prevent tracking of a host by address
  4. D.deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit
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6. Which statement is correct?

Junior
  1. A.IPv6 loopback ::1 — generating random, rotating interface identifiers to prevent tracking of a host by address
  2. B.IPv6 loopback ::1 — a multicast group derived from an address that NDP uses instead of broadcast for resolution
  3. C.IPv6 loopback ::1 — deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit
  4. D.IPv6 loopback ::1 — the IPv6 address that refers to the local host itself
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7. What is IPv6 zero compression?

Junior
  1. A.a multicast group derived from an address that NDP uses instead of broadcast for resolution
  2. B.the IPv6 address that refers to the local host itself
  3. C.collapsing one run of consecutive all-zero groups into a double colon to shorten an address
  4. D.generating random, rotating interface identifiers to prevent tracking of a host by address
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9. Which statement is correct?

Junior
  1. A.IPv6 zero compression — an ICMPv6 message a router multicasts to announce its prefix and act as default gateway
  2. B.IPv6 zero compression — the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
  3. C.IPv6 zero compression — generating random, rotating interface identifiers to prevent tracking of a host by address
  4. D.IPv6 zero compression — collapsing one run of consecutive all-zero groups into a double colon to shorten an address
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10. What is Neighbor Discovery Protocol (NDP)?

Mid
  1. A.the publicly routable IPv6 address range assigned to hosts on the Internet
  2. B.the IPv6 address that refers to the local host itself
  3. C.an ICMPv6 message a router multicasts to announce its prefix and act as default gateway
  4. D.the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
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11. Which term means: "the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery"?

Mid
  1. A.IPv6 solicited-node multicast
  2. B.IPv6 EUI-64
  3. C.IPv6 loopback ::1
  4. D.Neighbor Discovery Protocol (NDP)
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12. Which statement is correct?

Mid
  1. A.Neighbor Discovery Protocol (NDP) — collapsing one run of consecutive all-zero groups into a double colon to shorten an address
  2. B.Neighbor Discovery Protocol (NDP) — deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit
  3. C.Neighbor Discovery Protocol (NDP) — the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
  4. D.Neighbor Discovery Protocol (NDP) — the publicly routable IPv6 address range assigned to hosts on the Internet
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13. What is Router Advertisement (RA)?

Mid
  1. A.a multicast group derived from an address that NDP uses instead of broadcast for resolution
  2. B.an ICMPv6 message a router multicasts to announce its prefix and act as default gateway
  3. C.collapsing one run of consecutive all-zero groups into a double colon to shorten an address
  4. D.the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
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14. Which term means: "an ICMPv6 message a router multicasts to announce its prefix and act as default gateway"?

Mid
  1. A.Router Advertisement (RA)
  2. B.IPv6 global unicast 2000::/3
  3. C.IPv6 privacy extensions (RFC 8981)
  4. D.IPv6 zero compression
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15. Which statement is correct?

Mid
  1. A.Router Advertisement (RA) — a multicast group derived from an address that NDP uses instead of broadcast for resolution
  2. B.Router Advertisement (RA) — the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
  3. C.Router Advertisement (RA) — an ICMPv6 message a router multicasts to announce its prefix and act as default gateway
  4. D.Router Advertisement (RA) — deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit
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16. What is IPv6 solicited-node multicast?

Mid
  1. A.the IPv6 address that refers to the local host itself
  2. B.collapsing one run of consecutive all-zero groups into a double colon to shorten an address
  3. C.a multicast group derived from an address that NDP uses instead of broadcast for resolution
  4. D.the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
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17. Which term means: "a multicast group derived from an address that NDP uses instead of broadcast for resolution"?

Mid
  1. A.IPv6 EUI-64
  2. B.IPv6 loopback ::1
  3. C.IPv6 privacy extensions (RFC 8981)
  4. D.IPv6 solicited-node multicast
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18. Which statement is correct?

Mid
  1. A.IPv6 solicited-node multicast — collapsing one run of consecutive all-zero groups into a double colon to shorten an address
  2. B.IPv6 solicited-node multicast — the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
  3. C.IPv6 solicited-node multicast — the publicly routable IPv6 address range assigned to hosts on the Internet
  4. D.IPv6 solicited-node multicast — a multicast group derived from an address that NDP uses instead of broadcast for resolution
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19. What is IPv6 EUI-64?

Senior
  1. A.the IPv6 address that refers to the local host itself
  2. B.deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit
  3. C.an ICMPv6 message a router multicasts to announce its prefix and act as default gateway
  4. D.a multicast group derived from an address that NDP uses instead of broadcast for resolution
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20. Which term means: "deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit"?

Senior
  1. A.IPv6 zero compression
  2. B.Router Advertisement (RA)
  3. C.IPv6 EUI-64
  4. D.IPv6 global unicast 2000::/3
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21. Which statement is correct?

Senior
  1. A.IPv6 EUI-64 — a multicast group derived from an address that NDP uses instead of broadcast for resolution
  2. B.IPv6 EUI-64 — generating random, rotating interface identifiers to prevent tracking of a host by address
  3. C.IPv6 EUI-64 — deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit
  4. D.IPv6 EUI-64 — the publicly routable IPv6 address range assigned to hosts on the Internet
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22. What is IPv6 privacy extensions (RFC 8981)?

Senior
  1. A.the IPv6 address that refers to the local host itself
  2. B.the ICMPv6 protocol that replaces ARP and handles address resolution and router discovery
  3. C.a multicast group derived from an address that NDP uses instead of broadcast for resolution
  4. D.generating random, rotating interface identifiers to prevent tracking of a host by address
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23. Which term means: "generating random, rotating interface identifiers to prevent tracking of a host by address"?

Senior
  1. A.IPv6 privacy extensions (RFC 8981)
  2. B.IPv6 zero compression
  3. C.IPv6 EUI-64
  4. D.Router Advertisement (RA)
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24. Which statement is correct?

Senior
  1. A.IPv6 privacy extensions (RFC 8981) — collapsing one run of consecutive all-zero groups into a double colon to shorten an address
  2. B.IPv6 privacy extensions (RFC 8981) — generating random, rotating interface identifiers to prevent tracking of a host by address
  3. C.IPv6 privacy extensions (RFC 8981) — deriving the host portion of an address from the interface MAC by inserting fffe and flipping a bit
  4. D.IPv6 privacy extensions (RFC 8981) — a multicast group derived from an address that NDP uses instead of broadcast for resolution
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