ACSP ACSP - Aruba Certified Switching Professional IPv6 and Tunneling Technologies Questions and Answers 1 — Questions and Answers
Question 1: What is the total length of an IPv6 address?
- 32 bits
- 64 bits
- 128 bits (Correct answer)
- 256 bits
Correct answer: 128 bits
IPv6 addresses are 128 bits long, written as eight groups of four hexadecimal digits separated by colons.
Question 2: Which IPv6 address type (FC00::/7) is analogous to IPv4 private address ranges such as RFC 1918?
- Link-local addresses (FE80::/10)
- Unique local addresses (FC00::/7) (Correct answer)
- Global unicast addresses (2000::/3)
- Multicast addresses (FF00::/8)
Correct answer: Unique local addresses (FC00::/7)
Unique local addresses (FC00::/7, commonly FD00::/8) are the IPv6 equivalent of IPv4 private addresses and are not routable on the public internet.
Question 3: What is the primary purpose of IPv6 link-local addresses (FE80::/10)?
- To provide globally routable IPv6 connectivity to the internet
- To enable communication between nodes on the same link without requiring a router (Correct answer)
- To replace IPv4 DHCP for address assignment
- To assign addresses to loopback interfaces only
Correct answer: To enable communication between nodes on the same link without requiring a router
Link-local addresses are used for communication between devices on the same network segment and are automatically configured on every IPv6-enabled interface.
Question 4: Which protocol replaces ARP in IPv6 networks for resolving IPv6 addresses to MAC addresses?
- DHCPv6
- ICMPv6 Neighbor Discovery Protocol (NDP) (Correct answer)
- IGMPv3
- RARP
Correct answer: ICMPv6 Neighbor Discovery Protocol (NDP)
IPv6 uses ICMPv6 Neighbor Discovery Protocol (NDP) instead of ARP, using multicast Neighbor Solicitation and Neighbor Advertisement messages for address resolution.
Question 5: What does SLAAC (Stateless Address Autoconfiguration) allow an IPv6 host to do?
- Automatically configure its own IPv6 address using Router Advertisements without a DHCP server (Correct answer)
- Assign static IPv6 addresses from a centralized address pool
- Encrypt IPv6 traffic between hosts on the same subnet
- Translate IPv6 addresses to IPv4 for internet access
Correct answer: Automatically configure its own IPv6 address using Router Advertisements without a DHCP server
SLAAC allows IPv6 hosts to automatically derive their own addresses from the prefix advertised in Router Advertisements, requiring no DHCPv6 server.
Question 6: What is the IPv6 loopback address, equivalent to IPv4's 127.0.0.1?
- ::1 (Correct answer)
- FE80::1
- FC00::1
- FF00::1
Correct answer: ::1
The IPv6 loopback address is ::1 (fully expanded: 0000:0000:0000:0000:0000:0000:0000:0001), used to test the local IPv6 stack.
ACSP ACSP - Aruba Certified Switching Professional IPv6 and Tunneling Technologies Questions and Answers 1
What is the total length of an IPv6 address?