Flashcards on Computer Networking: SRWE Exam Review
SRWE Exam Review: Master Computer Networking Essentials
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IPv6 and Addressing
15 cards
Card 1
Question: What does the acronym SLAAC stand for in IPv6, and what does automatic address configuration depend on?
Answer: SLAAC stands for Stateless Address Autoconfiguration. Automatic configuration relies on information received in ICMPv6 Router Advertisement (RA) messa
Card 2
Question: How does a host verify that an IPv6 address obtained via SLAAC or DHCP is not already in use by another device?
Answer: The host sends an ICMPv6 Neighbor Solicitation to that address. If no Neighbor Advertisement is received, the address is considered unique, and the ho
Card 3
Question: Which global configuration command enables IPv6 routing on a router (allowing it to send RA messages and configure a link-local address without DHCPv6
Answer: The `ipv6 unicast-routing` command in global configuration enables IPv6 on the router.
Card 4
Question: What prefix is used for an IPv6 default static route, and what is the command to route all traffic through interface Serial 0/1/1?
Answer: The IPv6 default static route uses the `::/0` prefix. The command is: `ipv6 route ::/0 serial 0/1/1`
Card 5
Question: What does setting the M (Managed) flag in Router Advertisement messages signify, and which command sets it?
Answer: Setting the M (Managed Address Configuration) flag informs hosts that they must obtain their global unicast addresses using stateful DHCPv6 (not SLAAC
Card 6
Question: What is the difference between 'stateful' and 'stateless' addressing in the context of IPv6, based on the content?
Answer: Stateful means the host obtains its address via DHCPv6 (the server maintains state). Stateless (SLAAC) means the host constructs its address itself fr
Card 7
Question: When verifying address uniqueness, which invalid methods mentioned in the content would not be used for IPv6?
Answer: ARP broadcast (which is for IPv4) is not used, nor is checking the local neighbor cache without sending a Neighbor Solicitation. The correct method is
Card 8
Question: Which IPv4 equivalent command is mentioned as similar to enabling IPv6 using `ipv6 unicast-routing`?
Answer: It is the equivalent of the `ip routing` command, which enables IPv4 routing on the router.
Card 9
Question: Which interface command tells clients to use SLAAC for their IPv6 address while also obtaining additional parameters from DHCPv6 (e.g., DNS)?
Answer: `ipv6 nd other-config-flag`
Card 10
Question: Where is the DNS server address specified in the configuration for stateless DHCPv6?
Answer: In the `ipv6 dhcp pool` section (the `dns-server` line).