3.4 Given a scenario, implement IPv4 and IPv6 network services.
Objective 3.4 sits in Network Operations, which carries 19% of the Network+ exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.
Objective title verbatim from the official objectives. CompTIA exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
A technician enables IPv6 on a server and it forms a global address from a router advertisement. What must the node complete before that address can be used?
The concept
An IPv6 node has to prove a unicast address is unique on the link before it starts using it. The obligation follows the address itself, not the mechanism that produced it.
Why this answer
The address stays tentative until the node sends a neighbor solicitation naming that address and no neighbor answers. Only then may the interface treat it as assigned.
- ATesting only the link local address is a deprecated shortcut. It would pass if every address on the interface shared one interface identifier.
- BA Solicit begins stateful DHCPv6. That is the right first step when a router advertisement sets the managed configuration flag instead.
- Correct: every unicast address is checked for uniqueness before assignment, whatever produced it.
- DRegistering an AAAA record publishes a name to address mapping. It matters for reachability by name, after the address is already usable.
Now you: objective 3.4 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
A DNS administrator adds a host record whose leftmost label is 70 characters long, and the server rejects the name. Which size limit does that label break?
Sample question 2 of 3
A client workstation halfway through its DHCP lease sends the packet below. Which client state does this exchange show?
16:02:11.418393 IP 10.20.4.55.bootpc > 10.20.1.10.bootps: BOOTP/DHCP, Request from 00:1a:2b:3c:4d:5e, length 300
Client-Ethernet-Address 00:1a:2b:3c:4d:5e
Client-IP 10.20.4.55
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: RequestSample question 3 of 3
A client receives a DHCPACK for 192.168.30.44, then an ARP probe for that address draws a reply from another host. What must the client send next?
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Read the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.