Dns — CompTIA Network+ (N10-009) Practice Questions
DNS, the Domain Name System, is the distributed, hierarchical naming system that resolves human-readable hostnames into IP addresses that routers and hosts can use to forward traffic. The Network+ N10-009 exam tests DNS record types including A, AAAA, CNAME, MX, PTR, NS, and TXT, as well as the resolution process involving recursive and authoritative servers. Candidates must understand how DNS failures or misconfigurations manifest as connectivity issues, and how tools like nslookup and dig are used to query and troubleshoot DNS. DNS security concepts such as DNSSEC and the risk of DNS spoofing are also within scope.
Free questions on dns
Which Layer 4 protocol is used by DNS for zone transfers and should be protected on internal networks?
Free question · medium · full answer + explanation
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