A user reports that typing www.example.com in a browser fails, but accessing the site by its IP address works. A packet capture shows the client sent a DNS query to the configured DNS server but received no response. What is the most likely cause?

The A record for www.example.com is missing

The client is using an incorrect DNS suffix

The DNS server cannot reach the root servers

The client's DNS cache is corrupted

What is the primary purpose of the Domain Name System (DNS)?

To route packets between different networks

To provide secure encrypted communication between hosts

To assign IP addresses to hosts automatically

To translate human-readable domain names into IP addresses

A DHCP server assigns IP addresses to clients, and the DNS server must automatically update its records when a client receives a new address. Which mechanism enables this integration?

The DNS server polling the DHCP server for address changes

The client manually updating its DNS record after receiving an address

Dynamic DNS updates from the DHCP server to the DNS server

The DHCP server sending a broadcast to all DNS servers

A company uses DHCP to assign IP addresses to workstations and DNS for name resolution. When a workstation receives a new IP address from DHCP, its hostname should automatically update in DNS so other users can reach it by name. Which mechanism enables this automatic update?

Dynamic DNS updates performed by the DHCP client or server

The DNS server periodically polls the DHCP server for address assignments

The DHCP server sends a broadcast to all DNS servers to update their caches

The workstation manually updates its DNS record after receiving an IP address

CiscoCertified Network Associate (CCNA)

Domain 4Objective 3

4.3 Explain the Role of DHCP and DNS Within the Network 200-301 Practice Questions (Page 7)

Part of the IP Services domain, which accounts for 10% of the 200-301 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~5–8 in this domain), expect 1–1 from this objective — we provide 39 practice questions to prepare you well beyond it. (estimate)

39questions here

8free pages

9concepts

10%of the exam

Questions 31–35

31application · medium
A user reports that typing www.example.com in a browser fails, but accessing the site by its IP address works. A packet capture shows the client sent a DNS query to the configured DNS server but received no response. What is the most likely cause?
Select an answer first
32expert · medium
A company's website is hosted on a server with IPv4 address 203.0.113.10 and IPv6 address 2001:db8::10. The website is accessible via IPv4, but users on an IPv6-only network cannot access it. Which DNS record type is missing or misconfigured?
Select an answer first
33foundation · easy
What is the primary purpose of the Domain Name System (DNS)?
Select an answer first
34application · medium
A DHCP server assigns IP addresses to clients, and the DNS server must automatically update its records when a client receives a new address. Which mechanism enables this integration?
Select an answer first
35application · medium
A company uses DHCP to assign IP addresses to workstations and DNS for name resolution. When a workstation receives a new IP address from DHCP, its hostname should automatically update in DNS so other users can reach it by name. Which mechanism enables this automatic update?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to 200-301

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Cisco. “200-301” is a trademark of its owner, used for identification only.