Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
Which statement best describes why DNS improves usability for people using networks?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
It allows people to use memorable names instead of raw IP addresses.
This is correct because name-based access is the main usability benefit of DNS.
B
Distractor review
It assigns IP addresses to hosts automatically.
This is wrong because DHCP performs automatic address assignment.
C
Distractor review
It replaces the need for default gateways.
This is wrong because DNS does not remove routing requirements.
D
Distractor review
It determines the STP root bridge.
This is wrong because DNS is unrelated to spanning-tree elections.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking DNS for DHCP or routing functions. Some candidates incorrectly believe DNS assigns IP addresses automatically, which is actually DHCP’s role. Others confuse DNS with routing or STP functions, assuming it replaces default gateways or determines root bridges. This misunderstanding leads to selecting incorrect answers that describe address assignment or network topology roles. The trap lies in overlooking that DNS’s sole purpose is to translate human-readable names into IP addresses, enhancing usability without affecting routing or address allocation.
Technical deep dive
How to think about this question
The Domain Name System (DNS) is a fundamental IP service that translates human-friendly domain names into IP addresses used by devices to communicate on a network. Instead of requiring users to memorize numeric IP addresses, DNS allows them to use memorable names like www.example.com. This name-to-address mapping is essential for usability and scalability in modern networks, including those Cisco devices operate within. DNS operates by querying hierarchical name servers to resolve a domain name into an IP address. When a user enters a hostname, the DNS client sends a query to a DNS server, which either responds with the IP address or forwards the query to other DNS servers until the address is found. Cisco devices often rely on DNS to resolve names for management, routing, and service access, but DNS itself does not assign IP addresses or influence routing decisions. A common exam trap is confusing DNS with DHCP or routing protocols. DHCP automatically assigns IP addresses, while DNS only resolves names to addresses. DNS does not replace default gateways or affect Spanning Tree Protocol (STP) operations. Understanding these distinctions is critical for Cisco CCNA candidates to correctly identify DNS’s role in improving network usability by enabling name-based access rather than address assignment or network topology control.
KKey Concepts to Remember
- DNS translates human-friendly domain names into IP addresses to simplify network access for users and administrators.
- DNS queries follow a hierarchical process where local DNS servers forward requests to authoritative servers to resolve names.
- Cisco devices use DNS to resolve hostnames for management and service access but do not rely on DNS for IP address assignment.
- DHCP is responsible for automatic IP address assignment, which is a distinct function separate from DNS name resolution.
- DNS does not replace default gateways or routing functions; it solely provides name-to-address mapping to improve usability.
- Spanning Tree Protocol (STP) operations and root bridge elections are unrelated to DNS functionality and name resolution.
- Understanding the distinct roles of DNS, DHCP, routing, and STP is critical to correctly answering CCNA exam questions about IP services.
- DNS enhances network usability by allowing users to remember and use names instead of numeric IP addresses, reducing configuration errors.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
DNS translates human-friendly domain names into IP addresses to simplify network access for users and administrators.
What is the correct answer to this question?
The correct answer is: It allows people to use memorable names instead of raw IP addresses. — DNS improves usability because it lets people work with names instead of memorizing numeric IP addresses. In plain language, it is easier for users to remember something like a server name than a long string of numbers. DNS creates that usability layer while still allowing the network to use IP addresses underneath. This is one of the main practical reasons DNS exists. The correct answer is the one focused on human-friendly naming rather than address assignment or route calculation.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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