Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
What is the primary reason DNS is easier for humans to use than raw IP addressing?
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 lets users work with readable hostnames instead of memorizing numeric IP addresses
This is correct because DNS improves usability through names.
B
Distractor review
It automatically replaces subnet masks on all hosts
This is wrong because DNS does not assign or replace subnet masks.
C
Distractor review
It encrypts all Internet traffic by default
This is wrong because DNS is not the same thing as universal traffic encryption.
D
Distractor review
It removes the need for default gateways
This is wrong because DNS does not eliminate routing requirements.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking DNS for a service that manages subnet masks, encrypts traffic, or replaces routing functions like default gateways. Some candidates incorrectly select options suggesting DNS automatically replaces subnet masks or encrypts all Internet traffic. These are incorrect because DNS solely resolves hostnames to IP addresses and does not modify network configurations or provide security features. Misunderstanding DNS’s role can lead to selecting answers that confuse name resolution with other IP services or security protocols, which is a common pitfall in CCNA exams.
Technical deep dive
How to think about this question
The Domain Name System (DNS) is a hierarchical and decentralized naming system that translates human-friendly domain names into IP addresses, which are numerical labels assigned to devices on a network. Humans find it difficult to memorize long strings of numbers such as IPv4 addresses (e.g., 192.168.1.1) or IPv6 addresses, so DNS provides a layer of abstraction by allowing users to use readable hostnames like www.example.com. This name-to-address mapping is essential for usability and efficient network communication. In Cisco networking and the CCNA context, DNS operates as an IP service that resolves hostnames to IP addresses, enabling devices and users to communicate without needing to remember numeric addresses. When a user enters a hostname, the DNS client queries a DNS server to retrieve the corresponding IP address. This process is fundamental for services such as web browsing, email, and remote access. DNS does not alter subnet masks, encrypt traffic, or affect routing decisions like default gateways; its sole purpose is name resolution. A common exam trap is confusing DNS with other network functions such as encryption or routing. For example, some may incorrectly believe DNS encrypts traffic or replaces subnet masks, which it does not. Understanding that DNS strictly handles name resolution helps avoid these misconceptions. Practically, DNS improves network usability and troubleshooting by allowing administrators and users to work with meaningful names rather than numeric IPs, which is critical in large networks and the Internet.
KKey Concepts to Remember
- DNS translates human-friendly hostnames into numeric IP addresses to simplify network communication for users and devices.
- Cisco devices use DNS queries to resolve hostnames, enabling services like web access and remote management without memorizing IP addresses.
- DNS does not modify subnet masks or network configurations; it strictly provides name resolution services.
- DNS does not encrypt traffic; encryption is handled by other protocols such as IPsec or TLS.
- DNS does not replace default gateways or routing functions; routing decisions remain independent of DNS resolution.
- Effective DNS resolution improves network usability and troubleshooting by mapping readable names to IP addresses.
- Misunderstanding DNS’s role can lead to confusing it with security or routing services, which is a common exam mistake.
- In Cisco networks, DNS is a critical IP service that supports connectivity by resolving names but does not alter packet forwarding.
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.
Related practice questions
Related 200-301 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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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 hostnames into numeric IP addresses to simplify network communication for users and devices.
What is the correct answer to this question?
The correct answer is: It lets users work with readable hostnames instead of memorizing numeric IP addresses — DNS is easier for humans because it lets users work with readable names instead of memorizing numeric IP addresses. In plain language, people remember names far more easily than long strings of numbers. DNS creates a layer of usability by mapping those names to the IP information that devices actually need for communication. This matters because even when underlying connectivity is perfect, usability suffers without name resolution. The correct answer is the one focused on human-friendly naming rather than on routing, encryption, or automatic address assignment.
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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