Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
Exhibit
PC1 ipconfig IPv4 Address . . . . . . . . . : 10.40.40.25 Subnet Mask . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . : 10.40.40.1 DNS Server . . . . . . . . . . : 10.4.4.4 PC1> ping 8.8.8.8 success PC1> ping www.example.com failed Correct internal DNS server: 10.40.10.53
Clients can browse the internet by IP address but fail when using hostnames. Based on the exhibit, where is the fault most likely located?
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
Distractor review
The default gateway on the PC is incorrect.
Internet reachability by IP shows the gateway path works.
B
Best answer
The client is using the wrong DNS server address.
That is the direct cause of hostname resolution failure here.
C
Distractor review
NAT overload is failing on the edge router.
NAT is clearly working because the host reaches 8.8.8.8.
D
Distractor review
The switchport must be converted to a routed port.
That is unrelated to DNS resolution.
Common exam trap
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Technical deep dive
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
- Access ports place end devices into a single VLAN.
- Trunk ports carry multiple VLANs between switches.
- Allowed VLAN lists decide which VLANs can cross a trunk.
- Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
- Use show vlan brief to verify access VLANs.
- Use show interfaces trunk to verify trunk state and allowed VLANs.
- Do not treat every same-VLAN issue as a routing problem.
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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CCNA IPv6 practice questions
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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?
Access ports place end devices into a single VLAN.
What is the correct answer to this question?
The correct answer is: The client is using the wrong DNS server address. — The client has valid IP addressing and a working default gateway, but the DNS server address is wrong. The ability to reach 8.8.8.8 proves Layer 3 connectivity exists. Name resolution failures in this scenario point directly to a DNS configuration issue.
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.
Discussion
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