Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
Why is administratively shutting down unused switch ports considered a useful hardening practice?
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
Because it reduces attack surface by removing unused active connection points.
This is correct because unused enabled ports are avoidable exposure points.
B
Distractor review
Because it forces all users to manage devices with SSH.
This is wrong because shutting unused switch ports does not directly enforce SSH.
C
Distractor review
Because it converts remaining ports into trunks.
This is wrong because disabling unused ports does not change the role of active ports.
D
Distractor review
Because it replaces VLAN segmentation.
This is wrong because port shutdown and VLAN design solve different problems.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A common exam trap is to mistakenly believe that shutting down unused switch ports enforces secure management protocols like SSH or replaces VLAN segmentation. While SSH secures device access and VLANs logically separate traffic, disabling unused ports physically removes potential unauthorized connection points but does not enforce management protocols or substitute VLAN design. Confusing these distinct security controls can lead to selecting incorrect answers that describe unrelated functions. The key is to recognize that port shutdown reduces attack surface by removing unused active connection points, not by changing logical segmentation or management methods.
Technical deep dive
How to think about this question
Administratively shutting down unused switch ports is a fundamental security hardening practice in Cisco networking. Switch ports that are enabled but not in use represent potential entry points for unauthorized devices, increasing the attack surface of the network. By disabling these ports, network administrators effectively remove these unused physical access points, reducing the risk of unauthorized access or network breaches. This practice complements other security measures such as VLAN segmentation and access control lists (ACLs) by minimizing exposure at the physical layer. The decision to administratively shut down unused ports follows a straightforward rule: if a port is not required for legitimate business or network operations, it should be disabled to prevent any unintended connections. Cisco switches allow administrators to manually disable ports using the "shutdown" command in interface configuration mode. This prevents the port from forwarding traffic or learning MAC addresses, effectively isolating it from the network. This method is preferred over leaving ports in an active state with no connected device, as it proactively closes a potential vulnerability. A common exam trap is confusing port shutdown with other security controls such as VLAN segmentation or enforcing secure management protocols like SSH. While VLANs logically separate traffic and SSH secures device management, shutting down unused ports physically removes access points and does not replace these controls. Practically, leaving unused ports enabled can allow attackers to connect rogue devices or launch attacks like MAC flooding. Therefore, disabling unused ports is a simple yet effective physical-layer security measure that reduces risk without impacting legitimate network functions.
KKey Concepts to Remember
- Administratively shutting down unused switch ports removes unnecessary physical access points and reduces the network attack surface.
- Cisco switches use the "shutdown" command in interface configuration mode to disable unused ports and prevent traffic forwarding.
- Unused active switch ports can allow unauthorized devices to connect, increasing the risk of network breaches or attacks.
- Disabling unused ports complements VLAN segmentation and ACLs but does not replace these logical security controls.
- Leaving unused ports enabled creates avoidable exposure points that attackers can exploit to gain network access.
- Physical port shutdown prevents MAC address learning and traffic forwarding on the disabled interface.
- Network hardening includes removing risks that do not need to exist, such as open unused switch ports.
- Administratively shutting down ports is a proactive security measure that reduces attack vectors at the physical layer.
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?
Administratively shutting down unused switch ports removes unnecessary physical access points and reduces the network attack surface.
What is the correct answer to this question?
The correct answer is: Because it reduces attack surface by removing unused active connection points. — Unused active ports create unnecessary exposure. In practical terms, if a port is not needed, leaving it active gives someone an opportunity to connect a device where no legitimate business need exists. Shutting the port down removes that access point and reduces attack surface. This is a simple but effective hardening measure. It does not replace other controls, but it removes a risk that does not need to exist in the first place.
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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