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  2. Cisco Certification
  3. 100-160 Exam
  4. Cisco.100-160.v2026-01-08.q116 Dumps
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Question 106

What should you create to prevent spoofing of the internal network?

Correct Answer: B
The CCST Cybersecurity Study Guide states that Access Control Lists (ACLs) can be used to filter traffic based on IP addresses and block packets that appear to originate from the internal network but arrive from external interfaces (IP spoofing).
"ACLs can prevent spoofing by dropping traffic from external sources that claim to have an internal source address. Configuring ACLs on the perimeter firewall or router is a common countermeasure for IP spoofing." (CCST Cybersecurity, Basic Network Security Concepts, ACLs and Traffic Filtering section, Cisco Networking Academy) A (NAT rule) changes IP addresses but does not inherently prevent spoofing.
B (ACL) is correct because it can enforce anti-spoofing filters.
C (host file) only affects name resolution locally.
D (DNS record) is for domain mapping, not spoofing prevention.
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Question 107

Which step should be performed immediately after identifying a critical vulnerability affecting internet-facing systems?

Correct Answer: B
The CCST Cybersecurity Study Guide states that after confirming a vulnerability is relevant and critical, the next step is to apply available patches or mitigations as soon as possible to reduce the attack surface.
"When a critical vulnerability is identified, remediation steps such as applying patches or configuration changes should be implemented immediately to prevent exploitation." (CCST Cybersecurity, Vulnerability Assessment and Risk Management, Vulnerability Remediation section, Cisco Networking Academy)
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Question 108

Which protocol is responsible for resolving IP addresses to domain names?

Correct Answer: A
DNS (Domain Name System) is responsible for resolving IP (Internet Protocol) addresses to domain names. It translates human-readable domain names, such as www.example.com, into IP addresses, which are numerical identifiers used to locate and identify devices on a network.
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Question 109

Move each NIST Incident Response Lifecycle phase from the list on the left to the correct description on the right.
Note: You will receive partial credit for each correct answer.

Correct Answer:
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Question 110

During which stage of the incident response lifecycle are security incidents identified and prioritized?

Correct Answer: A
The detection and analysis stage is where security incidents are identified and prioritized. This stage involves monitoring and analyzing network logs, security systems, and other sources of information to identify signs of a potential security incident. Once identified, incidents are further analyzed to determine their scope and impact.
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