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Question 81.

Which security concept focuses on verifying users and devices before granting access to resources?

1. Zero trust
   2. Packet duplication
   3. Open routing
   4. Broadcast forwarding

Correct Answer: 1

Explanation:

Zero trust emphasizes verifying access requests rather than automatically trusting users or devices based only on network location. Access decisions may consider identity, device state, requested resource, risk, and policy. The approach also supports least privilege and continuous evaluation. Packet duplication copies traffic for monitoring or analysis, while routing and broadcasting are networking functions rather than access-security models. Zero trust is especially useful in modern environments where users, workloads, and applications may operate across offices, remote locations, cloud services, and mobile devices. Trust should be established according to policy instead of being assumed simply because traffic originates from an internal network.

Question 82.

Which action most directly reduces the risk of an attacker exploiting a known software vulnerability?

1. Increase screen resolution.
   2. Add more desktop icons.
   3. Disable security logging.
   4. Apply the appropriate security patch.

Correct Answer: 4

Explanation:

Applying a security patch corrects or mitigates a known software weakness and can prevent attackers from successfully exploiting that vulnerability. Organizations should maintain an inventory of systems, monitor vulnerability information, prioritize high-risk issues, test patches where appropriate, deploy updates, and verify successful installation. Screen resolution and desktop icons have no effect on software vulnerabilities. Disabling logging weakens visibility and may make attacks harder to detect or investigate. Patching is an important security practice, although it should be combined with secure configuration, endpoint protection, network controls, backups, and continuous monitoring because not every threat depends on an already known vulnerability.

Question 83.

Which Palo Alto Networks firewall capability is intended to identify users so security policy can be applied according to identity rather than only IP address?

1. Static routing
   2. DHCP relay
   3. User identification
   4. Port mirroring

Correct Answer: 3

Explanation:

User identification associates network activity with authenticated users or groups. This allows policies to consider identity instead of relying only on IP addresses, which may change or be shared. Identity-aware policy can help organizations apply different access rules to administrators, employees, contractors, or other groups. Static routing determines network paths. DHCP relay helps forward DHCP requests between different network segments. Port mirroring copies traffic for analysis. Combining user context with application visibility and security policy can make firewall rules more precise and easier to align with business requirements.

Question 84.

Which protocol is commonly used to translate a website name into an IP address?

1. SMTP
   2. DNS
   3. SSH
   4. NTP

Correct Answer: 2

Explanation:

DNS translates domain names into information such as IP addresses so applications can locate network services. SMTP is commonly used for email transfer, SSH provides secure remote administration, and NTP helps synchronize system clocks. DNS is fundamental to normal network operation and is also security-relevant because attackers may use malicious domains, suspicious name lookups, or DNS-based command-and-control activity. Security teams frequently monitor DNS traffic for unusual behavior and may use DNS security controls to block known malicious domains before users or systems establish harmful connections.

Question 85.

Which control is most appropriate for preventing unauthorized communication between a guest network and sensitive internal servers?

1. Firewall security policy
   2. Screen lock timeout
   3. Disk compression
   4. Printer permissions

Correct Answer: 1

Explanation:

A firewall security policy can restrict communication between the guest network and sensitive internal resources. The guest network can be placed in a separate security zone, and policy can permit only necessary services while denying inappropriate access. Screen locks protect local device sessions, disk compression reduces storage requirements, and printer permissions control printing rather than network segmentation. Separating guest devices from trusted systems reduces the risk that an unmanaged or compromised guest device can directly reach internal servers. Proper segmentation should be combined with monitoring, secure wireless configuration, and appropriate internet-access controls.

Question 86.

Which term describes traffic that is permitted to enter a network from the internet toward an internal service?

1. East-west traffic
   2. Local loopback traffic
   3. Broadcast traffic
   4. Inbound traffic

Correct Answer: 4

Explanation:

Inbound traffic travels from an external source toward a protected internal or published service. Security teams often apply firewall rules, threat prevention, and logging to inbound connections because internet-facing services may be exposed to scanning, exploitation attempts, and other attacks. East-west traffic generally describes communication between systems inside or across internal environments. Loopback traffic remains local to a system, while broadcast traffic is sent to multiple systems within a local network segment. Understanding traffic direction is important when designing security policy and troubleshooting access through a firewall.

Question 87.

Which security technology can inspect files or behavior for malware and suspicious activity on an employee laptop?

1. DHCP server
   2. Layer 2 switch
   3. Endpoint security platform
   4. DNS forwarder

Correct Answer: 3

Explanation:

Endpoint security platforms protect laptops, workstations, and servers by monitoring files, processes, behavior, and other host activity. Depending on the product, capabilities may include malware prevention, exploit protection, endpoint detection and response, behavioral analytics, and device isolation. DHCP provides network configuration, Layer 2 switches forward Ethernet frames, and DNS forwarders process name-resolution requests. Endpoint security complements network defenses because malicious activity may occur directly on a device after a file is opened, a credential is stolen, or an application is exploited.

Question 88.

Which statement best describes a security policy rule on a firewall?

1. It increases physical memory on the firewall.
   2. It defines conditions under which traffic is allowed, denied, or otherwise controlled.
   3. It replaces all endpoint protections.
   4. It automatically creates user passwords.

Correct Answer: 2

Explanation:

A firewall security policy rule defines how traffic should be handled when specified conditions are matched. Conditions may include source and destination zones, addresses, users, applications, services, or other context. The action may allow, deny, inspect, log, or apply additional security profiles depending on the platform. Security policy does not increase hardware memory, create passwords, or eliminate the need for endpoint security. Well-designed rules should permit required business communication while minimizing unnecessary access. Administrators should also review logs and periodically remove obsolete or overly broad rules.

Question 89.

Which objective is most closely associated with maintaining access to systems during a hardware failure?

1. Availability
   2. Confidentiality
   3. Nonrepudiation
   4. Obfuscation

Correct Answer: 1

Explanation:

Availability ensures that systems and information remain accessible to authorized users when needed. Redundant hardware, clustering, backups, failover, disaster recovery, and resilient network design can all improve availability. Confidentiality protects data from unauthorized disclosure. Nonrepudiation provides evidence that an action occurred and cannot easily be denied. Obfuscation makes information or code more difficult to interpret. High availability is important for firewalls, authentication systems, applications, and other critical infrastructure because the failure of a single device should not necessarily interrupt essential services.

Question 90.

Which authentication method provides stronger protection than a password alone?

1. Reusing the same password on every service
   2. Disabling account monitoring
   3. Sharing one account across a department
   4. Multi-factor authentication

Correct Answer: 4

Explanation:

Multi-factor authentication requires users to provide evidence from more than one authentication-factor category, such as a password plus a hardware token or registered device. This reduces the risk that a stolen password alone will provide access. Password reuse increases exposure because one compromised credential can affect multiple systems. Shared accounts weaken accountability, and disabling monitoring removes visibility into suspicious authentication activity. MFA is particularly important for administrative accounts, remote access, cloud applications, and other systems where credential compromise could result in significant security impact.

Question 91.

Which type of firewall information is most useful for determining whether traffic was permitted or denied by a security rule?

1. Office seating chart
   2. Printer inventory
   3. Traffic log
   4. Building access map

Correct Answer: 3

Explanation:

Traffic logs record information about network sessions and policy decisions. Depending on the platform, they may include source and destination addresses, ports, applications, users, zones, actions, byte counts, session duration, and the rule that matched. Security teams can use these logs for troubleshooting, monitoring, auditing, and incident investigation. Printer inventories, office layouts, and physical access maps do not show firewall traffic decisions. Accurate logging is especially important when administrators need to determine why a connection failed or whether suspicious traffic was allowed through the firewall.

Question 92.

Which statement best describes the purpose of threat intelligence in cybersecurity?

1. To replace all security analysts
   2. To provide information about known or emerging threats that can improve detection and prevention
   3. To increase monitor size
   4. To eliminate the need for security policy

Correct Answer: 2

Explanation:

Threat intelligence provides contextual information about attackers, malicious infrastructure, techniques, vulnerabilities, malware, and other indicators that can improve defensive decisions. Security platforms may use intelligence to identify suspicious domains, IP addresses, files, or attack patterns. Analysts can also use it to prioritize investigations and understand emerging threats. Threat intelligence does not replace human analysts or security policy. Its value depends on relevance, quality, timeliness, and integration with security controls. Effective intelligence helps organizations move from purely reactive security toward more informed prevention and detection.

Question 93.

Which security principle recommends keeping administrative permissions separate from ordinary day-to-day user activity?

1. Privilege separation
   2. Open access
   3. Anonymous administration
   4. Flat authorization

Correct Answer: 1

Explanation:

Privilege separation reduces risk by keeping highly privileged activity separate from normal user activity. An administrator may use a standard account for email and general work while using a separate privileged account only when administrative access is required. This limits exposure of powerful credentials and improves accountability. Open access and flat authorization provide overly broad permissions, while anonymous administration removes accountability. Privileged accounts should also use strong authentication, logging, restricted management access, and least privilege because compromise of an administrative identity can have a much greater impact than compromise of a standard account.

Question 94.

Which protocol is commonly used to synchronize clocks between network systems?

1. FTP
   2. DNS
   3. SMTP
   4. NTP

Correct Answer: 4

Explanation:

NTP is commonly used to synchronize system clocks across networks. Accurate time is important for security because logs from firewalls, endpoints, servers, identity systems, and cloud services must be correlated during investigations. If device clocks differ significantly, reconstructing a reliable incident timeline becomes much more difficult. FTP transfers files, DNS performs name resolution, and SMTP is commonly used for email transfer. Organizations should use trusted time sources and appropriate NTP configuration so critical systems maintain consistent timestamps for monitoring, auditing, authentication, and troubleshooting.

Question 95.

Which type of firewall policy would best support least privilege between two internal security zones?

1. Permit every application between both zones.
   2. Allow all traffic from any user without logging.
   3. Allow only required applications and destinations according to business need.
   4. Disable all security inspection permanently.

Correct Answer: 3

Explanation:

Least-privilege firewall policy permits only the communication necessary for legitimate business requirements. Restricting allowed applications, users, destinations, and services reduces unnecessary exposure and limits possible lateral movement. Allowing all traffic between zones undermines segmentation and creates more opportunities for compromised systems to reach sensitive resources. Logging and security inspection provide additional visibility and protection. Firewall rules should be reviewed periodically because business requirements change over time, and permissions that were once necessary may later become obsolete or unnecessarily broad.

Question 96.

Which statement best describes malware sandboxing?

1. It physically disconnects every computer from the network.
   2. It analyzes suspicious content in an isolated environment to observe potentially malicious behavior.
   3. It automatically gives users administrative rights.
   4. It replaces the need for backups.

Correct Answer: 2

Explanation:

Sandboxing analyzes suspicious files or content in an isolated environment so security systems can observe behavior without exposing normal production systems directly. A sandbox may look for actions such as process creation, file modification, network connections, or other indicators of malicious activity. It does not automatically disconnect every computer, grant administrative rights, or replace backups. Sandboxing can help identify previously unknown or evasive malware when traditional signature-based detection is insufficient. It works best as one layer of a broader security architecture that also includes endpoint protection, threat prevention, URL controls, and monitoring.

Question 97.

Which practice is most appropriate when creating firewall rules for a new application?

1. Document the business requirement and permit only the necessary traffic.
   2. Create an unrestricted any-to-any rule permanently.
   3. Disable all logging for the application.
   4. Give every user administrator privileges.

Correct Answer: 1

Explanation:

Firewall rules should be based on documented business requirements and should permit only the communication necessary for the application to function. Administrators should identify required sources, destinations, users, applications, services, and security inspection needs. Broad any-to-any rules increase exposure and can undermine segmentation. Logging provides useful visibility for troubleshooting and security monitoring. Administrative permissions are unrelated to basic application traffic requirements. Good firewall policy management also includes rule naming, ownership, change approval, periodic review, and removal of obsolete access.

Question 98.

Which event would be most suspicious from an identity-security perspective?

1. A user logs in once from their normal device.
   2. A scheduled backup starts successfully.
   3. An approved application update is installed.
   4. An administrator account authenticates from multiple unusual locations within a short period.

Correct Answer: 4

Explanation:

An administrator account appearing to authenticate from multiple unusual locations within a short time could indicate credential theft or other unauthorized use. Privileged accounts deserve especially careful monitoring because they may have broad access to systems and configurations. A normal login, successful backup, or approved update is generally expected activity. Security teams should investigate the timing, source addresses, devices, authentication factors, and subsequent actions associated with suspicious privileged logins. Context is important because unusual activity is not automatically malicious, but it can provide a strong reason for investigation.

Question 99.

Which action is most appropriate after confirming that an endpoint is actively communicating with known malicious infrastructure?

1. Ignore the communication if the user is busy.
   2. Delete all organizational backups.
   3. Contain or isolate the affected endpoint according to incident-response procedures.
   4. Give the endpoint additional administrative privileges.

Correct Answer: 3

Explanation:

If malicious communication is confirmed, containment helps prevent further damage, data theft, command-and-control activity, or lateral movement. Depending on organizational procedures and the situation, the endpoint may be isolated from the network while security personnel preserve evidence and investigate the scope of compromise. Ignoring known malicious activity can allow an incident to worsen. Deleting backups damages recovery capability, while adding administrative privileges increases risk. Incident response should follow established processes so containment, investigation, eradication, and recovery actions are coordinated and appropriately documented.

Question 100.

Which strategy provides the strongest protection for a modern enterprise network?

1. Trust all internal traffic without inspection.
   2. Use layered controls including identity security, segmentation, application-aware policy, threat prevention, endpoint protection, logging, and recovery.
   3. Disable security updates to avoid downtime.
   4. Depend entirely on user passwords.

Correct Answer: 2

Explanation:

A modern enterprise should use multiple complementary security controls rather than relying on one technology. Identity controls protect accounts, segmentation limits unnecessary access, application-aware policy provides contextual traffic control, threat prevention blocks attacks, endpoint security monitors hosts, and logging supports detection and investigation. Backups and recovery capabilities improve resilience when prevention fails. Automatically trusting internal traffic, disabling updates, or relying only on passwords creates unnecessary risk. A layered approach is stronger because attackers may bypass one control, but additional defenses can still prevent, detect, contain, or reduce the impact of a compromise.