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Question 201.

Which security control helps ensure that only approved users can access a sensitive application?

1. Access control
   2. Load balancing
   3. Packet fragmentation
   4. Data compression

Correct Answer: 1

Explanation:

Access control determines which users, devices, or applications are permitted to reach a resource and what actions they may perform. It commonly depends on authentication, authorization, roles, groups, and security policy. Load balancing distributes traffic among systems, packet fragmentation divides network packets into smaller pieces, and data compression reduces information size. Strong access control is important for protecting sensitive applications because authentication alone does not necessarily determine which resources an authenticated user should be allowed to use.

Question 202.

Which Palo Alto Networks firewall function can help identify malicious exploit attempts inside otherwise permitted traffic?

1. Static routing
   2. VLAN tagging
   3. DHCP relay
   4. Threat prevention

Correct Answer: 4

Explanation:

Threat prevention inspects allowed traffic for malicious content or behavior, including exploit attempts and other known threats. This provides protection beyond basic firewall rules that simply allow or deny connections. Static routing determines network paths, VLAN tagging identifies Layer 2 network membership, and DHCP relay forwards address-assignment messages between networks. Threat prevention should be combined with patching, endpoint protection, secure configuration, and monitoring because no single inspection technology can stop every possible attack.

Question 203.

Which term describes unauthorized movement from a compromised endpoint toward other internal systems?

1. Data replication
   2. Load distribution
   3. Lateral movement
   4. DNS resolution

Correct Answer: 3

Explanation:

Lateral movement occurs when an attacker uses access to one compromised system to reach additional hosts, accounts, applications, or data. Attackers may use stolen credentials, remote administration tools, shared services, or misconfigurations. Segmentation, least privilege, strong authentication, endpoint detection, and internal traffic monitoring can reduce lateral movement. Data replication creates copies of information, load distribution spreads workload, and DNS resolution translates names into addresses. Limiting lateral movement helps prevent a small incident from becoming an enterprise-wide compromise.

Question 204.

Which statement best describes the purpose of a firewall rulebase?

1. It creates user passwords automatically.
   2. It defines how traffic should be handled when specified conditions are matched.
   3. It replaces routing completely.
   4. It physically connects network cables.

Correct Answer: 2

Explanation:

A firewall rulebase contains security policies that determine how traffic should be handled. Rules may consider source and destination zones, users, addresses, applications, services, and other conditions before allowing or denying a session. Routing is still required to determine where traffic should be forwarded. The rulebase does not generate user passwords or perform physical cabling. Well-designed rulebases should follow least privilege, use meaningful names and documentation, enable appropriate logging, and be reviewed periodically for obsolete or overly broad entries.

Question 205.

Which action is most appropriate for reducing the risk associated with default passwords on newly installed devices?

1. Change them before placing the devices into production.
   2. Publish them for easier support access.
   3. Reuse the same default password across all devices.
   4. Disable authentication permanently.

Correct Answer: 1

Explanation:

Default credentials are widely known or easily discovered, making them dangerous if left unchanged. Organizations should replace default passwords with strong, unique credentials before devices are placed into production. Where possible, multi-factor authentication and centralized identity management can provide additional protection. Publishing or reusing default passwords makes compromise easier, while disabling authentication removes a fundamental security control. Secure deployment procedures should also include software updates, configuration hardening, logging, and removal of unnecessary services.

Question 206.

Which protocol commonly uses UDP port 53 for name-resolution queries?

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

Correct Answer: 4

Explanation:

DNS commonly uses UDP port 53 for many name-resolution queries, although TCP port 53 is also used in certain situations such as larger responses and some zone transfers. SSH typically uses TCP port 22, HTTPS commonly uses TCP port 443, and NTP commonly uses UDP port 123. DNS is security-relevant because malicious software can use domain names to reach attacker infrastructure, making DNS monitoring and filtering valuable for detecting suspicious communication.

Question 207.

Which security technology is designed to detect suspicious endpoint behavior even when a traditional malware signature is unavailable?

1. Static routing
   2. DHCP reservation
   3. Behavioral endpoint detection
   4. Link aggregation

Correct Answer: 3

Explanation:

Behavioral endpoint detection focuses on suspicious activity patterns rather than relying only on known malware signatures. For example, unusual process creation, credential access, persistence behavior, or unexpected network connections may indicate malicious activity. Static routing controls network paths, DHCP reservations assign predictable addresses, and link aggregation combines interfaces. Behavioral detection can help identify previously unknown or modified threats, but analysts still need context to distinguish malicious behavior from legitimate administrative or application activity.

Question 208.

Which statement best describes least-privilege firewall policy?

1. Permit all applications between all zones.
   2. Permit only the traffic required for legitimate business operations.
   3. Disable logging to reduce storage use.
   4. Trust all internal traffic automatically.

Correct Answer: 2

Explanation:

Least-privilege firewall policy allows only the traffic necessary for legitimate business requirements. Administrators should identify required users, applications, destinations, services, and zones rather than permitting broad access. Allowing all applications increases attack paths and can make lateral movement easier. Disabling logging removes valuable visibility, while automatically trusting internal traffic ignores the possibility of compromised endpoints or stolen credentials. Rules should also be reviewed regularly so obsolete access can be removed.

Question 209.

Which security objective is most directly supported by digital signatures?

1. Integrity and authenticity
   2. Availability only
   3. Network scalability
   4. Storage redundancy

Correct Answer: 1

Explanation:

Digital signatures help verify that information has not been altered and that it was signed using the expected cryptographic identity. These properties support integrity and authenticity. They are commonly used with software packages, documents, certificates, and secure communications. Availability concerns whether services remain accessible, scalability concerns handling increased demand, and redundancy provides additional copies or resources. Digital signatures do not necessarily encrypt the content itself, so confidentiality may require a separate encryption mechanism.

Question 210.

Which attack attempts to deceive a user through a fraudulent text message containing a malicious link?

1. Data mirroring
   2. Port scanning
   3. Load balancing
   4. Smishing

Correct Answer: 4

Explanation:

Smishing is phishing conducted through SMS or similar text messaging. Attackers may send fraudulent delivery notices, account alerts, payment requests, or other messages containing malicious links. Port scanning is used to identify reachable network services, while data mirroring and load balancing are legitimate operational functions. Users should treat unexpected links and urgent requests carefully, and organizations can reduce smishing risk through awareness training, multi-factor authentication, mobile security controls, and clear procedures for reporting suspicious messages.

Question 211.

Which Palo Alto Networks capability can help inspect and control files transferred through network applications?

1. Static routing
   2. VLAN trunking
   3. File inspection or blocking
   4. DHCP relay

Correct Answer: 3

Explanation:

File inspection and file-blocking capabilities can identify transferred file types and apply policy to allow, alert on, or block certain files. This can help reduce exposure to risky executables, scripts, archives, or other file types depending on organizational requirements. Static routing determines network paths, VLAN trunking transports multiple VLANs across a link, and DHCP relay forwards DHCP traffic. File controls are most effective when combined with malware prevention, sandboxing, endpoint security, and user awareness.

Question 212.

Which statement best describes the purpose of authentication logs?

1. They record only hardware inventory.
   2. They provide information about login and identity-verification events.
   3. They automatically patch vulnerable systems.
   4. They replace access-control policy.

Correct Answer: 2

Explanation:

Authentication logs record events related to identity verification, such as successful logins, failed attempts, authentication sources, account names, and sometimes multi-factor events. Security teams use these records to investigate password attacks, compromised accounts, unusual login behavior, and access problems. Authentication logs do not patch systems or replace access-control policy. They are most useful when combined with synchronized timestamps and related information from endpoints, firewalls, applications, and identity providers.

Question 213.

Which security practice is most appropriate for firewall configuration backups?

1. Store protected backup copies so the device can be restored after failure or incorrect changes.
   2. Keep no backups so outdated settings cannot exist.
   3. Store backups in a publicly accessible location.
   4. Give every user permission to modify them.

Correct Answer: 1

Explanation:

Protected configuration backups can help restore a firewall after hardware failure, accidental changes, corruption, or other operational problems. Backups should be access-controlled, stored securely, and created according to organizational procedures. Publicly accessible or widely modifiable backups could expose sensitive configuration information and create integrity risks. Organizations should also test restoration procedures and maintain appropriate version history so known-good configurations can be recovered when necessary.

Question 214.

Which protocol is most commonly associated with automatic clock synchronization on network devices?

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

Correct Answer: 4

Explanation:

NTP is commonly used to synchronize system clocks across network devices and servers. Consistent timestamps are important for security monitoring because analysts must correlate firewall logs, authentication events, endpoint alerts, and application activity accurately. SMTP is associated with email transport, HTTPS with secure web traffic, and DNS with name resolution. Significant clock differences can make incident timelines confusing, so trusted time sources and consistent NTP configuration are important for security operations.

Question 215.

Which event would most strongly suggest possible credential compromise?

1. A scheduled backup completes successfully.
   2. A user accesses a normal application during business hours.
   3. A user account successfully authenticates from two highly unusual locations within an implausibly short period.
   4. An approved software patch is installed.

Correct Answer: 3

Explanation:

Successful authentication from distant or unusual locations within an impossible or highly unlikely travel period can indicate that credentials have been stolen. Security teams should review source addresses, device information, multi-factor events, recent password changes, and subsequent account activity. Legitimate explanations such as VPNs or cloud infrastructure should also be considered. Routine backups, approved software updates, and normal application access are not inherently suspicious. Identity context is especially useful when identifying compromised accounts.

Question 216.

Which statement best explains why internal network traffic should still be monitored?

1. Internal systems can never be compromised.
   2. Attackers may use compromised internal systems for lateral movement or data access.
   3. Internal traffic always uses insecure protocols.
   4. Monitoring automatically prevents every attack.

Correct Answer: 2

Explanation:

Internal systems can be compromised through phishing, malware, stolen credentials, vulnerable software, or other techniques. Once inside, attackers may move laterally, access sensitive systems, or exfiltrate information. Monitoring east-west traffic can reveal unusual communication patterns that perimeter-only monitoring might miss. Internal traffic is not always insecure, and monitoring cannot guarantee prevention of every attack. It provides visibility that helps security teams detect suspicious behavior and investigate incidents more effectively.

Question 217.

Which control most directly limits exposure if a user accidentally installs a malicious application?

1. Endpoint protection and least privilege
   2. Anonymous administrator access
   3. Shared credentials
   4. Disabled security monitoring

Correct Answer: 1

Explanation:

Endpoint protection can detect or block malicious behavior, while least privilege limits what the malicious application can access using the user’s permissions. Together, these controls can reduce both the likelihood and impact of compromise. Anonymous administrator access, shared credentials, and disabled monitoring substantially increase risk. Application controls, patching, user awareness, and network segmentation can provide additional layers of protection if malicious software reaches an endpoint.

Question 218.

Which action is most appropriate after detecting unauthorized changes to a firewall configuration?

1. Ignore the changes if traffic still works.
   2. Delete all configuration history.
   3. Grant more administrators unrestricted access.
   4. Investigate the changes, contain unauthorized access, and restore approved configuration as appropriate.

Correct Answer: 4

Explanation:

Unauthorized firewall changes can weaken security policy, expose services, or indicate compromised administrator credentials. The organization should investigate who made the changes, determine their scope and impact, contain any unauthorized access, and restore a known approved configuration when appropriate. Configuration logs and backups can provide important evidence. Ignoring changes or deleting history removes valuable visibility, while expanding unrestricted administrator access makes the situation worse.

Question 219.

Which cloud-security control is most important for preventing an accidentally public storage resource from exposing sensitive data?

1. Larger virtual machines
   2. Faster internet connectivity
   3. Correct access permissions and configuration monitoring
   4. Additional desktop shortcuts

Correct Answer: 3

Explanation:

Cloud storage exposure often results from overly broad permissions or insecure configuration. Restricting access appropriately and continuously monitoring configuration can reduce the chance that sensitive information becomes publicly accessible. Larger virtual machines and faster connectivity do not solve access-control problems, and desktop shortcuts are unrelated. Cloud security should also include encryption, identity controls, logging, data classification, and regular review of externally accessible resources.

Question 220.

Which strategy best supports long-term improvement of an organization’s security posture?

1. Install one firewall and make no further changes.
   2. Continuously assess risks, update controls, monitor threats, train users, and improve response capabilities.
   3. Disable logging after deployment.
   4. Trust every device that connects from an internal network.

Correct Answer: 2

Explanation:

Cybersecurity requires continuous improvement because threats, vulnerabilities, technology, and business requirements change over time. Organizations should assess risks regularly, patch systems, review access, improve security policies, monitor emerging threats, train employees, test backups, and refine incident-response procedures. Treating security as a one-time project creates gaps as environments evolve. Continuous improvement helps ensure that technical controls, operational processes, and people remain aligned with current risks and organizational priorities.