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Question 141.

Which networking concept divides a large IP network into smaller logical networks?

1. Subnetting
   2. File compression
   3. Disk mirroring
   4. Password hashing

Correct Answer: 1

Explanation:

Subnetting divides an IP network into smaller logical networks. This can improve address organization, routing efficiency, segmentation, and security design. Separate subnets can be assigned to different departments, server groups, guest systems, or security zones. File compression reduces file size, disk mirroring provides storage redundancy, and password hashing protects stored password representations. Subnetting itself does not enforce security policy, but it provides logical boundaries that firewalls and routers can use when controlling communication between different parts of an environment.

Question 142.

Which Palo Alto Networks capability can associate traffic with users rather than relying only on IP addresses?

1. Static NAT
   2. Link aggregation
   3. DNS proxy
   4. User identification

Correct Answer: 4

Explanation:

User identification associates network activity with authenticated users or user groups. This allows security policy to be based on identity instead of only IP addresses, which may change or be shared. Identity context can help organizations apply different rules to administrators, employees, contractors, or other groups. Static NAT translates IP addresses, link aggregation combines network links, and DNS proxy functionality relates to name-resolution handling. User-aware policy provides better context for both security enforcement and investigations because analysts can understand which identity generated specific network activity.

Question 143.

Which term describes an attempt to use malicious code to take advantage of a software weakness?

1. Backup
   2. Authentication
   3. Exploit
   4. Segmentation

Correct Answer: 3

Explanation:

An exploit is code, a technique, or a sequence of actions designed to take advantage of a vulnerability. Successful exploitation may allow an attacker to execute code, access data, gain privileges, or disrupt a system. A backup is a copy of information used for recovery, authentication verifies identity, and segmentation separates systems or networks. Security teams reduce exploitation risk through patching, vulnerability management, intrusion prevention, secure configuration, application security, endpoint protection, and monitoring. Exploits may target known vulnerabilities or previously unknown weaknesses.

Question 144.

Which statement best describes network segmentation?

1. It gives every device unrestricted access.
   2. It separates systems into controlled network areas to limit unnecessary communication.
   3. It automatically removes malware from endpoints.
   4. It replaces user authentication.

Correct Answer: 2

Explanation:

Network segmentation separates systems into distinct logical or physical areas and controls communication between them. This reduces unnecessary access and can limit lateral movement if one system is compromised. For example, user devices, servers, guest systems, and management networks may be placed into different segments with firewall rules between them. Segmentation does not automatically remove malware or replace authentication. It works best as one layer of a broader security architecture that also includes identity controls, endpoint protection, threat prevention, and continuous monitoring.

Question 145.

Which security control most directly helps verify that downloaded software has not been altered?

1. Digital signature verification
   2. Screen locking
   3. Load balancing
   4. DHCP reservation

Correct Answer: 1

Explanation:

Digital signature verification can help confirm the authenticity and integrity of software. If the software has been modified after it was signed, signature validation may fail. This helps users and administrators identify tampered or untrusted packages. Screen locking protects unattended sessions, load balancing distributes workload, and DHCP reservations assign predictable IP addresses. Signature validation should be combined with trusted download sources, patch management, application control, malware prevention, and other software-supply-chain protections.

Question 146.

Which firewall log type is most useful for reviewing sessions between source and destination systems?

1. Configuration log
   2. System log
   3. Authentication log
   4. Traffic log

Correct Answer: 4

Explanation:

Traffic logs contain information about network sessions processed by the firewall. Depending on configuration, they may include source and destination addresses, ports, applications, users, security zones, bytes transferred, actions, and matched rules. Configuration logs record administrative changes, system logs record operational events, and authentication logs focus on authentication activity. Traffic logs are especially useful for troubleshooting connectivity, verifying policy behavior, investigating suspicious communications, and understanding how applications and users interact across security boundaries.

Question 147.

Which security practice helps protect against password reuse attacks across multiple services?

1. Disabling all logging
   2. Sharing administrator credentials
   3. Using unique passwords and multi-factor authentication
   4. Allowing anonymous management access

Correct Answer: 3

Explanation:

Using unique passwords prevents one compromised credential from automatically exposing multiple services, while multi-factor authentication provides an additional barrier if a password is stolen. Password reuse is a major reason credential stuffing can succeed. Disabling logging reduces visibility, sharing administrator credentials weakens accountability, and anonymous management access creates severe security risk. Organizations can also use password managers, compromised-credential detection, identity monitoring, and risk-based access controls to reduce exposure from stolen credentials.

Question 148.

What is the main purpose of a firewall’s management interface?

1. To carry all user application traffic by default
   2. To provide administrative access for configuration and monitoring
   3. To replace endpoint protection software
   4. To assign every user a public IP address

Correct Answer: 2

Explanation:

A management interface provides administrators with access to configure, monitor, and maintain a firewall. It may be used for administrative web access, command-line access, updates, logging integration, or other management functions depending on the platform. Management access should be restricted to trusted sources, protected with strong authentication, and monitored. The interface is not intended to replace endpoint protection or assign public addresses to users. Separating management access from ordinary user traffic can reduce exposure of critical administrative services.

Question 149.

Which security objective is most directly supported by hashing a file and later comparing the hash value?

1. Integrity
   2. Availability
   3. Scalability
   4. Portability

Correct Answer: 1

Explanation:

Hashing helps verify integrity because even a small change to a file will usually produce a different hash value. Comparing a known trusted hash with a newly calculated hash can reveal whether data has been modified. Availability concerns whether systems remain accessible, scalability concerns handling increased demand, and portability concerns moving software or data between environments. Hashing does not encrypt the file or hide its content. It is commonly used in software verification, forensic analysis, digital signatures, and other processes where detecting unauthorized modification is important.

Question 150.

Which network protocol is commonly used to obtain an IP address automatically from a network service?

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

Correct Answer: 4

Explanation:

DHCP automatically provides clients with IP configuration such as an IP address, subnet mask, default gateway, and DNS server information. This reduces the need to configure every device manually. DNS performs name resolution, NTP synchronizes clocks, and HTTPS protects web communication. DHCP information can also assist security investigations because it may help determine which device was using a particular IP address at a certain time. Organizations should protect DHCP infrastructure from unauthorized or rogue services that could disrupt network communication.

Question 151.

Which endpoint-security capability is most useful for isolating an infected workstation from the network?

1. DNS caching
   2. VLAN trunking
   3. Endpoint response or host isolation
   4. Static routing

Correct Answer: 3

Explanation:

Endpoint response capabilities can isolate a compromised workstation from most network communication while allowing security personnel to investigate it. Isolation can help stop malware from spreading, reaching command-and-control infrastructure, or accessing additional systems. DNS caching, VLAN trunking, and static routing are networking functions rather than direct endpoint-response capabilities. Host isolation should follow incident-response procedures and be coordinated with evidence preservation, business requirements, eradication, and recovery activities.

Question 152.

Which statement best describes the purpose of a firewall security zone?

1. It automatically patches endpoints.
   2. It groups interfaces or networks with similar security characteristics.
   3. It encrypts every stored file.
   4. It creates backups of traffic logs.

Correct Answer: 2

Explanation:

A security zone logically groups interfaces or network areas with similar trust levels or security requirements. Firewall policies can then control traffic between zones. Examples might include user, server, guest, external, and management zones. Zones help make segmentation and policy design easier to understand and maintain. They do not automatically patch systems, encrypt files, or create backups. Effective zone design should reflect actual business and security boundaries so that unnecessary communication can be restricted.

Question 153.

Which security practice is most appropriate for administrator accounts?

1. Use separate privileged accounts and strong authentication.
   2. Share one administrator account with all employees.
   3. Disable logging for privileged activity.
   4. Reuse the same password everywhere.

Correct Answer: 1

Explanation:

Separate privileged accounts reduce the exposure of administrative credentials during normal day-to-day activity. Strong authentication, restricted access, logging, and least privilege further protect these high-value accounts. Shared accounts reduce accountability, password reuse increases the impact of compromise, and disabling logs removes visibility into administrative actions. Privileged-access management, temporary elevation, and periodic reviews can provide additional protection. Because administrator accounts can make major system and policy changes, they deserve stronger controls than ordinary user accounts.

Question 154.

Which feature can help block access to known malicious or phishing websites?

1. Static routing
   2. Link aggregation
   3. VLAN tagging
   4. URL filtering

Correct Answer: 4

Explanation:

URL filtering can block web destinations based on category, reputation, known malicious activity, and organizational policy. It can help reduce exposure to phishing sites, malware-hosting pages, risky categories, and other unwanted web destinations. Static routing determines traffic paths, link aggregation combines interfaces, and VLAN tagging identifies logical Layer 2 membership. URL filtering is often combined with DNS security, threat prevention, user identification, application-aware policy, and malware analysis for stronger protection against web-based threats.

Question 155.

Which incident-response activity occurs after malicious software has been removed and systems are being returned to normal operation?

1. Initial reconnaissance
   2. Phishing delivery
   3. Recovery
   4. Exploitation

Correct Answer: 3

Explanation:

Recovery focuses on restoring affected systems and services to normal operation after containment and eradication activities have addressed the active threat. Teams may restore data, rebuild systems, verify security controls, monitor for recurrence, and gradually return services to production. Reconnaissance and exploitation are attacker activities, while phishing delivery is a potential attack method. Recovery should be performed carefully so compromised systems are not returned to service before the root cause has been addressed.

Question 156.

Which statement best describes the role of threat prevention on a firewall?

1. It permanently replaces operating-system patching.
   2. It helps inspect traffic for malicious exploits, malware, or other threats.
   3. It guarantees that every attack will be blocked.
   4. It removes the need for endpoint security.

Correct Answer: 2

Explanation:

Threat prevention inspects allowed traffic for malicious activity such as exploits, malware, or suspicious patterns and can block or otherwise respond to detected threats. It adds security beyond basic allow-or-deny policy. However, it does not replace patching, endpoint security, secure configuration, backups, or other controls. No technology can guarantee that every attack will be stopped. A layered strategy is more effective because different controls can address different attack techniques and provide additional protection if one layer fails.

Question 157.

Which security control helps prevent unauthorized access when a user’s password is stolen?

1. Multi-factor authentication
   2. Flat networking
   3. Anonymous access
   4. Shared passwords

Correct Answer: 1

Explanation:

Multi-factor authentication requires additional authentication evidence beyond a password. If an attacker steals a password, they may still be unable to log in without the second factor. Flat networking, anonymous access, and shared passwords increase security risk rather than reduce it. MFA is particularly valuable for privileged accounts, remote access, cloud services, and critical applications. Organizations should also monitor suspicious authentication activity and protect recovery mechanisms so attackers cannot easily bypass the additional factor.

Question 158.

Which event is most likely to require investigation by a security operations team?

1. A scheduled backup completes normally.
   2. A known administrator makes an approved change.
   3. A user logs in once from their usual workstation.
   4. An endpoint repeatedly contacts a domain known to host malware.

Correct Answer: 4

Explanation:

Repeated communication with a known malicious domain is a strong indicator that an endpoint may be compromised or attempting to reach attacker infrastructure. Security analysts should investigate the endpoint, associated user, network connections, processes, and related alerts. Normal backups, approved administrator changes, and routine logins are expected events, although they should still be logged appropriately. Security operations relies on contextual analysis to separate normal behavior from suspicious patterns that may require containment or further investigation.

Question 159.

Which principle is most important when designing access between internal network zones?

1. Allow all traffic by default.
   2. Trust all internal systems permanently.
   3. Permit only required communication according to business need.
   4. Disable security inspection.

Correct Answer: 3

Explanation:

Access between internal zones should follow least-privilege principles. Only communication required for legitimate business functions should be allowed. This reduces unnecessary attack paths and limits lateral movement if a system is compromised. Allowing all traffic or permanently trusting internal systems weakens segmentation. Disabling inspection reduces defensive visibility and protection. Firewall rules should be documented, reviewed periodically, and removed when no longer required. Internal traffic can be just as important to control as traffic entering from the internet.

Question 160.

Which approach provides the strongest overall protection against modern cyber threats?

1. Use only a perimeter firewall.
   2. Combine identity security, application-aware firewalling, segmentation, endpoint protection, threat prevention, logging, and recovery.
   3. Disable software updates to prevent configuration changes.
   4. Depend entirely on employees remembering complex passwords.

Correct Answer: 2

Explanation:

Modern threats can target users, endpoints, networks, applications, cloud services, and data, so layered security provides stronger protection than a single control. Identity security helps prevent unauthorized access, segmentation limits movement, application-aware firewalling improves traffic control, endpoint protection detects host activity, threat prevention blocks malicious content, and logging supports investigation. Recovery capabilities help restore operations if prevention fails. Disabling updates or relying solely on passwords creates unnecessary risk. Defense in depth improves resilience by providing multiple opportunities to prevent, detect, contain, and recover from attacks.