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| Section | Weight | Objectives |
|---|---|---|
| Network Security | 14% | - Authentication and access control - Segmentation and traffic protection - Network hardening and secure configuration - Threats, vulnerabilities, and mitigation - Security concepts and frameworks |
| Network Implementations | 20% | - Network services configuration - Routing concepts and protocols - Switching technologies and configurations - Wireless standards and deployment - Physical network installation |
| Network Operations | 19% | - High availability and redundancy - Infrastructure automation basics - Business continuity and disaster recovery - Network monitoring and documentation - Performance management and optimization |
| Networking Fundamentals | 23% | - OSI and TCP/IP models - Network topologies and types - IP addressing and subnetting - Ports, protocols, and services - Network devices and cabling |
| Network Troubleshooting | 24% | - Tools and command-line utilities - Performance and latency problems - Wireless and security troubleshooting - Connectivity issues - Troubleshooting methodology |
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NEW QUESTION # 155
A network engineer is now in charge of all SNMP management in the organization. The engineer must use a SNMP version that does not utilize plaintext dat a. Which of the following is the minimum version of SNMP that supports this requirement?
Answer: D
Explanation:
SNMPv3 is the version of the Simple Network Management Protocol that introduces security enhancements, including message integrity, authentication, and encryption. Unlike previous versions (v1 and v2c), SNMPv3 supports encrypted communication, ensuring that data is not transmitted in plaintext. This provides confidentiality and protects against eavesdropping and unauthorized access.
Reference: CompTIA Network+ study materials.
NEW QUESTION # 156
Which of the following is a type of NAC that uses a set of policies to allow or deny access to the network based on the user's identity?
Answer: D
Explanation:
802.1X is a port-based Network Access Control (NAC) method that enforces authentication before allowing access to the network. It uses a RADIUS server for identity verification and policy enforcement, ensuring only authorized users/devices gain access.
A . Standard ACL filters traffic by IP, not identity.
B . MAC filtering controls devices by hardware address but can be spoofed.
D . SSO (Single Sign-On) provides user convenience across services, not network-level access control.
Reference (CompTIA Network+ N10-009):
NEW QUESTION # 157
A network administrator wants to implement security zones in the corporate network to control access to only individuals inside of the corporation. Which of the following security zones is the best solution?
Answer: D
Explanation:
* Introduction to Security Zones:
* Security zones are logical segments within a network designed to enforce security policies and control access. They help in segregating and securing different parts of the network.
* Types of Security Zones:
* Trusted Zone: This is the most secure zone, typically used for internal corporate networks where only trusted users have access.
* Extranet: This zone allows controlled access to external partners, vendors, or customers.
* VPN (Virtual Private Network): While VPNs are used to create secure connections over the internet, they are not a security zone themselves.
* Public Zone: This zone is the least secure and is typically used for public-facing services accessible by anyone.
* Trusted Zone Implementation:
* The trusted zone is configured to include internal corporate users and resources. Access controls, firewalls, and other security measures ensure that only authorized personnel can access this zone.
* Internal network segments, such as the finance department, HR, and other critical functions, are usually placed in the trusted zone.
* Example Configuration:
* Firewall Rules: Set up rules to allow traffic only from internal IP addresses.
* Access Control Lists (ACLs): Implement ACLs on routers and switches to restrict access based on IP addresses and other criteria.
* Segmentation: Use VLANs and subnetting to segment and isolate the trusted zone from other zones.
* Explanation of the Options:
* A. Extranet: Suitable for external partners, not for internal-only access.
* B. Trusted: The correct answer, as it provides controlled access to internal corporate users.
* C. VPN: A method for secure remote access, not a security zone itself.
* D. Public: Suitable for public access, not for internal corporate users.
* Conclusion:
* Implementing a trusted zone is the best solution for controlling access within a corporate network.
It ensures that only trusted internal users can access sensitive resources, enhancing network security.
References:
* CompTIA Network+ guide detailing security zones and their implementation in a corporate network
* (see page Ref 9fBasic Configuration Commands).
NEW QUESTION # 158
Which of the following explains what happens if a packet is lost in transit when using UDP?
Answer: D
Explanation:
UDP (User Datagram Protocol) is a connectionless protocol that does not provide built-in mechanisms for error detection, retransmission, or acknowledgments. If a UDP packet is lost in transit, the protocol itself does not handle retransmission. However, some applications using UDP (e.g., TFTP or custom streaming protocols) may implement their own mechanisms to detect packet loss and request retransmission if needed.
Why not A? The data link layer (Layer 2) handles frame-level errors within a single network segment, not end-to-end packet loss across networks.
Why not B? The IP TTL (Time to Live) field prevents routing loops by decrementing with each hop, but IP does not handle retransmission.
Why not C? UDP does not use acknowledgments, so the sender does not expect or receive them.
NEW QUESTION # 159
Which of the following is a major difference between an IPS and IDS?
Answer: C
Explanation:
The key difference is that an Intrusion Prevention System (IPS) is installed in line with network traffic, allowing it to actively block threats. In contrast, an Intrusion Detection System (IDS) only monitors and alerts without actively blocking traffic.
Breakdown of Options:
A . An IPS needs to be installed in line with traffic and an IDS does not. โ
Correct answer. IPS actively prevents threats, while IDS only detects them.
B . An IPS is signature-based and an IDS is not. - False, both can use signature-based detection.
C . An IPS is less susceptible to false positives than an IDS. - False, both can produce false positives, depending on configurations.
D . An IPS requires less administrative overhead than an IDS. - False, IPS requires more administrative effort due to real-time blocking decisions.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 3.4: Explain network security devices.
NEW QUESTION # 160
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