CompTIA Network+ (N10-009)

CompTIA Network+ (Exam N10-009) validates the core skills necessary to establish, maintain, troubleshoot and secure networks in any environment, preparing you for a rewarding career in networking and cybersecurity.

The Premier Early Career Networking Certification

Gain a wide range of technical and hands-on skills required of today’s early-career network administrators.

Exclusively Validates Vendor Neutral Network Management Knowledge

CompTIA Network+ is the only certification on the market that covers the core skills necessary to support networks in any environment.

Network+ is Approved for DoD 8140.03

CompTIA Network+ shows what you can do, not just what you know for the work roles of Technical Support Specialist, Network Operations Specialist and Systems Administrator.

What Skills Will You Learn?

Networking Concepts

Explain basic networking concepts, including the OSI model, network appliances, applications, cloud concepts, connectivity options and more.

Network Implementations

Understand routing technologies and important factors of physical installations; configure switching technologies and wireless devices.

Network Operations

Monitor and optimize networks to ensure business continuity.

Network Security

Understand security concepts and network attacks to harden networks against threats.

Network Troubleshooting

Explain the troubleshooting methodology and address common issues related to networking, including cable, connectivity, and software problems.

The CompTIA Network+ certification exam will certify the successful candidate has the knowledge and skills required to:

• Establish network connectivity by deploying wired and wireless devices.
• Explain the purpose of documentation and maintain network documentation.
• Configure common network services.
• Explain basic data-center, cloud, and virtual-networking concepts.
• Monitor network activity and troubleshoot performance and availability issues.
• Implement network security hardening techniques.
• Manage, configure, and troubleshoot network infrastructure.

1.0 Networking Concepts

Explain concepts related to the Open Systems Interconnection (OSI) reference model.

• Layer 1 - Physical
• Layer 2 - Data link
• Layer 3 - Network
• Layer 4 - Transport
• Layer 5 - Session
• Layer 6 - Presentation
• Layer 7 - Application

Compare and contrast networking appliances, applications, and functions.

• Physical and virtual appliances
• Applications
• Functions

Summarize cloud concepts and connectivity options.

• Network functions virtualization (NFV)
• Virtual private cloud (VPC)
• Network security groups
• Network security lists
• Cloud gateways
• Cloud connectivity options
• Deployment models
• Service models
• Scalability
• Elasticity
• Multitenancy

Explain common networking ports, protocols, services, and traffic types.

• Internet Protocol (IP) types
• Traffic types

Compare and contrast transmission media and transceivers.

• Wireless
• Wired
• Transceivers
• Connector types

Compare and contrast network topologies, architectures, and types.

• Mesh
• Hybrid
• Star/hub and spoke
• Spine and leaf
• Point to point
• Three-tier hierarchical model
• Collapsed core
• Traffic flows

Given a scenario, use appropriate IPv4 network addressing.

• Public vs. private
• Subnetting
• IPv4 address classes

Summarize evolving use cases for modern network environments.

• Software-defined network (SDN) and software-defined wide area network (SD-WAN)
• Virtual Extensible Local Area Network (VXLAN)
• Zero trust architecture (ZTA)
• Secure Access Secure Edge (SASE)/Security Service Edge (SSE)
• Infrastructure as code (IaC)
• IPv6 addressing

2.0 Network Implementation

Explain characteristics of routing technologies.

• Static routing
• Dynamic routing
• Route selection
• Address translation
• First Hop Redundancy Protocol (FHRP)
• Virtual IP (VIP)
• Subinterfaces

Given a scenario, configure switching technologies and features.

• Virtual Local Area Network (VLAN)
• Interface configuration
• Spanning tree
• Maximum transmission unit (MTU)

Given a scenario, select and configure wireless devices and technologies.

• Channels
• Frequency options
• Service set identifier (SSID)
• Network types
• Encryption
• Guest networks
• Authentication
• Antennas
• Autonomous vs. lightweight access point

Explain important factors of physical installations.

• Important installation implications
• Power
• Environmental factors

3.0 Network Operations

Explain the purpose of organizational processes and procedures.

• Documentation
• Life-cycle management
• Change management
• Configuration management

Given a scenario, use network monitoring technologies.

• Methods
• Solutions

Explain disaster recovery (DR) concepts.

• DR metrics
• DR sites
• High-availability approaches
• Testing

Given a scenario, implement IPv4 and IPv6 network services.

• Dynamic addressing
• Name resolution
• Time protocols

Compare and contrast network access and management methods.

• Site-to-site VPN
• Client-to-site VPN
• Connection methods
• Jump box/host
• In-band vs. out-of-band management

4.0 Network Security

Explain the importance of basic network security concepts.

• Logical security
• Physical security
• Deception technologies
• Common security terminology
• Audits and regulatory compliance
• Network segmentation enforcement

Summarize various types of attacks and their impact to the network.

• Denial-of-service (DoS)/ distributed denial-of-service (DDoS)
• VLAN hopping
• Media Access Control (MAC) flooding
• Address Resolution Protocol (ARP) poisoning
• ARP spoofing
• DNS poisoning
• DNS spoofing
• Rogue devices and services
• Evil twin
• On-path attack
• Social engineering
• Malware

Given a scenario, apply network security features, defense techniques, and solutions.

• Device hardening
• Network access control (NAC)
• Key management
• Security rules
• Zones

5.0 Network Troubleshooting

Explain the troubleshooting methodology.

• Identify the problem
• Establish a theory of probable cause
• Test the theory to determine the cause
• Establish a plan of action to resolve the problem and identify potential effects
• Implement the solution or escalate as necessary
• Verify full system functionality and implement preventive measures if applicable
• Document findings, actions, outcomes, and lessons learned throughout the process

Given a scenario, troubleshoot common cabling and physical interface issues.

• Cable issues
• Interface issues
• Hardware issues

Given a scenario, troubleshoot common issues with network services.

• Switching issues
• Route selection
• Address pool exhaustion
• Incorrect default gateway
• Incorrect IP address
• Incorrect subnet mask

Given a scenario, troubleshoot common performance issues.

• Congestion/contention
• Bottlenecking
• Bandwidth
• Latency
• Packet loss
• Jitter
• Wireless

Given a scenario, use the appropriate tool or protocol to solve networking issues.

• Software tools
• Hardware tools

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