CompTIA Network+

Network+: Overview of Domains

September 28, 2018 by Daniel Brecht

Are you looking to move ahead in a networking job? Are you interested in a career with steady and ongoing opportunities? Then the CompTIA’s Network+ vendor-neutral certification might be a good choice. The credential can be a sure help to a successful network engineer or network administrator career.

According to the official website, the certification “helps develop a career in IT infrastructure covering troubleshooting, configuring, and managing networks,” which are duties central to those roles. The program helps professionals develop and update skill sets that CompTIA believes are essential for qualified IT professionals to master in order to be successful in a variety of entry-level and intermediate networking positions.

The Network+ certification can also be used as a stepping-stone to more advanced networking credentials, allowing a professional to stand out in the field and increase his or her credibility as an engineer or technician in network support and/or administration. From a job perspective, the CompTIA Network+ certification is able to open doors to plenty of employment opportunities. In fact, when evaluating prospective IT candidates, employers frequently look to this certification as an important criterion to fill network-related job roles.

In order to meet the demands of a field in constant evolution, the certification is updated periodically to reflect the skills and duties required today. In fact, the latest version of CompTIA Network+ was released in March 2018, when the new N10-007 replaced the older version (N10-006). The new test provides learning objectives that focus more on security and network resiliency. However, test takers should familiarize themselves with all new domain topics to be better prepared to take and pass the credential exam.

What Domains Are Covered on the Updated Network+ Exam?

 Here’s what you need to know about the N10-007 exam.

The older exam version concentrated mostly on technical aspects such as the configuration and management of network devices, as well as technologies including the cloud, virtualization and mobile devices. N10-007, instead, expands the focus to include a stronger emphasis on security and how to create wired and wireless networks that are not only efficient but also resilient. It also concentrates on the necessary interaction of network professionals with IT security staff. Newest advances in cloud computing and virtualizations are also covered, together with their proper implementation and best practices.

Therefore, reviewing these topics to pass the test and obtain the credential can help practitioners to understand today’s challenges for a network professional and the knowledge and skills that employers expect from them.

Exam Objectives (N10-006 vs N10-007)

Because CompTIA Network+ is accredited by the American National Standards Institute (ANSI) to show compliance with the International Organization for Standardization (ISO) 17024 Standard, the exam objectives undergo regular reviews and updates. As such, this enables one to stay current with new and evolving technologies and remain a sought-after network expert.

Figure 1: Old Exam Code (N10-006) New Exam Code (N10-007)

Domain 1 — Networking Concepts

The first domain concentrates on a detailed review of basic networking topics and terminology. In fact, it covers:

  1. Ports and protocols and their use: IP, UDP, TCP, SSH 22, HTTP 80, NTP 123, POP 100 …
  2. Devices, applications, protocols and services and their OSI layers: Layers 1 through 7, Physical through Application.
  3. Explaining routing and switching
    1. Properties of network traffic: Broadcast, unicast, MTU…
    2. Segmentation and interface properties: VLAN, DMZ, port mirroring
    3. Routing: Types like static and dynamic, protocols and related concepts like IPv6 and its addressing, tunneling, as well as performance, port forwarding, access lists
  4. Configuring IP addressing components in real-life scenarios, including subnetting and address assignment.
  5. Compare network topologies, types and technologies: To include questions on types of network like LAN, WLAN, CAN, SAN, wireless and wired options and IoT technology
  6. Choosing the best configuration in a given scenario: Covering topics like cellular technologies, 802.11 standards, frequencies and channels
  7. Cloud concepts: Services like SaaS and IaaS, delivery models and a strong emphasis on security considerations
  8. Network services: DNS concepts as well as DHCP, NTP, IPAM

Domain 2 — Infrastructure

This domain concentrates specifically on the proper creation of networks through correct cabling, positioning of devices and use of appropriate technologies.

  1. Appropriate cabling solutions in given scenarios: Covers all about cables from media type to connectors, termination points and Ethernet deployment standards
  2. Installation and configurations of devices: It covers essential topics like hubs, firewalls, routers, modems, bridges
  3. Advanced networking devices: Load balance, IDS/IPS, proxy servers, content filters, VoIP
  4. Virtualization and network storage: Virtual components like switches, routers and firewalls as well as NAS and SAN storage and connection types
  5. WAN technologies: Transmission mediums, service type and characteristics

Domain 3 — Network Operations

Down to 17% weight from the 20% of the previous exam version, this domain addresses topics like disaster recovery, business continuity, proper documentation and policies as well as monitoring and scanning.

  1. Appropriate documentation and diagrams: Logical and physical diagrams, symbols, labeling, inventory
  2. Business continuity and disaster recovery: Availability (fault tolerance, load balancing, clustering), power management, recovery sites, backup types
  3. Scanning, monitoring and patching: Processes (port scanning, logs review, traffic analysis, vulnerability scanning), event management and metrics
  4. Remote access methods in given scenarios: VPNs, Telnet, SSH, HTTPS, Remote file access.
  5. Policies and best practices: Policies on passwords, remote access, incident response and safety procedures, as well as BYOD and data loss prevention

Domain 4 — Network Security

The weight of this topic was raised to 20% from 18% in the previous test version to signify a stronger focus on security topics. This domain covers subjects like physical security devices, how to secure networks, common attacks and their mitigation.

  1. Physical security devices
    • For detection: Tags for asset tracking, video surveillance, tamper detection
    • For protection: Biometrics, FOBs, badges, locks
  2. Authentication and access control: From single sign-on and certificates to Kerberos, multi-factor authentication and ways to implement access control (NAC, port security)
  3. Securing a wireless network: Geofencing, WPA, authentication and authorization (EAP, MAC filtering)
  4. Networking attacks: All common attacks today including DoS, ransomware, phishing, brute-forcing, spoofing
  5. Network device hardening: A list of best practices including frequent patching, choosing the right password, file hashing, disabling unused ports
  6. Mitigation techniques: Switchport protection, segmentation, role separation, penetration testing, use of honeypots

Domain 5 — Network Troubleshooting and Tools

A straightforward domain that covers topics related to the role of professionals in discovering network issues, and the tools at their disposals.

  1. Network troubleshooting: Identification of the problem and possible cause, devise a plan of action and implement countermeasure, verify results and prepare detailed documentation
  2. Tools
    1. Hardware: Spectrum analyzer, light meter, tone generator, loopback adapter
    2. Software: Port scanner, packet sniffer, Wi-Fi analyzer, bandwidth speed tester, command line option (ipconfig, ping, nslookup, nmap)
  3. Troubleshoot common wired connectivity and performance issues: Attenuation, latency, bottlenecks, VLAN mismatch, bad cables
  4. Troubleshoot common wireless connectivity and performance issues: To include interference, reflection, refraction, wrong SSID, distance limitation
  5. Troubleshoot common network service issues: Incorrect gateway or netmask, blocked TCP/UDP ports, duplicate MAC addresses, expired IP addresses


To assist candidates as they take the next step in their career, CompTIA’s newest Network+ test (N10-007) “places greater emphasis on network implementation and support, and includes expanded coverage of wireless networking topics,” as per the CompTIA Network+ Review Guide Exam N10-007, 4th Edition. In addition, the exam covers advances in skill sets “needed to install, configure, and troubleshoot today’s basic networking hardware peripherals and protocols,” as mentioned in the CompTIA Network+ Practice Tests (Exam N10-007), 1st Edition. To prepare for the test, it is also possible to obtain the CompTIA Network+ Certification Kit, 5th Edition.

Professionals also have great online options to prepare for the exam. Students can take InfoSec Institute’s authorized CompTIA Network+ boot camp or online training course for high-quality, updated Network+ exam preparation. In addition, those preparing for entry-level network technician jobs will find InfoSec Institute’s Authorized CompTIA A+ and Network+ boot camp (an 8-day accelerated, in-depth course) valuable. This is an option that has taught students knowledge they could apply to careers in a wide array of technical and support skills which ultimately “leads to career advancement, personal improvement, skills enhancement, and higher salaries.”

In a rapidly-changing IT world, keeping skills up-to-date can be achieved by continuing education and the acquiring of appropriate certifications. A vendor-neutral option like the CompTIA Network+, which is role-based and covers networking technologies across all vendors and solutions, can be the right solution for professionals to address any knowledge gaps and prove their worth to potential employers.



  1. CompTIA Network+ (Exam Code N10-006 & N10-007), CompTIA
  2. CompTIA Certification Testing, Pearson VUE
  3. Official CompTIA Study Guide for Network+, CompTIA
  4. 10 Things to Watch for from CompTIA in 2018, CompTIA
  5. Your Next Move: Network Engineer, CompTIA
  6. Your Next Move: Network Administrator, CompTIA
  7. Best Computer Networking Certifications 2018, Business News Daily
Posted: September 28, 2018
Articles Author
Daniel Brecht
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Daniel Brecht has been writing for the Web since 2007. His interests include computers, mobile devices and cyber security standards. He has enjoyed writing on a variety of topics ranging from cloud computing to application development, web development and e-commerce. Brecht has several years of experience as an Information Technician in the military and as an education counselor. He holds a graduate Certificate in Information Assurance and a Master of Science in Information Technology.

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