How to Become a Network Administrator

Network administration is one of the most stable and consistently in-demand roles in IT. Every organization with more than a handful of employees needs someone to manage its network infrastructure, and that need doesn’t go away when budgets tighten or tech trends shift.

If you’re considering network administration as a career path, here’s an honest look at what the job involves, what employers actually require, and how to get there.

What Does a Network Administrator Do?

Network administrators design, implement, and maintain the network infrastructure that keeps organizations connected internally and externally. In practice, that means:

• Configuring and managing routers, switches, firewalls, and wireless access points
• Monitoring network performance and troubleshooting connectivity issues
• Managing VPNs and remote access solutions
• Implementing and maintaining network security controls
• Documenting network topology and configurations
• Planning capacity and supporting infrastructure upgrades
• Coordinating with vendors and ISPs

The scope varies significantly by organization size. At a small company, the network administrator may also function as the sysadmin, help desk lead, and security contact. At a large enterprise or government contractor, network administration is a specialized role that often involves a dedicated team.m.

Network Administrator vs. Network Engineer

These titles are often used interchangeably, but there’s a general distinction worth understanding:

	Network Administrator	Network Engineer
Primary Focus	Day-to-day management and maintenance	Design, architecture, and implementation
Scope	Operational	Strategic + operational
Experience Level	Entry to mid-level	Mid to senior
Typical Certs	CompTIA Network+, CCNA	CCNP, CCIE, advanced Cisco

Most network engineers start as network administrators. The path from admin to engineer is primarily a function of experience, certifications, and scope of responsibility.

What Employers Require

Entry-level network administrator job postings typically list some combination of the following:

Certifications:

• CompTIA Network+ (the baseline; many job descriptions list this explicitly)
• Cisco CCNA (common, especially in enterprise and government environments)
• CompTIA Security+ (increasingly common, as network and security responsibilities overlap)

Technical Knowledge:

• TCP/IP, subnetting, and routing protocols (OSPF, BGP, EIGRP)
• VLAN configuration and management
• Firewall rules and access control lists
• VPN setup and troubleshooting
• Network monitoring tools (SolarWinds, PRTG, Wireshark)
• Wireless networking (802.11 standards, enterprise Wi-Fi configuration)

Experience:

Entry-level roles often list 0–2 years of experience and accept certification and hands-on lab work as substitutes. Candidates with a home lab, a network simulation environment (Cisco Packet Tracer or GNS3), or structured lab coursework from a training program are competitive with candidates who have limited professional experience.

The Certification Path

Step 1: CompTIA Network+

Network+ is the vendor-neutral foundation. It validates that you understand networking concepts, the OSI model, IP addressing, routing, switching, wireless, and network troubleshooting well enough to work in a real environment. Most entry-level network admin job listings either require or prefer the Network+ certification.

Step 2: Cisco CCNA

CCNA is the industry standard for Cisco environments, meaning it covers most enterprise networks. It goes deeper than Network+ on routing, switching, and Cisco-specific configuration. Holding both Network+ and CCNA makes a candidate significantly more competitive for mid-tier and enterprise roles.

Step 3: CompTIA Security+ (recommended)

As network security becomes increasingly inseparable from network administration, Security+ has become a common addition to the network admin credential stack. It’s also required for DoD 8570-compliant roles and is relevant for anyone targeting San Diego’s defense contractor market.

Advanced (mid-career): CompTIA Network+, CCNP, CE, Palo Alto PCNSA/PCNSE for firewall-focused roles.

What Network Administrators Earn

Level	National Median	San Diego
Entry-Level	~$55,000–$70,000	~$65,000–$80,000
Mid-Level	~$75,000–$90,000	~$85,000–$100,000
Senior/Lead	~$95,000–$115,000	~$105,000–$130,000

San Diego’s concentration of defense contractors, biotech firms, and telecom companies creates consistent demand for network professionals. Cleared network administrators, those with active DoD security clearances, command a significant premium above these ranges.

How Long Does It Take to Get a Network Admin Job?

For someone starting from scratch with no IT background, a realistic timeline looks like this:

• Months 1–3: Build foundational IT knowledge; pursue CompTIA A+ if no prior background
• Months 3–6: Study for and pass CompTIA Network+
• Months 6–9: Pursue CCNA; build lab experience with Packet Tracer or physical equipment
• Months 9–12: Begin applying; add Security+ if targeting government or contractor roles

Candidates in structured programs with built-in lab time and instructor support typically move through this timeline faster than fully self-directed learners, because the lab work and curriculum are sequenced for job readiness rather than exam coverage alone.

Network Administrator Frequently Asked Questions