This is the section where round two of the screen actually happens, the closing gate before an
interview hits your inbox. A recruiter takes their time here, and even at that, the current
role still drives around 95% of the result.
That tracks: nothing proves what you can run in production today like the seat you sit in
right now. To earn a "yes", the section has to hit every entry on the
Network Admin role profile, one bullet per domain you named in Domain
Expertise above. Every bullet has to come off something you genuinely held in production,
never a ticket that landed on your queue.
1
Switch & Router Operations
You run the switches and routers day to day. Hiring managers read steady hands-on operations behind it,
not "have my CCNA", so this is where a network admin proves out. Talk about how you used VLAN
provisioning and firmware lifecycle work, on Cisco IOS and Meraki, to keep devices on baseline and
utilization healthy.
Techniques
VLAN provisioning
Port-level changes (MACs)
Firmware lifecycle
Trunk & STP ops
Tools
Cisco IOS / NX-OS
Cisco Meraki
Aruba ArubaOS
Metrics
Devices under management
Firmware on baseline
Switch-port utilization
2
IP/DNS/DHCP Services Operations
You operate IPAM, DHCP, and DNS so nothing goes dark. When DNS or DHCP breaks, everything looks broken,
so hiring managers want to see you run it cleanly. Show them how you used IPAM lifecycle and DHCP scope
operations, in Infoblox and Windows DNS, to hold DNS query success and catch address conflicts early.
Techniques
IPAM lifecycle
DHCP scope ops
DNS record management
Subnetting
Tools
Infoblox, BlueCat
BIND, Windows DNS
ISC DHCP, Windows DHCP
Metrics
Subnets under management
DNS query success rate
Address conflicts caught
3
Firewall & VPN Operations
You handle the firewall and VPN changes that never stop. Rule sprawl is hard to keep safe, so hiring
managers want proof you tighten it, not just add to it. Point out how you used rulebase cleanup and VPN
onboarding, on Palo Alto Panorama and AnyConnect, to onboard users and clear stale rules.
Techniques
Firewall rule changes
VPN onboarding
Rulebase cleanup
Certificate lifecycle
Tools
Palo Alto Panorama
Cisco ASA / FTD
Cisco AnyConnect, FortiClient
Metrics
Rules per quarter
VPN users onboarded
Stale rules cleared
4
Monitoring, Alerting & Reporting
You watch the network and get alerted before a problem spreads. Hiring managers look here to see whether
you catch issues on the dashboard, or whether the first sign is a flood of tickets. Mention how you used
SNMP and syslog monitoring with tuned alerts, in SolarWinds and PRTG, to quiet alert noise and cut mean
time to acknowledge.
Techniques
SNMP / syslog monitoring
Alert tuning
Capacity reporting
Dashboard ops
Tools
SolarWinds, PRTG
LibreNMS, Nagios
Grafana, Prometheus
Metrics
Alert noise reduced
MTTA cut
Uptime reported
5
Tier-2 Troubleshooting & Incident Response
You crack the hard tickets tier-1 can't. Tickets resolved and MTTR are numbers a hiring manager can
check, so a real fix beats "escalated to the vendor". Walk them through how you used packet
capture and path testing, in Wireshark and ThousandEyes, to resolve tickets and cut MTTR.
Techniques
Packet capture & analysis
Trace & path testing
Root-cause analysis
Runbook ops
Tools
Wireshark, tcpdump
ThousandEyes
PagerDuty, Opsgenie
Metrics
Tickets resolved
MTTR cut
Escalations reduced
6
Wireless Operations
You tune the wireless so coverage holds and roaming works. Two things ride on it for a hiring manager:
coverage with no dead spots, and roaming that doesn't drop calls. Lay out how you used RF channel
tuning and site surveys, on Meraki and Ekahau, to lift coverage and close roaming issues.
Techniques
AP firmware lifecycle
RF channel tuning
Site surveys
SSID & auth ops
Tools
Cisco Meraki, Aruba
Cisco WLC
Ekahau, AirMagnet
Metrics
APs operated
Coverage uplifted
Roaming issues closed
7
Documentation & Change Management
You control change with ITIL, current diagrams, and runbooks. Good change records are what let the next
person work safely, so a hiring manager reads them as someone who protects the team. Spell out how you
used ITIL change management and a kept source of truth, in ServiceNow and NetBox, to hold the
change-failure rate down.
Techniques
ITIL change management
Network diagrams
Runbook libraries
Source-of-truth
Tools
ServiceNow, Jira
Confluence, Notion
Visio, Lucidchart, NetBox
Metrics
Changes per month
Change-failure rate
Runbooks maintained
8
Automation & Tooling
You automate the repetitive changes off your plate. The admins who script the routine free themselves
for the real problems, so this is a strong signal on the page. Tell them how you used bulk config push
and backup automation, in Ansible and Oxidized, to save hours weekly and bring drift incidents down.
Techniques
Bulk config push
Templated playbooks
Backup automation
Inventory updates
Tools
Ansible
Netmiko, Python
RANCID / Oxidized
Metrics
Hours saved weekly
Devices under code
Drift incidents down