Subnetting / IP Addressing
Also written as Subnetting, IP Addressing, IP Subnetting, CIDR, IPv4, IPv6, DHCP, NAT, VLSM
Planning the addresses devices use on a network: splitting address ranges into smaller blocks called subnets (written like 10.0.1.0/24), handing addresses out automatically (DHCP), and translating private addresses to public ones (NAT). IPv6 is the newer, far larger address system.
Think of it like
Numbering the houses in a new township: each block gets its own range, so every house has a unique address and the post finds it.
Junior or senior?
A standard network interview topic, often tested with a quick calculation.
Senior sounds like
Has planned the addressing for new sites or a cloud network without clashes, and fixed problems caused by overlapping ranges.
Ask them
“Have you planned the IP addressing for a new site or cloud network? How did you avoid clashing with the ranges already in use?”
Reading Subnetting / IP Addressing on a resume
- Table-stakes
- Most people in this field list Subnetting / IP Addressing, so its presence tells you little, and opening a screen with it can make the call sound junior. Ask what they built with it instead.
Sourcing for Subnetting / IP Addressing
Every way it's written
("Subnetting" OR "IP Addressing" OR "IP Subnetting" OR "CIDR")Paste into LinkedIn Recruiter, Naukri or your ATS. Combine with a job title and location.
Wider net, with accepted substitutes
("Subnetting" OR "IP Addressing" OR "IP Subnetting" OR "CIDR" OR "IPv4" OR "IPv6")Includes skills a hiring manager would usually accept instead. Use it when the exact search runs dry.
Job titles to search alongside it
Network Engineer · Network Administrator · System Administrator · IT Infrastructure Engineer · Network Security Engineer · NOC Engineer · Windows Administrator · Linux Administrator
Where this talent works in India — Networking & IT Infrastructure
Target companies that build networking gear or run large networks and data centres themselves: equipment makers, telecom operators, data-centre operators and infrastructure-services firms. Help-desk-heavy outsourcing contracts use the same titles with far less design work, so ask who designed the network, not just who kept it running.
For example: Cisco, Juniper Networks (HPE), HPE Aruba Networking, Arista Networks, Extreme Networks, F5, Infoblox, Nokia.