The exam
CCST Networking is Cisco's entry point to its certification programme: it certifies that a technician understands how a network operates — the devices, media and protocols that carry traffic — and can carry out first-line support on one. The 100-150 exam covers six domains: standards and concepts (the OSI and TCP/IP models, bandwidth against throughput, network types and topologies, cloud against on-premises, and the common application protocols), IPv4 and IPv6 addressing and subnet formats, endpoints and media types (cables, connectors, Wi-Fi against cellular against wired, and setting up connectivity on Windows, Linux, macOS, Android and iOS), infrastructure (device status lights, cabling to a diagram, ports, and basic routing and switching concepts), diagnosing problems (help-desk methodology and ticketing, Wireshark captures, ping, ipconfig, traceroute and nslookup, remote-access methods, and the Cisco show commands), and security (how firewalls filter, the CIA triad, AAA, MFA, certificates, malware and phishing, and configuring WPA2 or WPA3 on a small-office router). The sitting is 50 minutes and forward-only. Cisco publishes neither an item count, a passing score nor domain percentages for this exam, so those figures in this guide are our estimates.
Who it is for
Aimed at people at the very start of a networking career — entry-level network technicians and customer-support technicians, networking students, and interns — with under a year of hands-on experience. Cisco targets secondary and immediate post-secondary students as well as entry-level IT and networking professionals, and describes the successful candidate as having at least 150 hours of instruction and hands-on experience. There is no formal prerequisite. It expects familiarity with a computer and a command prompt rather than fluency in the Cisco CLI: you should be able to read a host's IP configuration, run ping and traceroute, recognise a cable and a connector, and follow an engineer's instructions on site. CCST Networking is the usual step before CCNA (200-301), which revisits the same subjects at configuration depth.
What it covers
Your readiness map in the app is organised the same way, so what you see here is exactly what you study against.
What Preppio gives you
Across every domain above, in 5 formats: concept, scenario, ordering, multi-select, matching. Each one explains why the right answer is right and every distractor wrong.
Per domain, whether you are ready, weak, or not started — the same domains and weights as the exam itself.
Your study partner. He tracks where you are weak and drills exactly that, instead of serving you what you already know.
Try one
Answer on the page. The explanation appears when you submit; use Next to move through the formats.
Sample 1 · Concept
A network team wants to upgrade the LAN cabling from copper to fiber without changing any of the IP addressing or applications used by the hosts. Which concept explains why this upgrade is possible without disrupting upper-layer operation?
Pick one, then submit.
Study links
FAQ
40 questions in 50 minutes.
75%, a scaled score of 750.
6 domains, weighted as the exam weights them: Standards and Concepts (20%), Addressing and Subnet Formats (12%), Endpoints and Media Types (16%), Infrastructure (20%), Diagnosing Problems (20%) and Security (12%). Your readiness map in the app is organised by the same domains, so what you study against is what the exam tests.
Five formats: concept, scenario, ordering, multi-select and matching. The practice questions use every one of them, and the sample on this page shows one of each.
100-150 is on the Single, Dual and All Access plans. You start on the free tier and add it from the plan picker inside the app. Three fundamentals exams (AZ-900, CLF-C02 and CDL) are always free, and the sample on this page is free to try.
Every question is generated from the exam's published objectives, then checked for accuracy, answer key and explanation before it is served. Nothing is copied from any exam, questions rotate by how often they have been seen, and they are retired when the objectives change.
