Practice quizzes
Test yourself with free CCNA, Security+, Linux, cloud and Wi-Fi questions. Every quiz has 20 questions, an instant score and a short explanation for each answer. No sign-up, nothing to install.
CCNA practice quizzes
Five quizzes covering the main CCNA 200-301 topics, from network fundamentals to security.
CCNA · 20 questions
Network fundamentals
OSI and TCP/IP layers, TCP vs UDP, cabling, switches and routers, and well-known ports.
CCNA · 20 questions
Ip addressing and subnetting
Masks, CIDR, host counts, network and broadcast addresses, private ranges and IPv6 basics.
CCNA · 20 questions
Switching, vlans and stp
VLANs, access and trunk ports, 802.1Q, inter-VLAN routing, Spanning Tree, PortFast and port security.
CCNA · 20 questions
Routing and ospf
Routing tables, administrative distance, static and default routes, longest match and OSPF neighbours, cost and DR/BDR.
CCNA · 20 questions
Security fundamentals
Threats, ACLs, AAA, device hardening, wireless security and Layer 2 protections at CCNA level.
Security+ practice quizzes
Three quizzes on the core CompTIA Security+ areas: threats, cryptography and identity, and operations.
Security+ · 20 questions
Threats, vulnerabilities and attacks
Malware types, social engineering, password and application attacks, and threat actors.
Security+ · 20 questions
Cryptography and identity
Hashing, symmetric and asymmetric encryption, certificates, MFA, SSO and access control models.
Security+ · 20 questions
Security operations and governance
Incident response, logging and SIEM, vulnerability management, backups, risk and policies.
More topics quizzes
Linux, cloud (AWS and Azure) and Wi-Fi: useful for Network+, cloud and support roles.
More topics · 20 questions
Linux basics quiz
Files and permissions, users, processes, services, networking commands and logs on Linux.
More topics · 20 questions
Cloud fundamentals quiz (AWS and Azure)
Service models, shared responsibility, regions, identity, networking and storage security in AWS and Azure.
More topics · 20 questions
Wi-Fi and wireless quiz
Bands and channels, standards, security, signal strength and common wireless problems.
Learn the topics first
Missed a few? Read the notes, then come back and try again. Your best score is saved on this device only.