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Coding Challenges
5,893 curated questions across every arena — browse by topic, then jump into a live 3-minute battle to put them to the test.
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Clear topic filter- Multiple ChoiceBeginner
AES
cybersecbeginner - Multiple ChoiceBeginner
Asymmetric Encryption
cybersecbeginner - Multiple ChoiceBeginner
Ciphertext
cybersecbeginner - Multiple ChoiceBeginner
Hashing: Property
cybersecbeginner - Multiple ChoiceBeginner
Plaintext
cybersecbeginner - Multiple ChoiceBeginner
RSA
cybersecbeginner - Multiple ChoiceBeginner
SHA-256
cybersecbeginner - Multiple ChoiceBeginner
Symmetric Encryption
cybersecbeginner - Multiple ChoiceBeginner
Air Gap
cybersecbeginner - Multiple ChoiceBeginner
Antivirus: Signature
cybersecbeginner - Multiple ChoiceBeginner
DLP: Purpose
cybersecbeginner - Multiple ChoiceBeginner
DMZ: Purpose
cybersecbeginner - Multiple ChoiceBeginner
EDR: Purpose
cybersecbeginner - Multiple ChoiceBeginner
Honeypot
cybersecbeginner - Multiple ChoiceBeginner
IDS vs IPS
cybersecbeginner - Multiple ChoiceBeginner
NAC: Purpose
cybersecbeginner - Multiple ChoiceBeginner
SIEM: Purpose
cybersecbeginner - Multiple ChoiceBeginner
WAF: Purpose
cybersecbeginner - Multiple ChoiceBeginner
Linux: Packet Filtering
cybersecbeginner - Multiple ChoiceBeginner
The Kernel
cybersecbeginner - Multiple ChoiceBeginner
Linux: Service Manager
cybersecbeginner - Multiple ChoiceBeginner
Malware: Botnet
cybersecbeginner - Multiple ChoiceBeginner
Scareware
cybersecbeginner - Multiple ChoiceBeginner
Malware: Trojan
cybersecbeginner - Multiple ChoiceBeginner
Malware: Virus
cybersecbeginner - Multiple ChoiceBeginner
Malware: Worm
cybersecbeginner - Multiple ChoiceBeginner
Defense: HSTS
cybersecmcqbeginner - Multiple ChoiceBeginner
ARP: Function
cybersecbeginner - Multiple ChoiceBeginner
DHCP: Function
cybersecbeginner - Multiple ChoiceBeginner
DNS: Function
cybersecbeginner - Multiple ChoiceBeginner
Firewall: Basic Function
cybersecbeginner - Multiple ChoiceBeginner
Ping Command
cybersecbeginner - Multiple ChoiceBeginner
Private IP Range
cybersecbeginner - Multiple ChoiceBeginner
IPv4 vs IPv6
cybersecbeginner - Multiple ChoiceBeginner
Localhost IP
cybersecbeginner - Multiple ChoiceBeginner
MAC Address
cybersecbeginner - Multiple ChoiceBeginner
NAT: Purpose
cybersecbeginner - Multiple ChoiceBeginner
OSI: Layer 2
cybersecbeginner - Multiple ChoiceBeginner
OSI: Layer 3
cybersecbeginner - Multiple ChoiceBeginner
OSI: Layer 4
cybersecbeginner - Multiple ChoiceBeginner
OSI: Layer 7
cybersecbeginner - Multiple ChoiceBeginner
OSI Model: Layers
cybersecbeginner - Multiple ChoiceBeginner
DNS Port
cybersecbeginner - Multiple ChoiceBeginner
FTP Ports
cybersecbeginner - Multiple ChoiceBeginner
Default Port: HTTP
cybersecbeginner - Multiple ChoiceBeginner
Default Port: HTTPS
cybersecbeginner - Multiple ChoiceBeginner
RDP Port
cybersecbeginner - Multiple ChoiceBeginner
SMTP Port
cybersecbeginner - Multiple ChoiceBeginner
Default Port: SSH
cybersecbeginner - Multiple ChoiceBeginner
Router: Function
cybersecbeginner - Multiple ChoiceBeginner
SSL vs TLS
cybersecbeginner - Multiple ChoiceBeginner
Subnet Mask
cybersecbeginner - Multiple ChoiceBeginner
TCP vs UDP
cybersecbeginner - Multiple ChoiceBeginner
Telnet vs SSH
cybersecbeginner - Multiple ChoiceBeginner
VPN: Purpose
cybersecbeginner - Multiple ChoiceBeginner
Recon: DNS Enum
cybersecbeginner - Multiple ChoiceBeginner
Recon: Port Scanning
cybersecbeginner - Multiple ChoiceBeginner
OSINT: Definition
cybersecbeginner - Multiple ChoiceBeginner
Social Engineering
cybersecbeginner - Multiple ChoiceBeginner
Recon: WHOIS
cybersecbeginner
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Every challenge here is drawn from the live Code Royale pool. Review a question, then head to the arena to answer under pressure against a real opponent — 3-minute matches, Elo ranking, and badge tiers on the line.