Network Security (AQA GCSE Computer Science): Flashcards
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15 cards from this deck
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Practise the cards
15 cards from this deck
Network security main goal
Network security main goal
Ensure only authorized users can access network resources
Authentication definition
Authentication definition
Verifying users are who they claim to be
Most common authentication method
Most common authentication method
Username and password
Purpose of account lockout
Purpose of account lockout
Stops repeated password guessing after failed attempts
Possession-based authentication uses
Possession-based authentication uses
Something only legitimate user possesses (device, key, code)
Two biometric authentication examples
Two biometric authentication examples
Fingerprint scanners and voice recognition
Two-factor authentication
Two-factor authentication
Combines two different authentication methods for enhanced security
Purpose of encryption
Purpose of encryption
Transforms data into unreadable format to protect it
Caesar cipher method
Caesar cipher method
Shifts letters by fixed number of positions in alphabet
Symmetric encryption key
Symmetric encryption key
Uses same key for encrypting and decrypting
Asymmetric encryption keys
Asymmetric encryption keys
Uses public key to encrypt, private key to decrypt
Firewall function
Firewall function
Monitors and controls incoming/outgoing network traffic
MAC address definition
MAC address definition
Unique identifier for network interface controller
MAC address size in bits
MAC address size in bits
48 bits
White list MAC filtering
White list MAC filtering
Only approved devices on list can connect to network