Computer Networks, unit: Network Security Basics. Core concepts, terminology, and worked-example cues a college student meets for this unit, building on prior units without repeating them. Front: a term, concept, or short problem cue. Back: the definition, explanation, or answer.
38 cards · basic cards · AI-written, checked twice. Edit anything.
- What is network security concerned with?
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Protecting data and resources from unauthorized access, misuse, or disruption- What is a firewall?
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A security system that monitors and controls incoming and outgoing network traffic based on rules- What is encryption?
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Converting data into a coded form to prevent unauthorized access- What is symmetric encryption?
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Encryption using the same key for both encrypting and decrypting data- What is asymmetric encryption?
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Encryption using a public key to encrypt and a different private key to decrypt- What is TLS (Transport Layer Security)?
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A protocol that encrypts data in transit, commonly securing HTTPS connections- What is a VPN (Virtual Private Network)?
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A secure, encrypted connection over a public network, simulating a private network- What is a Denial of Service (DoS) attack?
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An attack that overwhelms a system with traffic to make it unavailable to legitimate users- What is a Distributed Denial of Service (DDoS) attack?
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A DoS attack launched from many distributed sources simultaneously- What is a man-in-the-middle attack?
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An attack where an attacker secretly intercepts and possibly alters communication between two parties- What is phishing?
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A social engineering attack that tricks users into revealing sensitive information- What is malware?
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Malicious software designed to damage, disrupt, or gain unauthorized access to a system- What is a digital certificate used for?
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Verifying the identity of a website or entity, typically issued by a trusted certificate authority- What is a certificate authority?
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A trusted organization that issues and verifies digital certificates- What is public key infrastructure (PKI)?
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A system of certificates, keys, and authorities that manages digital identity and encryption
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