Test your knowledge of advanced IT abbreviations: DKIM, SPF, DMARC, mTLS, JWT, PKCE, SAML, OIDC, RBAC, ABAC in professional security and authentication contexts.
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A developer says: 'We need to add DKIM to our outbound mail server.' What does DKIM stand for?
DKIM stands for DomainKeys Identified Mail. It adds a cryptographic signature to outgoing emails, allowing receiving servers to verify the message was sent by an authorised domain and was not altered in transit.
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During a security review, the engineer says: 'Our SPF record is misconfigured.' What is SPF?
SPF stands for Sender Policy Framework. It is a DNS record that specifies which mail servers are authorised to send email on behalf of a domain, helping prevent email spoofing.
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The architect recommends: 'We should implement DMARC to tie together our SPF and DKIM policies.' What does DMARC mean?
DMARC stands for Domain-based Message Authentication, Reporting and Conformance. It builds on SPF and DKIM by specifying what to do with emails that fail authentication checks and provides reporting to domain owners.
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The security team says: 'Service-to-service calls must use mTLS.' What does mTLS stand for?
mTLS stands for Mutual TLS (Transport Layer Security). Unlike standard TLS where only the server presents a certificate, in mTLS both the client and the server authenticate each other with certificates, which is common in zero-trust architectures.
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The backend developer explains: 'We issue a JWT after login and the client sends it in every request.' What is JWT?
JWT stands for JSON Web Token. It is a compact, URL-safe token format used to represent claims between two parties. A JWT typically contains a header, payload (claims), and a cryptographic signature.