1 / 5
The negotiation where client and server agree on protocol version and cipher and exchange keys is the TLS ___.
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The TLS handshake establishes the secure session; most TLS errors surface here as a handshake failure.
2 / 5
A browser error that intermediate certificates are missing points to a broken certificate ___.
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The certificate chain links the leaf cert to a trusted root via intermediates; missing intermediates cause 'unable to verify' errors.
3 / 5
An 'NET::ERR_CERT_DATE_INVALID' error usually means the certificate has ___.
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This error indicates the certificate is outside its validity window — most often it expired and was not renewed.
4 / 5
Hosting multiple HTTPS sites on one IP relies on ___ to tell the server which certificate to present.
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Server Name Indication (SNI) sends the requested hostname during the handshake so the server can return the matching certificate.
5 / 5
When client and server share no common encryption algorithm, the handshake fails with a ___ mismatch.
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A cipher (suite) mismatch occurs when there is no overlap between the algorithms each side supports, so no secure channel can be agreed.