ITPEC FE Morning April 2020 Question 45
ITPEC FE Morning April 2020 — Question 45 of 80
SSL/TLS Handshake Sequence — order the steps of establishing an SSL/TLS connection.
Correct sequence: 5 → 1 → 4 → 3 → 2
- •Step 5: Browser initiates connection to the HTTPS server
- •Step 1: Server sends its SSL/TLS certificate to the browser
- •Step 4: Browser verifies the certificate; if trusted, requests encrypted connection
- •Step 3: Server sends acknowledgment to start encrypted connection
- •Step 2: Encrypted communication begins
Why not others:
- (a) 1→5→2→3→4 — server cannot send certificate before browser connects
- (b) 1→5→4→3→2 — same issue: step 1 cannot come first
- (c) 5→1→2→3→4 — encrypted communication (2) cannot start before certificate verification (4) and acknowledgment (3)
Key rule: The flow is: connect → receive cert → verify cert → agree on encryption → communicate.
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