(ISC)2
CERTIFIED-IN-CYBERSECURITY · Question #54
Which protocol uses a three-way handshake to establish a reliable connection?
The correct answer is C. TCP. TCP uses a three-way handshake to establish a reliable connection by exchanging three packets with theSYN, SYN/ACK, and ACK flags. SMTP uses a two-way handshake. Neither UDP nor SNMP require a handshake phase.
Network Security
Question
Which protocol uses a three-way handshake to establish a reliable connection?
Options
- AUDP
- BSNMP
- CTCP
- DSMTP
How the community answered
(33 responses)- A6% (2)
- B6% (2)
- C85% (28)
- D3% (1)
Explanation
TCP uses a three-way handshake to establish a reliable connection by exchanging three packets with theSYN, SYN/ACK, and ACK flags. SMTP uses a two-way handshake. Neither UDP nor SNMP require a handshake phase.
Topics
#Networking Protocols#TCP/IP#Three-way Handshake#Reliable Connection
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