220-801 · Question #809
Which of the following protocols encrypt communication? (Select TWO).
The correct answer is A. HTTPS E. SSH. HTTPS and SSH are the two protocols in the list that provide built-in encryption for all data in transit. The other options transmit data in cleartext.
Question
Which of the following protocols encrypt communication? (Select TWO).
Options
- AHTTPS
- BTELNET
- CSMTP
- DDNS
- ESSH
How the community answered
(48 responses)- A90% (43)
- B6% (3)
- C2% (1)
- D2% (1)
Why each option
HTTPS and SSH are the two protocols in the list that provide built-in encryption for all data in transit. The other options transmit data in cleartext.
HTTPS uses TLS (Transport Layer Security) to encrypt all HTTP traffic between a client and web server, protecting data confidentiality and integrity.
Telnet transmits all data, including usernames and passwords, in plaintext over the network, making it vulnerable to packet sniffing.
SMTP in its base form transmits email in plaintext; while STARTTLS can add encryption opportunistically, SMTP itself is not an encrypting protocol.
DNS (Domain Name System) transmits queries and responses in plaintext by default; DNS over HTTPS (DoH) or DNS over TLS (DoT) are separate extensions not implied by plain DNS.
SSH (Secure Shell) encrypts the entire session including authentication credentials and all data exchanged during remote shell access or tunneling.
Concept tested: Identifying protocols that provide encryption
Source: https://learn.microsoft.com/en-us/windows-server/administration/openssh/openssh_overview
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