ISC2 CC Network Security Practice Question
An organization wants to securely manage network devices from remote locations. Which of the following protocols should be used for command-line access?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SSH
SSH (port 22) encrypts all traffic, including passwords and commands, making it secure for remote administration. Telnet transmits data in cleartext and should be avoided.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
HTTP
Why it's wrong here
HTTP is unencrypted and not for command-line access.
- ✓
SSH
Why this is correct
SSH provides encrypted remote access.
- ✗
Telnet
Why it's wrong here
Telnet uses cleartext and is insecure.
- ✗
FTP
Why it's wrong here
FTP is for file transfer, not command-line access.
Go deeper
Related to this question
Learn chapter
Access Control Fundamentals
Key term
SSH
SSH (Secure Shell) is a cryptographic network protocol that provides secure, encrypted communication and remote administration between two devices over an unsecured network.
Key term
Telnet
Telnet is a network protocol that provides a bidirectional, interactive text-based communication session between two machines over a network, typically used for remote access and management of network devices.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.