ISC2 CC Network Security Practice Question
A network administrator needs to allow secure remote management of a router. Which protocol and port should be used?
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 on port 22
SSH (port 22) provides encrypted remote access, unlike Telnet which sends data in cleartext.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
FTP on port 21
Why it's wrong here
FTP is for file transfer, not remote management.
- ✗
HTTP on port 80
Why it's wrong here
HTTP is unencrypted and not used for remote management.
- ✓
SSH on port 22
Why this is correct
SSH encrypts all traffic, including authentication.
- ✗
Telnet on port 23
Why it's wrong here
Telnet is unencrypted and insecure.
Go deeper
Related to this question
Learn chapter
Risk Management and Security Controls
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.
About these practice questions
This CC question is part of Courseiva's 976-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.