CCNA Network Services and Security Practice Question
This 200-301 practice question tests your understanding of network services and security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: sSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which statement best explains why SSH is preferred over Telnet for remote administration?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SSH encrypts the management session, while Telnet does not
SSH is preferred because it encrypts remote administration traffic, including credentials and session data, while Telnet sends that information in clear text. In plain language, SSH helps protect administrative access from interception on the network. This makes it the safer and more modern choice for remote device management.
This distinction is one of the most basic but important management-plane security lessons in CCNA. The goal is not to eliminate remote management but to perform it in a safer way. That is why the correct answer focuses on encryption and protection of remote sessions, not on unrelated behavior such as VLAN tagging or routing protocol participation.
Key principle: SSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
SSH encrypts the management session, while Telnet does not
Why this is correct
This is correct because SSH protects credentials and session data with encryption.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
SSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network.
✗
Telnet is preferred because it is more secure than SSH
Why it's wrong here
This is wrong because Telnet is less secure due to lack of encryption.
When this WOULD be correct
In a hypothetical exam question that asks which protocol is preferred for a specific legacy system that does not support encryption, a candidate might argue that Telnet is preferred due to its simplicity and compatibility, thus making it the correct choice in that context.
✗
SSH removes the need for usernames and passwords
Why it's wrong here
This is wrong because SSH does not remove authentication requirements.
When this WOULD be correct
In a hypothetical question asking about a protocol that eliminates the need for traditional authentication methods in a specific context, such as a single sign-on (SSO) system or a token-based authentication scenario, this option could be deemed correct if discussing a different technology that does not require usernames and passwords.
✗
Telnet is the required protocol for STP root election
Why it's wrong here
This is wrong because STP root election has nothing to do with Telnet or SSH.
When this WOULD be correct
If the exam question asked which protocol is specifically used for managing STP root election or if it inquired about the protocols involved in network topology management, then this option could be correct.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓SSH encrypts the management session, while Telnet does notCorrect answer▾
Why this is correct
This is correct because SSH protects credentials and session data with encryption.
✗Telnet is preferred because it is more secure than SSHWrong answer — click to see why▾
Why this is wrong here
This option is incorrect because Telnet transmits data in plaintext, making it vulnerable to eavesdropping, while SSH provides encryption for secure communication. Therefore, SSH is preferred for secure remote administration.
★ When this WOULD be the correct answer
In a hypothetical exam question that asks which protocol is preferred for a specific legacy system that does not support encryption, a candidate might argue that Telnet is preferred due to its simplicity and compatibility, thus making it the correct choice in that context.
Why candidates choose this
Candidates may choose this option due to a misunderstanding of security concepts, mistakenly believing that simpler protocols like Telnet are inherently more secure or suitable for certain environments without considering encryption needs.
✗SSH removes the need for usernames and passwordsWrong answer — click to see why▾
Why this is wrong here
This option is incorrect because SSH does require usernames and passwords for authentication, just like Telnet. The statement misrepresents the fundamental operation of SSH, which still relies on user credentials for secure access.
★ When this WOULD be the correct answer
In a hypothetical question asking about a protocol that eliminates the need for traditional authentication methods in a specific context, such as a single sign-on (SSO) system or a token-based authentication scenario, this option could be deemed correct if discussing a different technology that does not require usernames and passwords.
Why candidates choose this
Candidates may choose this option due to a misunderstanding of SSH's authentication mechanisms, mistakenly believing that SSH's encryption somehow eliminates the need for user credentials, reflecting a common confusion about security protocols.
✗Telnet is the required protocol for STP root electionWrong answer — click to see why▾
Why this is wrong here
This option is incorrect because Telnet is not the required protocol for Spanning Tree Protocol (STP) root election; STP operates independently of Telnet and uses its own mechanisms for root election.
★ When this WOULD be the correct answer
If the exam question asked which protocol is specifically used for managing STP root election or if it inquired about the protocols involved in network topology management, then this option could be correct.
Why candidates choose this
Candidates might choose this option due to confusion between management protocols and network protocols, mistakenly associating Telnet's role in network management with STP processes.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common exam trap is selecting Telnet as the preferred protocol because of its simplicity or familiarity, ignoring its lack of encryption. Candidates may also incorrectly believe that SSH removes the need for usernames and passwords, confusing encryption with authentication. Another trap is associating Telnet with unrelated network functions like STP root election, which is incorrect. These misconceptions can lead to choosing insecure options or misunderstanding protocol roles. The key is to focus on the security features of SSH, especially its encryption of management sessions, which Telnet lacks.
Detailed technical explanation
How to think about this question
Secure Shell (SSH) is a network protocol that provides encrypted communication for remote device management, protecting data such as usernames, passwords, and session information from interception. Unlike Telnet, which transmits data in clear text, SSH uses cryptographic techniques to secure the management session, ensuring confidentiality and integrity. This encryption is critical in modern networks where administrative access must be safeguarded against eavesdropping and man-in-the-middle attacks.
When choosing a remote management protocol, Cisco devices prefer SSH over Telnet because SSH authenticates users and encrypts all transmitted data. This means that credentials and commands are not exposed on the network, reducing the risk of credential theft or session hijacking. Telnet, by contrast, sends all information unencrypted, making it vulnerable to interception. Cisco’s IOS supports SSH configuration to replace Telnet for secure remote access, aligning with best practices for network security.
A common exam trap is confusing SSH’s encryption benefits with unrelated protocol functions or assuming Telnet is more secure due to familiarity. Additionally, some may mistakenly believe SSH eliminates the need for authentication, which is false; SSH requires valid credentials. Practically, network administrators must always enable SSH and disable Telnet on Cisco devices to maintain secure administrative access, reflecting the CCNA emphasis on protecting management-plane traffic.
KKey Concepts to Remember
SSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network.
Telnet transmits management sessions in clear text, exposing sensitive information to potential attackers.
Cisco devices prefer SSH over Telnet for remote administration due to SSH's support for secure authentication and encryption.
SSH requires valid usernames and passwords for authentication, maintaining access control despite encrypting the session.
Telnet is not involved in network protocols like STP root election and does not provide security features for management traffic.
Enabling SSH and disabling Telnet on Cisco devices is a best practice to secure the management plane.
The use of SSH aligns with CCNA security fundamentals by protecting administrative access from eavesdropping and credential theft.
Understanding the difference between encrypted and unencrypted management protocols is essential for securing network devices.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
SSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network.
Real-world example
How this comes up in practice
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 200-301 question in full detail.
Review sSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network., then practise related 200-301 questions on the same topic to reinforce the concept.
Network Services and Security — This question tests Network Services and Security — SSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network..
What is the correct answer to this question?
The correct answer is: SSH encrypts the management session, while Telnet does not — SSH is preferred because it encrypts remote administration traffic, including credentials and session data, while Telnet sends that information in clear text. In plain language, SSH helps protect administrative access from interception on the network. This makes it the safer and more modern choice for remote device management.
This distinction is one of the most basic but important management-plane security lessons in CCNA. The goal is not to eliminate remote management but to perform it in a safer way. That is why the correct answer focuses on encryption and protection of remote sessions, not on unrelated behavior such as VLAN tagging or routing protocol participation.
What should I do if I get this 200-301 question wrong?
Review sSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network., then practise related 200-301 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
SSH encrypts all remote management traffic, including credentials and session data, to prevent interception on the network.
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