Question:
Identify the protocol that provides a secure, encrypted channel for remote login over an insecure network.
Identify the protocol that provides a secure, encrypted channel for remote login over an insecure network.
Show Hint
Which remote login protocol encrypts its data? Remember the S in the name.
Updated On: Nov 3, 2026
- TELNET
- SSH
- HTTP
- TCP
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
We need a protocol for logging in to a remote computer in a safe way. The data must be encrypted so that nobody on the network can read it.
Step 2: Key Concept:
SSH stands for Secure Shell. It creates an encrypted channel between two computers, so passwords and commands cannot be read by others even on a public or insecure network.
Step 3: Check option A (TELNET):
TELNET also gives remote login, but it sends everything, even the password, as plain text. Anyone watching the network can read it. So A is FALSE.
Step 4: Check option B (SSH):
SSH gives remote login and encrypts all the data. This matches the question. So B is TRUE.
Step 5: Check option C (HTTP):
HTTP is used to transfer web pages. It is not for remote login and it is not encrypted (HTTPS is the secure version). So C is FALSE.
Step 6: Check option D (TCP):
TCP is a transport protocol that delivers data reliably. It does not provide login or encryption by itself. So D is FALSE.
Final Answer:
SSH is the secure, encrypted protocol for remote login, so the correct option is B. \[ \boxed{\text{B. SSH}} \]
We need a protocol for logging in to a remote computer in a safe way. The data must be encrypted so that nobody on the network can read it.
Step 2: Key Concept:
SSH stands for Secure Shell. It creates an encrypted channel between two computers, so passwords and commands cannot be read by others even on a public or insecure network.
Step 3: Check option A (TELNET):
TELNET also gives remote login, but it sends everything, even the password, as plain text. Anyone watching the network can read it. So A is FALSE.
Step 4: Check option B (SSH):
SSH gives remote login and encrypts all the data. This matches the question. So B is TRUE.
Step 5: Check option C (HTTP):
HTTP is used to transfer web pages. It is not for remote login and it is not encrypted (HTTPS is the secure version). So C is FALSE.
Step 6: Check option D (TCP):
TCP is a transport protocol that delivers data reliably. It does not provide login or encryption by itself. So D is FALSE.
Final Answer:
SSH is the secure, encrypted protocol for remote login, so the correct option is B. \[ \boxed{\text{B. SSH}} \]
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