mediumMultiple ChoiceObjective-mapped
200-201 Practice Question: Refer to the exhibit
Exhibit
access-list 100 permit tcp any any eq 22 access-list 100 deny ip any any
Refer to the exhibit. What traffic is the router permitting?
⚠ Common exam trap
Cisco often tests the association between common services and their default port numbers, and the trap here is confusing SSH (port 22) with Telnet (port 23) or assuming HTTP/HTTPS (ports 80/443) are permitted when only port 22 is explicitly allowed.
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
The router is permitting SSH traffic because the access control list (ACL) matches TCP port 22, which is the default port for SSH. SSH provides encrypted remote administration, and the ACL entry permits inbound TCP connections to port 22, allowing secure shell access to the router.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Telnet
Why it's wrong here
Telnet uses port 23, not 22.
- ✗
HTTP
Why it's wrong here
HTTP uses port 80.
- ✓
SSH
Why this is correct
Port 22 is used by SSH.
- ✗
FTP
Why it's wrong here
FTP uses ports 20 and 21.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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