CCNA 16-NETWORK
SECURITY
FUNDAMENTALS TEST
QUESTIONS AND
CORRECT ANSWERS
GRADED A+ 2025-2026
Which component is designed to protect against unauthorized communications to and
from a computer? - ANS-firewall
Which command will block login attempts on RouterA for a period of 30 seconds if
there are 2 failed login attempts within 10 seconds? - ANS-login block- for 30 attempts
2 within 10
What is the purpose of the network security accounting function? - ANS-to keep track
of the actions of a user
What type of attack may involve the use of tools such as nslookup and fping? - ANS-
recon attack
Which benefit does SSH offer over Telnet for remotely managing a router? - ANS-
Encryption
What is one of the most effective security tools available for protecting users from
external threats? - ANS-firewalls
SECURITY
FUNDAMENTALS TEST
QUESTIONS AND
CORRECT ANSWERS
GRADED A+ 2025-2026
Which component is designed to protect against unauthorized communications to and
from a computer? - ANS-firewall
Which command will block login attempts on RouterA for a period of 30 seconds if
there are 2 failed login attempts within 10 seconds? - ANS-login block- for 30 attempts
2 within 10
What is the purpose of the network security accounting function? - ANS-to keep track
of the actions of a user
What type of attack may involve the use of tools such as nslookup and fping? - ANS-
recon attack
Which benefit does SSH offer over Telnet for remotely managing a router? - ANS-
Encryption
What is one of the most effective security tools available for protecting users from
external threats? - ANS-firewalls
