350-701 Security Concepts Practice Question
An attacker performs a DNS cache poisoning attack on a recursive DNS server. What is the primary impact of this attack?
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
✓
Redirection of traffic to malicious servers
DNS cache poisoning injects false DNS records, causing users to be redirected to malicious sites when they attempt to access legitimate domains.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Encryption of DNS queries
Why it's wrong here
Cache poisoning does not affect encryption.
- ✗
Exposure of DNS server credentials
Why it's wrong here
Cache poisoning does not directly expose credentials.
- ✓
Redirection of traffic to malicious servers
Why this is correct
The injected records redirect traffic to attacker-controlled servers.
- ✗
Denial of service to the DNS server
Why it's wrong here
Cache poisoning does not necessarily cause a denial of service; it corrupts data.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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