1. What does DNS stand for?
- Domain Network Service
- Domain Name System
- Digital Network System
- Distributed Name System
DNS and DHCP MCQ Test: Networking Services Simplified
Test your knowledge on DNS and DHCP with this comprehensive MCQs. Understand key networking services, IP address management and domain name resolution.
📌 Important Exam Instructions
- ✅ This is a free online test. Do not pay anyone claiming otherwise.
- 📋 Total Questions: 30
- ⏳ Time Limit: 30 minutes
- 📝 Marking Scheme: +1 for each correct answer. No negative marking.
- ⚠️ Avoid page refresh or closing the browser tab to prevent loss of test data.
- 🔍 Carefully read all questions before submitting your answers.
- 🎯 Best of Luck! Stay focused and do your best. 🚀
Time Left (min): 00:00
2. Which of the following is the primary function of DNS?
- To assign IP addresses to devices
- To resolve domain names to IP addresses
- To secure network traffic
- To manage network traffic
3. What is the role of a DNS resolver?
- To store IP addresses for quick access
- To send requests to authoritative DNS servers
- To block harmful websites
- To route domain names to DNS servers
4. Which DNS record type maps a domain name to an IPv4 address?
- A record
- AAAA record
- MX record
- CNAME record
5. What does the "MX" record in DNS represent?
- Mail Exchange record
- Master Exchange record
- Multiple Extension record
- Media Exchange record
6. What type of DNS record is used to associate a domain name with an IPv6 address?
- A record
- AAAA record
- CNAME record
- PTR record
7. Which protocol does DNS primarily use for communication?
- TCP
- UDP
- HTTP
- FTP
8. What is a DNS cache used for?
- To store domain names for future queries
- To block unwanted traffic
- To encrypt DNS queries
- To filter IP addresses
9. What is the purpose of a DNS server?
- To store and manage the domain name database
- To monitor network security
- To route data packets between networks
- To perform encryption
10. Which type of DNS query is made when a user directly requests an IP address for a domain?
- Iterative query
- Recursive query
- Non-recursive query
- Forward lookup
11. Which of the following is a DHCP message type that is sent by a client to request an IP address from a DHCP server?
- DHCP Discover
- DHCP Offer
- DHCP Request
- DHCP Acknowledge
12. What is the purpose of DHCP relay agents?
- To relay DHCP messages between clients and servers
- To route traffic between different subnets
- To block unauthorized IP address assignments
- To handle DNS queries
13. What is a DHCP scope?
- A set of available IP addresses that a DHCP server can assign
- A list of DHCP servers in the network
- A method for encrypting DHCP traffic
- A technique for segmenting the network
14. What happens when a DHCP server cannot assign an IP address due to a lack of available addresses?
- The client receives a default IP address
- The client will be assigned a private IP address
- The client cannot access the network
- The DHCP server will continue to attempt to assign an address
15. What is the purpose of a DHCP Reservation?
- To ensure a specific device always receives the same IP address
- To assign a temporary IP address to devices
- To restrict access to a network based on IP address
- To automatically configure DNS settings
16. What does the term "DNS poisoning" refer to?
- Corrupting the DNS cache with incorrect IP address information
- Encrypting DNS traffic
- Filtering DNS queries to block malicious sites
- Assigning incorrect IP addresses to devices
17. Which of the following is an advantage of using DHCP over static IP assignment?
- Reduces manual configuration and errors
- Ensures greater security for network traffic
- Requires less bandwidth for IP assignment
- Assigns IP addresses faster
18. What is the purpose of DNS recursion?
- To search for the IP address associated with a domain name across multiple DNS servers
- To filter malicious DNS queries
- To monitor DNS traffic
- To configure DNS settings on devices
19. What is the primary function of a CNAME record in DNS?
- To alias one domain name to another
- To map a domain name to an IP address
- To assign a specific mail server for a domain
- To associate a domain name with an IPv6 address
20. How can DNS security be enhanced to prevent DNS attacks?
- By implementing DNSSEC (DNS Security Extensions)
- By disabling DNS caching
- By using static DNS records only
- By restricting DNS queries to internal users only
21. What is the main advantage of using DHCP over manual IP address configuration?
- Simplifies network management by automating IP address allocation
- Provides more security by assigning unique IP addresses
- Reduces the chances of IP conflicts
- Speeds up network traffic
22. Which of the following tools is used for testing and troubleshooting DNS?
- ipconfig
- nslookup
- ping
- traceroute
23. What type of DNS record is typically used for load balancing across multiple servers?
- A record
- CNAME record
- MX record
- SRV record
24. What does a DNS TTL (Time to Live) value indicate?
- The time duration for which DNS information is cached
- The number of DNS servers in a query
- The time it takes for DNS queries to be resolved
- The priority level of a DNS record
25. What happens when a DHCP lease expires?
- The device loses its assigned IP address and must request a new one
- The device retains the IP address until the server is reset
- The device is automatically assigned a new static IP address
- The device will continue using the same IP address without interruption
26. What is an authoritative DNS server?
- A server that provides the definitive answer to DNS queries for a domain
- A server that filters unwanted DNS requests
- A server that handles DNS caching
- A server that blocks specific websites
27. What is a key feature of Dynamic DNS (DDNS)?
- It allows automatic updating of DNS records when IP addresses change
- It prevents DNS caching
- It improves DNS query performance
- It resolves DNS errors automatically
28. Which of the following best describes the role of a DHCP client?
- To request an IP address from the DHCP server
- To assign static IP addresses to devices
- To filter DNS queries
- To act as a DNS resolver
29. How does a DNS resolver function in the context of a recursive query?
- It queries multiple DNS servers until it gets an authoritative response
- It stores DNS records locally for faster lookup
- It sends requests to only local DNS servers
- It filters DNS requests based on security rules
30. What is the primary function of a DNS forwarder?
- To send DNS queries to another DNS server for resolution
- To block malicious DNS queries
- To encrypt DNS queries
- To perform DNS lookups locally