MCQs

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1. What is the primary purpose of DHCP in a network?
   a. To assign IP addresses automatically
   b. To assign MAC addresses manually
   c. To increase bandwidth
   d. To monitor network traffic
   Answer: asanfoundry+1
2. DHCP operates at which layer of the OSI model?
   a. Application
   b. Network
   c. Data Link
   d. Transport
   Answer: aeasyexamnotes+1
3. Which UDP port does a DHCP server use for communication?
   a. 65
   b. 67
   c. 68
   d. 69
   Answer: bscribd+1
4. Which UDP port does a DHCP client use to receive messages?
   a. 65
   b. 67
   c. 68
   d. 69
   Answer: csanfoundry+1
5. What is the main advantage of DHCP over static IP addressing?
   a. Requires less hardware
   b. Provides dynamic assignment
   c. Reduces internet speed
   d. Needs manual configuration
   Answer: bwebasha+1
6. DHCP can be used for which types of IP addresses?
   a. Only IPv4
   b. Only IPv6
   c. Both IPv4 and IPv6
   d. Only MAC addresses
   Answer: cscribd+1
7. What is a DHCP lease?
   a. Permanent assignment of IP
   b. Time-limited assignment of IP
   c. Assignment of MAC address
   d. Assignment of DNS address
   Answer: bpynetlabs+1
8. What message does a client broadcast to locate a DHCP server?
   a. DHCP Discover
   b. DHCP Request
   c. DHCP Offer
   d. DHCP Release
   Answer: ascribd
9. What is the next message sent by the server after receiving DHCP Discover?
   a. DHCP Release
   b. DHCP Offer
   c. DHCP Ack
   d. DHCP Request
   Answer: bscribd
10. What message does the client send if it wants to accept the offer?
    a. DHCP Discover
    b. DHCP NAK
    c. DHCP Release
    d. DHCP Request
    Answer: dscribd
11. The DHCP server confirms allocation with which message?
    a. DHCP Decline
    b. DHCP NAK
    c. DHCP Ack
    d. DHCP Discover
    Answer: cscribd
12. What is the default method for assigning IP addresses via DHCP?
    a. Random selection
    b. Sequential order
    c. From a pool
    d. Vendor selection
    Answer: csanfoundry+1
13. If no DHCP server is found, what address range may Windows assign?
    a. 192.168.x.x
    b. 10.x.x.x
    c. 169.254.x.x
    d. 127.0.0.1
    Answer: cscribd
14. Which device can act as a DHCP relay agent?
    a. Switch
    b. Router
    c. Printer
    d. Laptop
    Answer: bwebasha+1
15. What is the role of DHCP relay agent?
    a. Assign IPs to devices
    b. Forward DHCP messages between subnets
    c. Encrypt client requests
    d. Block unauthorized requests
    Answer: bwebasha+1
16. Which option in DHCP provides the default gateway?
    a. Option 3
    b. Option 6
    c. Option 15
    d. Option 43
    Answer: awebasha
17. Which parameter does DHCP not assign?
    a. IP address
    b. MAC address
    c. Subnet mask
    d. DNS server
    Answer: bscribd+1
18. What standard describes DHCP?
    a. RFC 826
    b. RFC 2131
    c. RFC 1918
    d. RFC 1459
    Answer: bgeeksforgeeks
19. What does BOOTP stand for?
    a. Basic Opportunity Port
    b. Boot Program
    c. Bandwidth Option Protocol
    d. Base Output Protocol
    Answer: bscribd
20. DHCP lease time is best described as:
    a. The permanent duration of IP usage
    b. The interval for which an IP is assigned
    c. The time taken to send a packet
    d. The clock speed of the DHCP server
    Answer: bpynetlabs+2
21. Which device commonly acts as a DHCP server on enterprise networks?
    a. Firewall
    b. Router
    c. Printer
    d. Hub
    Answer: bwebasha+1
22. DHCP options can provide additional settings. Which of the following is NOT a typical DHCP option?
    a. Subnet mask
    b. Default gateway
    c. Device hostname
    d. IP address
    Answer: dwebasha
23. What is a DHCP scope?
    a. The security perimeter of DHCP
    b. Range of assignable IP addresses
    c. The server’s lease duration
    d. The protocol buffer size
    Answer: bpynetlabs+1
24. What happens when multiple DHCP servers exist in a LAN?
    a. Devices randomly select addresses
    b. Servers coordinate address pools
    c. Network crashes
    d. Only one server works
    Answer: bwebasha
25. What is the DHCP Decline message used for?
    a. Client rejects IP offer due to conflict
    b. Server denies access
    c. Relay agent notifies server
    d. Pool exhaustion
    Answer: ascribd
26. What is APIPA?
    a. Assigned by DHCP server
    b. Automatic Private IP Addressing when DHCP fails
    c. IP address for remote sites
    d. Static host configuration
    Answer: bscribd
27. In a DHCP transaction, what does a client do after lease expiration if it still needs the address?
    a. Ignores the address
    b. Sends DHCP Discover
    c. Sends DHCP Request for renewal
    d. Sends DHCP Release
    Answer: csanfoundry+1
28. What is DHCP NAK?
    a. Negative acknowledgment message
    b. Server agrees
    c. Client renews lease
    d. Device confirms network
    Answer: ascribd
29. Which protocol does DHCP use for transport?
    a. TCP
    b. UDP
    c. ICMP
    d. HTTP
    Answer: bscribd+1
30. What DHCP option sets DNS servers?
    a. Option 3
    b. Option 6
    c. Option 15
    d. Option 43
    Answer: bwebasha
31. Which DHCP message is sent during the release of an IP address?
    a. DHCP Discover
    b. DHCP Offer
    c. DHCP Request
    d. DHCP Release
    Answer: dscribd
32. What does the DHCP server do when a requested IP is unavailable?
    a. Offers different IP
    b. Sends DHCP NAK
    c. Reboots
    d. Logs error without responding
    Answer: bscribd
33. Which option configures the domain name via DHCP?
    a. Option 3
    b. Option 6
    c. Option 15
    d. Option 43
    Answer: cwebasha
34. Can a DHCP server manage multiple subnets?
    a. No, only one
    b. Yes, with correct configuration
    c. Only with relay
    d. Only within broadcast domain
    Answer: bwebasha+1
35. Which of the following is NOT a DHCP message type?
    a. DHCP Discover
    b. DHCP Offer
    c. DHCP Update
    d. DHCP Request
    Answer: cscribd
36. Which devices can be DHCP clients?
    a. Routers only
    b. Computers only
    c. Most networked devices
    d. Only servers
    Answer: cgeeksforgeeks+1
37. What occurs if there is an IP address conflict after DHCP assignment?
    a. Network functions normally
    b. Device receives warning and disables interface
    c. Address pool expands automatically
    d. Lease time doubles
    Answer: bscribd
38. Which DHCP feature supports high availability?
    a. Scope
    b. Lease time
    c. DHCP failover
    d. Relay agent
    Answer: cwebasha
39. What is the main purpose of the DHCP Ack message?
    a. Confirms address assignment
    b. Denies lease
    c. Reserves address pool
    d. Disables client interface
    Answer: ascribd
40. Which message does a client send if it requires specific configuration options?
    a. DHCP Discover
    b. DHCP Request
    c. DHCP Decline
    d. DHCP Release
    Answer: bscribd
41. How does DHCP help reduce network administrative workload?
    a. Automates IP and parameter assignments
    b. Increases manual intervention
    c. Disables network access
    d. Requires daily address configuration
    Answer: ageeksforgeeks+2
42. What will happen when all IP addresses in a DHCP pool are assigned?
    a. Server ignores further requests
    b. Server returns pool exhausted message
    c. Server offers APIPA address
    d. Server reclaims unused leases
    Answer: bscribd
43. What is the first step in DHCP communication if a client needs an IP?
    a. Send DHCP Discover message
    b. Wait for DHCP Offer
    c. Send ARP request
    d. Send ICMP ping
    Answer: awebasha+1
44. Which DHCP option allows vendors to send custom information?
    a. Option 3
    b. Option 6
    c. Option 15
    d. Option 43
    Answer: dwebasha
45. What is meant by DHCP “scope options”?
    a. Options applied to the entire address range
    b. Options for a single device
    c. Vendor-assigned parameters
    d. Router-only options
    Answer: awebasha
46. What is reserved IP in DHCP?
    a. IP always assigned to one specific device
    b. IP never used in network
    c. IP with shortest lease
    d. Gateway IP address
    Answer: apynetlabs+1
47. DHCP starvation attack causes:
    a. Network improvement
    b. Exhaustion of available IPs
    c. Auto-renewal of leases
    d. Network shutdown
    Answer: bindeed
48. DHCP client uses which IP before assignment?
    a. 127.0.0.1
    b. 192.168.1.1
    c. 0.0.0.0
    d. 255.255.255.255
    Answer: cscribd
49. How does DHCP support mobile devices?
    a. Allows dynamic reallocation of IPs
    b. Requires static configuration
    c. Disables roaming
    d. Assigns one fixed IP per device
    Answer: ageeksforgeeks
50. What is the full form of DHCP in networking?
    a. Dynamic Host Configuration Protocol
    b. Data Handling Configuration Plan
    c. Device Host Control Process
    d. Direct Host Connection Protocol
    Answer: atestbook

1. https://www.sanfoundry.com/computer-networks-questions-answers-dhcp/
2. https://www.geeksforgeeks.org/computer-networks/dynamic-host-configuration-protocol-dhcp/
3. https://easyexamnotes.com/dynamic-host-configuration-protocol-mcqs/
4. https://www.scribd.com/document/489037490/DHCP-Interview-Questions-Answers-Vol-1-0-1
5. https://www.scribd.com/document/564742072/This-set-of-Computer-Networks-Multiple-Choice-Questions
6. https://www.webasha.com/blog/ccna-interview-questions-on-dhcp
7. https://www.pynetlabs.com/dhcp-interview-questions-and-answers/
8. https://in.indeed.com/career-advice/interviewing/dhcp-interview-questions
9. https://testbook.com/question-answer/what-is-the-full-form-of-dhcp-in-networking-system–6138895fcb946b85ce85b65a
10. https://itexamanswers.net/ccna-200-125-exam-dhcp-questions-with-answers.html
11. https://reck.ac.in/wp-content/uploads/2023/04/DCN_MCQ-Ashwini-.pdf
12. https://www.studocu.com/row/document/united-international-university/computer-networks/a-unique-quiz-on-ccna-dhcp-questions-pro-profs-quiz/37910315
13. https://infraexam.com/networking-essentials-2-0/networking-essentials-version-2-networking-essentials-2-0-practice-final-exam-answers/
14. https://edurev.in/test/28334/Test-DHCP–Dynamic-Host-Configuration-Protocol-
15. https://www.sanfoundry.com/hdlc-high-level-data-link-control-training/
16. https://itexamanswers.net/networking-basics-course-final-exam-answers.html
17. https://wayground.com/admin/quiz/67a07dc9cb65b874eda5b4a4/dhcp
18. https://www.sanfoundry.com/computer-network-questions-answers/
19. https://fti.uajy.ac.id/wp-content/uploads/2018/02/Networking-Fundamentals.pdf
20. https://www.scribd.com/document/539494664/Networking-And-Scripting-DHCP-Interview-Questions