2.6 DHCP

Question 1

What does DHCP stand for?

Answer 1

Dynamic Host Configuration Protocol.

Question 2

What is the primary purpose of DHCP?

Answer 2

Automates IP address assignment, reducing human error and preventing IP conflicts.

Question 3

What are the four key components DHCP assigns to a device?

Answer 3

IP address, subnet mask, default gateway, and DNS server.

Question 4

What are the benefits of using DHCP?

Answer 4

Automates network configurations, prevents duplicate IP conflicts, saves time, and provides centralized control.

Question 5

What is the DORA process in DHCP?

Answer 5

Discover, Offer, Request, Acknowledge.

Question 6

What happens during the DHCP Discover phase?

Answer 6

The client sends a broadcast request asking for an available IP address.

Question 7

What happens during the DHCP Offer phase?

Answer 7

The DHCP server offers an available IP address to the client.

Question 8

What happens during the DHCP Request phase?

Answer 8

The client requests to use the offered IP address.

Question 9

What happens during the DHCP Acknowledge phase?

Answer 9

The DHCP server confirms the IP assignment and provides lease information.

Question 10

What is a DHCP lease time?

Answer 10

The duration a client can use an assigned IP before renewal.

Question 11

What are DHCP reservations?

Answer 11

Assigns a specific IP address to a device based on its MAC address.

Question 12

Why would you use a DHCP reservation?

Answer 12

To ensure consistent IP addresses for devices like printers, servers, and network devices.

Question 13

What happens when a device cannot reach a DHCP server?

Answer 13

It self-assigns an APIPA (169.254.x.x) address.

Question 14

What does an APIPA address (169.254.x.x) indicate?

Answer 14

The device failed to contact a DHCP server.

Question 15

What is an alternate static IP?

Answer 15

A manually assigned fallback IP in case DHCP is unavailable.

Question 16

How does DHCP prevent IP conflicts?

Answer 16

It dynamically assigns unique addresses from a predefined pool.

Question 17

What is a subnet mask in DHCP?

Answer 17

Defines which part of an IP address belongs to the network and which part belongs to the host.

Question 18

What is the role of a default gateway in DHCP?

Answer 18

Specifies the router’s IP for external network access.

Question 19

What does DHCP assign for domain name resolution?

Answer 19

DNS server addresses.

Question 20

When should static IPs be used instead of DHCP?

Answer 20

For critical devices like servers, printers, and network equipment.

Question 21

What are the disadvantages of static IP assignment?

Answer 21

Time-consuming, prone to human errors, and hard to manage in large networks.

Question 22

What are the advantages of DHCP?

Answer 22

Fast, automated, prevents conflicts, and allows easy network management.

Question 23

Why is a DHCP server essential in large networks?

Answer 23

It reduces the administrative workload and prevents duplicate IP issues.

Question 24

What should you do if a network device has an APIPA address?

Answer 24

Check DHCP server availability, network cables, and router settings.

Question 25

What is the best practice for assigning IPs in an enterprise network?

Answer 25

Use DHCP for most devices and reserve static IPs for critical infrastructure.