DHCP Facts

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What is the purpose of manually configuring a static IP?

To ensure the IP address does not change when the device disconnects.

What is the purpose of the default gateway in DHCP configuration?

To provide a route for devices to communicate with other networks.

What is the purpose of the WINS server in DHCP configuration?

To resolve NetBIOS names to IP addresses.

What is the purpose of the DNS server in DHCP configuration?

To resolve domain names to IP addresses.

What does DHCP configuration include?

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

When are reserved static IPs assigned?

When device with MAC address connects.

When does the DHCP renewal process occur?

When there is fifty percent remaining on the device's lease time.

Can all available addresses in the network be assigned in the IP range?

Yes, all available addresses can be assigned.

Can WINS server be defined in DHCP scope?

Yes, if it is needed for the network.

Is the subnet mask required in DHCP configuration?

Yes, it must be defined.

Can specific ranges of addresses be assigned in the IP range?

Yes, specific ranges can be assigned.

What does the 'D' in DORA stand for?

DHCP discover.

What does the 'O' in DORA stand for?

DHCP offer.

What does the client send during the DHCP renewal process?

DHCP request packet.

What does the 'R' in DORA stand for?

DHCP request.

What is the DHCP process?

A four-step process to obtain IP configuration.

How should lease be set for short-term connections?

Accordingly to avoid tying up addresses.

What is a dynamic IP?

Automatically assigned IP address handled by DHCP.

How are reservations assigned?

By DHCP server using device's MAC address.

How is DHCP implemented?

By defining a DHCP scope.

What happens during the DHCP request step?

Client accepts the offered address by sending a DHCP request back to the DHCP server.

What happens if multiple offers were sent during the DHCP request step?

Client informs other DHCP servers that their offers were not accepted.

What happens during the DHCP discover step?

Client sends a DHCP discover frame to identify DHCP servers.

What happens if multiple DHCP servers respond with offers?

Client usually responds to the first offer received.

What does the 'A' in DORA stand for?

DHCP ACK (acknowledgement).

What does the server respond with during the DHCP renewal process?

DHCP ACK packet and renews the IP configuration.

What steps are skipped during the DHCP renewal process?

DHCP discover and DHCP offer steps.

What happens during the DHCP offer step?

DHCP server responds with a DHCP offer advertisement containing an available IP address.

What happens during the DHCP ACK step?

DHCP server whose offer was accepted responds with a DHCP ACK.

What does the default gateway do?

Defines where outgoing data packets go.

What happens when lease is half over?

Device attempts to renew the lease.

What is the DHCP process?

Dynamic Host Configuration Protocol process.

How should lease be set for long-term connections?

For days to keep IP address tied up.

How long can a lease be set for?

From hours to days, weeks, or months.

What are exclusions?

IP addresses that DHCP server won't assign.

What are the options that need to be defined in a DHCP scope?

IP range, subnet mask, default gateway, DNS server, and WINS server.

How does the DHCP server assign IP addresses?

It assigns the next available address in the IP range.

What are the benefits of specifying a limited number of addresses in the IP range?

It helps limit the number of connections to the network.

What is a static IP?

Manually configured IP address that does not change.

How are exclusion addresses configured?

Manually on each device within IP range.

Can a leased IP be reassigned?

No, even if device disconnects from network.

Is WINS server commonly used?

No, most networks don't use WINS anymore.

What is the IP range in a DHCP scope?

Range of IP addresses that the DHCP server can assign.

What is the purpose of implementing DHCP?

To automate the assignment of IP configuration to devices.

What is the purpose of a DNS server?

Resolving domain names to IP addresses.

What devices can serve as DHCP servers?

SOHO router, Windows or Linux server.

What devices are typically excluded?

Servers, printers, routers, network devices.

What is DHCP lease time?

Specified time for device's IP configuration.

What are reservations?

Static IP addresses not dynamically assigned.

What happens if the client is off the network for an extended period and the lease expires?

The IP address goes back into the pool and can be reassigned to another device.

What does the subnet mask define?

The network ID and host ID.

What is the role of DHCP?

To assign IP configuration automatically to devices.


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