Mod 7 DHCPv4 HW Homework in Homework

The default-lease value for a DHCP is?

1 day

The address pool of a DHCP server is configured with 172.21.121.0/25. The network administrator reserves 12 IP addresses for web servers. How many IP addresses are left in the pool to be assigned to other hosts?

114

The address pool of a DHCP server is configured with 10.7.30.0/24. The network administrator reserves 5 IP addresses for printers. How many IP addresses are left in the pool to be assigned to other hosts?

249

The address pool of a DHCP server is configured with 172.23.143.0/26. The network administrator reserves 14 IP addresses for file servers. How many IP addresses are left in the pool to be assigned to other hosts?

48

An administrator issues the commands: Router(config)# interface g0/1Router(config-if)# ip address dhcp What is the administrator trying to achieve?

Configuring the router to obtain IP parameters from a DHCPv4 server

A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server?

DHCPDISCOVER DHCPREQUEST

Which two DHCPv4 messages are used in the lease renewal process?

DHCPREQUEST DHCPACK

What is the order that DHCP servers and clients go through for the client to receive an Address?

Discover, Offer, Request, Acknowledgment

Order the steps of configuring a router as a DHCPv4 Server. (Not all options are used.)3

Exclude IP addresses Configure a DHCP pool Define the default gateway

A company uses DHCP servers to dynamically assign IPv4 addresses to employee workstations. The address lease duration is set as 5 days. An employee returns to the office after an absence of one week. When the employee boots the workstation, it sends a message to obtain an IP address. Which Layer 2 and Layer 3 destination addresses will the message contain?

FF-FF-FF-FF-FF-FF and 255.255.255.255

Which command listed below will exclude the IP address for the server shown in the above diagram?

Ip dhcp excluded-address 172.31.2.132

What is an advantage of configuring a Cisco router as a relay agent?

It can provide relay services for multiple UDP services.

When a DHCP server is configured, which three IP addresses should never be assignable to hosts

Network (or subnetwork) id addresses Broadcast IP address of the network The designated IP address of the DHCP server

What command shows that DHCP is operational?

Show ip DHCP binding

When a client is requesting an initial address lease from a DHCP server, why is the DHCPREQUEST message sent as a broadcast?

The client may have received offers from multiple servers, and the broadcast serves to implicitly decline those other offers

In an office environment with DHCP assigned to PC's, printers and servers should be configured with static IP addresses

True

Which address does a DHCPv4 server target when sending a DHCPOFFER message to a client that makes an address request?

client hardware address

An administrator issues the commands: Router(config)# interface g0/1Router(config-if)# ip address dhcp What is the administrator trying to achieve?

configuring the router to obtain IP parameters from a DHCPv4 server

Which is a DHCPv4 address allocation method that assigns IPv4 addresses for a limited lease period?

dynamic allocation