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
