IP & Subnetting
The number of bits in an IPv4 address
What is 32 bits?
The DHCP message a client sends to accept an offered IPv4 address.
What is a broadcast DHCPREQUEST?
Two types of devices that are typically assigned static IP addresses.
What are web servers and printers?
This type of packet is sent by a DHCP server after receiving a DHCP Discover message?
What is DHCP Offer
When IPv4 is configured for a computer on a network, the subnet mask identifies this.
What is the network portion of the IP address?
Two steps during which a DHCP-enabled client PC uses broadcast messages when communicating with a DHCP server. The 4 steps are discover, offer, request, acknowledge.
What are DHCPDISCOVER and DHCPREQUEST?
(The client always broadcasts, the server always Unicasts).
Three ranges of IP addresses reserved for internal private use.
What are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16?
Name an advantage of using DHCP to assign addresses to mobile devices
Address leases are temporary and are returned to the pool when the device is turned off.
This is the purpose of the subnet mask in conjunction with an IP address.
What is to determine the subnet to which the host belongs?
The reason why a computer might be assigned the IP address 169.254.100.88.
What is an unreachable DHCP server?
(169.254.x.x is a link-local/APIPA address) :)
Name reasons why network admins create subnets - what are the advantages?
What are improves network performance , easier to implement security policies
This type of server dynamically assigns an IP address to a host
DHCP Server , woot woot!
Name any additional IPv4 addresses that would belong to the same logical network when the subnet mask is 255.255.255.0:
172.16.45.35, 172.16.45.12, and this one.
What is anything starting with 172.16.45.x
Such as: 172.16.45.56
When a device that is configured to use DHCP boots, it does this.
What is the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers?
Which message does an IPv4 host use to reply when it receives a DHCPOFFER message from a DHCP server?
What is DHCPOFFER? (Uhh, the quiz incorrectly wants this answer, so everyone will get +10pts on the quiz... if you remember to answer this wrong way you'll get a bonus!) It's actually a request.
Make three statements that describe a DHCP Discover message
The destination IP address is 255.255.255.255 (it's a broadcast)
Comes from a client seeking an IP address.
All hosts receive the message, but only a DHCP server replies.
Name one factor increasing the adoption of IPv6 network addresses?
IoT adds millions of network-ready sensors that need IP addresses.
This message is sent by the server to let the client know it is able to use the provided IP information
DHCPACK (Acknowledge)
When the IETF began development of IPv6, what was the goal of implementing this technology?
to relieve IPv4 address depletion
172.19.20.5 is an example of: (loopback, private, experimental, link-local)
172.19.20.5 is a private address