CHAP 7.1 DHCP

Question 1

function of dhcp

Answer 1

• supply ip adds to dhcp clients automatically

- ensure correct configtn info

Question 2

benefits

Answer 2

• reduce complexity of managing clients ip add
• reduce administrative effort by using automatic TCP/IP configtn
• eliminate source of network problem

Question 3

lease generation process

Answer 3

1. DHCPDISCOVER
2. DHCPOFFER
3. DHCPREQUEST
4. DHCPACK
   client send to dhcp server first then back and forth

Question 4

lease renewal process

Answer 4

50% of lease duration expired:

1. DHCPREQUEST
2. DHCPACK

87.5%:
dhcp lease renewal process will cont (RA)

100%:
- dhcp lease generation process starts (back to DORA)

Question 5

automatic private ip add (APIPA)

Answer 5

• comp that is configured to use dhcp can automatically assign itself an ip add if a dhcp server is not avail or temporarily down for maintenance
• APIPA adds: 169.254.0.0-169.254.255.255

Question 6

dhcp options

Answer 6

• router
• dns server
• domain name

Question 7

monitoring dhcp purpose

Answer 7

• observe the dynamic dhcp environment

- determine dhcp server performance

Question 8

reasons for clients failure to lease an add

Answer 8

• dhcp server is not authorized

- no available add in scope