Section 19 – Review 4

Section 19 Tasks

• Review switch security
• Take the subnetting exam below
• Follow the DHCP lab in Day 14
• Complete the DHCP challenge lab below
• Read the ICND1 cram guide
• Spend 15 minutes on the subnetting.org website

Section 19 Exam

1. Which subnet is host 200.200.100.103/29 in?
2. Which subnet is host 190.100.23.45/25 in?
3. Which subnet is host 19.200.12.120/15 in?
4. Which subnet is host 100.12.45.12/15 in?
5. Which subnet is host 130.23.34.3/27 in?
6. Network 192.168.1.0 needs subnetting to create five subnets, each with at least 20 hosts. Which subnet mask needs to be applied?
7. Network 200.100.1.0 needs subnetting to create eight subnets, each with at least 15 hosts. Which subnet mask needs to be applied?
8. Network 30.0.0.0 needs subnetting to create 260 subnets, each with at least 1000 hosts. Which subnet mask needs to be applied?
9. Network 200.168.1.0 needs subnetting to create subnets that will contain only two hosts. Which subnet mask needs to be applied?
10. Network 170.24.0.0 needs subnetting to create 10 subnets, each with at least 500 hosts. Which subnet mask needs to be applied?

Section 19 Answers

1. 200.200.100.96
2. 190.100.23.0
3. 19.200.0.0
4. 100.12.0.0
5. 130.23.34.0
6. 255.255.255.224
7. 255.255.255.224
8. 255.255.128.0
9. 255.255.255.252
10. 255.255.240.0

Section 19 Lab – DHCP

Topology

Instructions

Connect a PC to a router Ethernet interface:

1. Configure IP address 10.0.0.1/8 onto the router
2. Create a DHCP pool for the 10.0.0.0/8 network
3. Add an excluded address of the router interface
4. Add a default router address of 192.168.1.1
5. Configure the PC to obtain the IP address via DHCP
6. Check the IP configuration of the PC for the IP address assignment
7. Check the router to verify that an IP address is assigned to the PC

Solution Hints and Commands

• Service dhcp command to enable DHCP service
• Router(config)#ip dhcp pool SUBNET_A command
• Router(dhcp-config)#network x.x.x.x command
• Router(dhcp-config)#default-router x.x.x.x command
• Router(dhcp-config)#dns-server x.x.x.x command
• Router(dhcp-config)#domain-name xxxx command
• Router(dhcp-config)#lease x command
• ip dhcp excluded-address <start_ip> <end_ip> command
• show ip dhcp binding command