IOS DHCP Server Config

Posted February 1, 2017

In 200-301 V1 Ch19: DHCP, 200-301 V1 Part 5: IPv4 Routing, 200-301 V1 Parts, CCENT-OLD, Q&A

Today’s sample question gives you a chance to test yourself to find out if you already know a few of the points made in one of the Common Mistake videos in the CCENT Exam Prep LiveLessons video product (video 9.3 in particular). Specifically, this question test you on a couple of details related to the configuration of a DHCP server on a Cisco router.

News about New Cisco Press products: ciscopress.com/newcert

The Question

Router R1 acts as the DHCP server for the LAN connected to R2. The DHCP server should be ready to assign addresses in the upper half of the range of addresses in subnet 172.16.2.0/24. The server should also not assign addresses in the lower half of the subnet, particularly addresses already used by router R2 and switch SW2 as shown in the figure. Which answers list a DHCP server configuration setting that would be part of a working configuration that meets these requirements?

A) Use the network 172.16.2.0 /24 command in DHCP pool mode

B) Use the network 172.16.2.128 /25 command in DHCP pool mode

C) The ip dhcp excluded-address command(s) must exclude the address of router R2 (and possibly others)

D) Use the ip dhcp excluded-address command does not have to exclude the address of router R2 (but may list others)

Figure 1: The Network for the DHCP Server Question

Get Deeper Background with CCENT EPL

I chose to write this particular question because of the release of CCENT EPL product. We had selected a few of the videos from that product as samples that anyone can view. One of those Common Mistake videos discusses DHCP server config, specifically those that you need to know to answer this question. So, if you need help with this question, check the CCENT EPL product page, and take about 7 minutes to watch video 9.3, “Configuring an IOS DHCP Server”.

Answer Post in a Few Days!

I’ll post an answer post in a few days. Watch for it! It should be the next post in chronological order as well, so watch for the link at the bottom of this page.