Objective 4.6
200-301Configure and verify DHCP client and relay.
Objective 4.6 sits in IP Services, which carries 10% of the CCNA exam. The questions below are original, written from the official objective title above, and each explanation cites the Cisco page it rests on.
Objective title verbatim from the official objectives. Cisco exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
Hosts in VLAN 30 get no address, while other VLANs served by the same server at 172.16.1.2 lease normally.
Switch# show running-config interface vlan 30interface Vlan30 ip address 10.30.0.1 255.255.255.0endWhich command fixes this?
Correct.
Checked against cisco.com, August 2026Concept
A host with no address can only broadcast, and a broadcast dies at the routed boundary. Crossing that boundary takes a Layer 3 device told where to send the request as a unicast, which is the job the relay agent function performs.
Why D
The SVI already has an address, so the subnet is routed and the failure is not reachability. What is missing is a forwarding address on the interface facing the clients, which turns the broadcast into a unicast toward 172.16.1.2 and stamps the relay's own address into the packet so the server can pick the right pool.
Source
Cisco: Configuring DHCP, client and relay agent, checked August 2026If you want the switch to relay DHCP packets, the IP address of the DHCP server must be configured on the switch virtual interface (SVI) of the DHCP client.
Now you: objective 4.6 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 2
A relay forwards requests from one client VLAN to a server holding pools for several subnets.
clients 10.30.0.0/24 -- SW1 (Vlan30 10.30.0.1, relay) -- R1 -- server 172.16.1.2Which field tells the server which pool to draw from?
Sample question 2 of 2
A campus has one DHCP server and many subnets. What removes the need for a server on every segment?
That’s 2 of the full CCNA bank.
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Continue practicingRead the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.
More objectives in IP Services
- 4.1 Configure and verify inside source NAT using static and pools.
- 4.2 Configure and verify NTP operating in a client and server mode.
- 4.3 Explain the role of DHCP and DNS within the network.
- 4.4 Explain the function of SNMP in network operations.
- 4.5 Describe the use of syslog features, including facilities and severity levels.
- 4.7 Explain the forwarding per-hop behavior (PHB) for QoS such as classification, marking, queuing, congestion, policing, and shaping.
- 4.9 Describe the capabilities and functions of TFTP/FTP in the network.