hardMultiple ChoiceObjective-mapped
300-410 Practice Question: The default DHCPv4 server lease time on a Cisco…
What is the default DHCPv4 server lease time on a Cisco IOS-XE router configured as a DHCP server?
⚠ Common exam trap
Cisco often tests the default lease time to catch candidates who confuse common enterprise practices (like 12 hours or 7 days) with the actual IOS default of 1 day.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
86400 seconds (1 day)
The default DHCPv4 lease time on a Cisco IOS-XE router configured as a DHCP server is 86400 seconds (1 day). This is defined in the Cisco IOS DHCP server configuration and is the standard default value used when no lease duration is explicitly specified in the DHCP pool configuration.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
3600 seconds (1 hour)
Why it's wrong here
This is not the default; the default is 86400 seconds.
- ✗
43200 seconds (12 hours)
Why it's wrong here
This is a common configured value but not the IOS default.
- ✓
86400 seconds (1 day)
Why this is correct
The default lease time for Cisco IOS-XE DHCP server is 86400 seconds.
- ✗
604800 seconds (7 days)
Why it's wrong here
This is too long; the default is 86400 seconds.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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