How do you check the Cisco IOS version and device uptime on a router or switch? Learn why the “show version” command is essential for viewing system software, uptime, and hardware details—key for Cisco Certified Field Technician (CCT) exam success.
Table of Contents
Question
A technician wants to verify the Cisco IOS version and device uptime. What command should they use?
A. show version
B. show ip interface brief
C. show running-config
D. show hardware
E. show interfaces
Answer
A. show version
Explanation
This command provides details on the IOS version, device model, and uptime.
The command to verify both the Cisco IOS version and the device uptime is show version.
The show version command displays comprehensive information about the device, including:
- The exact Cisco IOS software version and release number running on the device.
- The device’s uptime, showing how long it has been running since the last reboot.
- Hardware details such as model, processor type, memory, and serial numbers.
- The reason for the last reload and the configuration register value.
The output includes a line similar to:
Router uptime is 1 week, 2 days, 3 hours, 15 minutes
and another line specifying the IOS version, such as:
Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 15.0(2)SE4, RELEASE SOFTWARE (fc1)
This command is widely used for troubleshooting, inventory, and system health monitoring.
show version provides both the IOS version and the device uptime in a single output, making it the standard command for this purpose on Cisco devices.
Cisco Certified Field Technician (CCT) certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Field Technician (CCT) exam and earn Cisco Certified Field Technician (CCT) certification.