Playlist · Keith Barker - The OG of IT
Office Hour Tutorials
Total watch time
3h 46m
at 1× speed · exactly 3 hours, 45 minutes, 30 seconds at 1×
At an hour a day you'd finish in 4 days
The shape of the course
Each column is one video, to scale
WatchedTo watch
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About 4 days at an hour a day
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At one hour a day, every day, this playlist takes about 4 days. Turn on JavaScript to plan around your week.
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Videos (11)
3h 46m in total · tick what you've watched
Tick videos you've watched — progress is saved in this browser. Titles open on YouTube in a new tab.
| Watched | Leave out of the total | ||||
|---|---|---|---|---|---|
| 1 | Office Hour: OSPF Fundamentals | Cisco CCNA 200-301 | 29:48 | 2021-04-24 | ||
| 2 | IP Access Control Lists (ACLs) | Cisco CCNA 200-301 | 18:48 | 2021-12-25 | ||
| 3 | Network Topology Architectures (2-tier and 3-tier) | Cisco CCNA 200-301 | 18:59 | 2022-01-01 | ||
| 4 | Cisco Spine-leaf Network Topology | Cisco CCNA 200-301 | 25:59 | 2022-01-08 | ||
| 5 | Syslog | Cisco CCNA 200-301 | 16:55 | 2022-01-15 | ||
| 6 | Next Generation Firewalls (NGFWs) | Cisco CCNA 200-301 | 28:44 | 2022-01-22 | ||
| 7 | Office Hour Cisco NAT, PAT | Network Address Translation | 16:34 | 2022-01-29 | ||
| 8 | Office Hour 3 Options for L3 Routing | Cisco CCNA 200-301 | 18:56 | 2022-02-19 | ||
| 9 | OSPF Feb 2022 Edition | Cisco CCNA 200-301 | 26:42 | 2022-02-26 | ||
| 10 | Spanning Tree (STP) Tutorial | Cisco CCNA 200-301 | 15:22 | 2022-03-05 | ||
| 11 | Layer 2 Etherchannel LAG Cisco to Fortinet's FortiSwitch | Cisco CCNA 200-301 | 8:43 | 2022-03-19 |
No videos match that filter.
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[](https://playlistduration.com/playlist/PLQQoSBmrXmrxMRPBsFMve503hG4A3dEJ2)<a href="https://playlistduration.com/playlist/PLQQoSBmrXmrxMRPBsFMve503hG4A3dEJ2"><img src="https://playlistduration.com/badge/playlist/PLQQoSBmrXmrxMRPBsFMve503hG4A3dEJ2.svg" alt="Watch time: 3h 46m · 11 videos" width="203" height="20"></a>Add ?speed=1.5 to the image URL for the time at that speed, ?label=Course to change the left text, or ?style=flat-square for square corners.
Want the numbers themselves? GET https://playlistduration.com/api/v1/playlist/PLQQoSBmrXmrxMRPBsFMve503hG4A3dEJ2 returns them as JSON — free, no key. API docs →
Data from the YouTube Data API as of 2026-11-06 (cached). Private or deleted videos are excluded from totals.