What does it actually look like to use AI agents for real ops work?
See how agentic workflows can help with personalization, incident management, cost analysis, and reporting, plus catch a demo of Azure SRE Agent in the latest episode of #AzureFriday: https://t.co/9eCVoOGfFU
You’re a FOOL if you’re learning networking and still don’t know these 19 things:
1. IP Address
Tells networks where a device/interface can be reached.
2. MAC Address
Used to identify network interfaces inside a local Layer 2 network.
3. Subnet Mask
Tells you which part of an IP represents the network and which part represents the host.
4. Default Gateway
The router your device sends traffic to when the destination is outside its local network.
5. DNS
Turns names like `https://t.co/i0IQy3qMvz` into IP addresses.
6. DHCP
Automatically gives devices their IP, gateway, DNS, and other network settings.
7. Switch
Connects devices inside a LAN and forwards Ethernet frames using MAC addresses.
8. Router
Connects different networks and forwards packets using IP addresses.
9. ARP
Maps an IPv4 address to a MAC address on the local network.
10. TCP
Connection-oriented and designed for reliable, ordered delivery.
11. UDP
Connectionless with lower overhead, useful when speed and low latency matter more than guaranteed delivery.
12. Ports
Tell the operating system which application should receive traffic.
Common ones:
`22` → SSH
`53` → DNS
`80` → HTTP
`443` → HTTPS
13. Private IPs
Used inside private networks.
Main IPv4 ranges:
`10.0.0.0/8`
`172.16.0.0/12`
`192.168.0.0/16`
14. NAT
Translates addresses between networks, commonly allowing private devices to reach the internet through public IPs.
15. Public subnet ≠ public resource
Being inside a public subnet alone does NOT automatically make a cloud resource publicly reachable.
16. Firewall
Controls which traffic is allowed or denied based on rules such as IP, protocol, and port.
17. ICMP
Used for network diagnostics and control messages.
`ping` commonly uses ICMP.
18. CIDR
Defines network ranges.
`/16` → larger network
`/24` → smaller network
`/32` → one IPv4 address
19. The most important networking skill: follow the packet.
When something breaks, check:
Device
↓
DNS
↓
IP + Subnet
↓
Gateway
↓
Route
↓
Firewall
↓
Destination
Stop memorizing networking as 100 disconnected definitions.
Understand how a packet gets from A → B, and most networking concepts start making sense.
Bookmark this before your next networking session.
Through the partnership between Broadcom and Canonical, Ubuntu is now available natively on VMware Cloud Foundation (VCF) – optimized, validated, and ready to transform your operational experience.
In this webinar, discover how VCF delivers a powerful private cloud infrastructure, while Ubuntu on VCF provides a trusted, reliable operating system for your workloads.
Join us on 20 August 2026.
https://t.co/aRLCYYuZ4Q
#Ubuntu #VCF #VMware