PAT (Port Address Translation) can support thousands of internal devices using a single public IP address because it modifies both the source IP address and source port number in outbound packets. True or false? Explain your reasoning! 🤔

Router A and Router B are connected via Ethernet. Both routers have OSPF configured in area 0. Router A shows: interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.0 ip ospf hello-interval 20 Router B shows: interface GigabitEthernet0/0 ip address 192.168.1.2 255.255.255.0 ip ospf hello-interval 10 Both interfaces are up/up and OSPF is enabled on the interfaces. **Question:** What will you see when you run `show ip ospf neighbor` on Router A? Drop your answers below! 👇

You have two Cisco switches configured for EtherChannel. On Switch A: interface range gi0/1-2 channel-group 1 mode active channel-protocol lacp On Switch B: interface range gi0/1-2 channel-group 1 mode auto channel-protocol lacp The physical cables are correctly connected between the switches. **Question:** What will you see when you run `show etherchannel summary` on either switch? A) Po1 shows as (SU) with both interfaces bundled B) Po1 shows as (SD) - suspended C) No Po1 appears in the output D) Po1 shows individual interfaces in different states Drop your answer below! 👇

🤔 802.11ac operates exclusively in the 5 GHz frequency band and can achieve theoretical maximum speeds of up to 6.93 Gbps using 8x8 MIMO and 160 MHz channel bonding. True or false? Explain your reasoning!

A big thank you to @Chandra Kanth for his question about IPv4 terminology. He sent the question as a private chat, but I want to make sure everyone got to see the reply. My reply is a little bit long to type all here, so I wrote a tutorial and put it on my blog. You can read the entire reply here https://blog.anythingoverip.com/subnetting-vocabulary-decoded-understanding-the-language-of-ip-addressing/ Once you have read the post, jump back here to answer this question. ## Practice Challenge Given: `10.20.30.40/28` - What's the subnet mask in dotted decimal? - What's the network address? - What's the broadcast address? - How many usable host addresses? - Is `10.20.30.60` in the same subnet? Post your answers in the comments - no judgment, we're all learning! P.S - here is a playlist of some videos I made on YouTube MANY MANY years ago, but they are still 100% accurate with IPv4 address - https://www.youtube.com/playlist?list=PLx49hr6omlDuDCBxwMS-wA3AQM7tHUcPa