The Frustrating DNS

Why, hello there. Today is an unlucky day for me. I missed the quiz for the second time. Ugggh. Next meeting, I'll make sure I won't be late again. >_<

Today's topic is quite confusing and frustrating. I didn't absorb the topic that much because I was too busy thinking of my "banat" for the quiz. :)) But I was able to take down some of the important notes.

Here are some definition of terms:

• DNS - Domain Name System
• NIS - Network Internet System
• WNIS - Windows Internet System
• SOA - Start Of Authority
• NS -  Name Server
• A - Hostname Adress Map
• PTR - Maps Address to Names
• MX - Mail Exchanger
• NAME - Canonical Name

The topic for today taught me a deeper idea of the Domain Name System. My knowledge in DNS is now deeper because of the hands on experience in setting up and configuring domain and subdomains. Before, I only know that domain names are just string of letters and numbers as substitutes for IP addresses. It's just a shame I wasn't able to configure the domain system in the exercise.

The screenshots below show the relevant files for configuring the domain system.

Figure 1: Source Code for name.conf.local

Figure 2: Source Code for db.cmscwantriseben.com

Figure 3: Source Code for db.192.168.3

Figure 4: Query "named-checkconf named.conf.local" Returns No Error

Figure 5: named-checkzone Query  Returns Weird Notifications

Figure 6: Source Code for resolv.conf

Figure 7: dig mra Query Return Wrong Output

Figure 8: Ping Fail

Today's topic may be hard but I know that UP does not settle for easy things and we should treat every failure a challenge. And we strive hard to make that failure a success. Even if I didn't fully grasp the topic for today, I'm now responsible to help myself learn about the topic on my own. Thank you for the effort, sir. Kahit na gustong gusto mo na kaming ifull spoon feed kanina. :))))

Another banat:

Alam mo tama lang na EX-er ang tawag sa task kanina. Kasi just like almost all of the EX-es, kahit paulit ulit mong isipin at intindihin, minsan, di mo pa rin malaman kung saan ka nagkamali kahit lahat ginawa mo na para maging okay lang ang lahat. :)))))))))))))))))