Rumus Vlookup dan Hlookup di Microsoft Excel part1 
Membangun ODN Sederhana FTTX 
Bagaimana Membangun Tower Setinggi ini 
![[solved] ping: socket: Address family not supported by protocol](https://teknonesia.com/wp-content/uploads/2018/01/solved-Error-rpmdb-open-failed-570x380.jpg)
[solved] ping: socket: Address family not supported by protocol
Jumpa error lagi di CentOS, kali ini tidak bisa ping ke alamat IPv4. Aneh, tidak
Month: January 2018
[solved] Error: rpmdb open failed
Kemarin ketemu Error: rpmdb open failed. Hasilnya, tidak bisa update dan install aplikasi baru di server